/**
 * 램수면 계산기 - 메인 스타일시트
 * 우주 테마 + antigravity 효과
 * 다크모드 기본, 라이트모드 전환 가능
 * 모바일 퍼스트 반응형 디자인
 */

/* ============================================
   CSS Variables - 우주 테마 (기본)
   ============================================ */
:root {
    /* Primary Colors - 우주/신비 테마 */
    --color-primary: #7B68EE;
    --color-primary-dark: #483D8B;
    --color-primary-light: #9D8DF7;
    --color-accent: #B8A9FF;
    --color-accent-light: #D4CCFF;
    --color-highlight: #FFE66D;
    --color-highlight-dark: #e6cf5a;

    /* 우주 배경 색상 */
    --color-white: #FFFFFF;
    --color-bg: #0a0a1a;
    --color-bg-secondary: #0f0f2a;
    --color-bg-card: rgba(15, 15, 45, 0.85);
    --color-bg-elevated: rgba(25, 25, 60, 0.9);
    --color-text: #E8EDF5;
    --color-text-light: #B8C5D6;
    --color-text-muted: #8896A8;
    --color-border: rgba(123, 104, 238, 0.3);
    --color-border-light: rgba(123, 104, 238, 0.15);

    /* 우주 그라디언트 색상 */
    --space-gradient-1: #0a0a1a;
    --space-gradient-2: #1a1040;
    --space-gradient-3: #2d1b69;
    --nebula-pink: rgba(255, 119, 168, 0.15);
    --nebula-blue: rgba(100, 149, 237, 0.15);
    --nebula-purple: rgba(147, 112, 219, 0.2);
    --star-color: #ffffff;
    --star-glow: rgba(255, 255, 255, 0.8);

    /* Status Colors */
    --color-success: #48BB78;
    --color-warning: #ECC94B;
    --color-error: #FC8181;
    --color-info: #63B3ED;

    /* Typography */
    --font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;

    /* Shadows - 우주 테마용 글로우 */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5), 0 0 15px rgba(123, 104, 238, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.6), 0 0 30px rgba(123, 104, 238, 0.15);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6), 0 0 40px rgba(123, 104, 238, 0.2);
    --shadow-glow: 0 0 25px rgba(123, 104, 238, 0.4), 0 0 50px rgba(147, 112, 219, 0.2);
    --shadow-cosmic: 0 0 60px rgba(123, 104, 238, 0.3), 0 0 100px rgba(100, 149, 237, 0.15);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
    --transition-theme: 400ms ease;

    /* Layout */
    --header-height: 60px;
    --bottom-nav-height: 64px;
    --container-max: 1200px;
    --container-sm: 640px;
}

/* ============================================
   라이트모드
   ============================================ */
body.light-mode {
    --color-primary: #223060;
    --color-primary-dark: #0D1B2A;
    --color-primary-light: #2d4080;
    --color-accent: #A2A8D3;
    --color-accent-light: #c5c9e8;

    --color-bg: #f5f7fa;
    --color-bg-secondary: #ffffff;
    --color-bg-card: #FFFFFF;
    --color-bg-elevated: #ffffff;
    --color-text: #1a1a2e;
    --color-text-light: #6b7280;
    --color-text-muted: #9ca3af;
    --color-border: #e5e7eb;
    --color-border-light: #f3f4f6;

    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    --color-info: #3b82f6;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 20px rgba(34, 48, 96, 0.1);
}

/* ============================================
   Reset & Base
   ============================================ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
    color-scheme: dark;
}

html.light-mode {
    color-scheme: light;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text);
    background: linear-gradient(180deg,
        var(--space-gradient-1) 0%,
        var(--space-gradient-2) 50%,
        var(--space-gradient-3) 100%);
    background-attachment: fixed;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background var(--transition-theme), color var(--transition-theme);
    position: relative;
    overflow-x: hidden;
}

/* 우주 배경 - 별들 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        radial-gradient(2px 2px at 20px 30px, var(--star-color), transparent),
        radial-gradient(2px 2px at 40px 70px, var(--star-glow), transparent),
        radial-gradient(1px 1px at 90px 40px, var(--star-color), transparent),
        radial-gradient(2px 2px at 130px 80px, var(--star-glow), transparent),
        radial-gradient(1px 1px at 160px 120px, var(--star-color), transparent),
        radial-gradient(1.5px 1.5px at 200px 50px, var(--star-color), transparent),
        radial-gradient(2px 2px at 250px 160px, var(--star-glow), transparent),
        radial-gradient(1px 1px at 300px 30px, var(--star-color), transparent),
        radial-gradient(1.5px 1.5px at 350px 100px, var(--star-color), transparent),
        radial-gradient(2px 2px at 400px 200px, var(--star-glow), transparent),
        radial-gradient(1px 1px at 450px 60px, var(--star-color), transparent),
        radial-gradient(1.5px 1.5px at 500px 150px, var(--star-color), transparent),
        radial-gradient(2px 2px at 550px 90px, var(--star-glow), transparent),
        radial-gradient(1px 1px at 600px 180px, var(--star-color), transparent),
        radial-gradient(1.5px 1.5px at 650px 40px, var(--star-color), transparent),
        radial-gradient(2px 2px at 700px 130px, var(--star-glow), transparent),
        radial-gradient(1px 1px at 750px 70px, var(--star-color), transparent),
        radial-gradient(1.5px 1.5px at 800px 190px, var(--star-color), transparent);
    background-repeat: repeat;
    background-size: 800px 200px;
    animation: twinkle 8s ease-in-out infinite alternate, starDrift 60s linear infinite;
    pointer-events: none;
    z-index: 0;
    opacity: 0.9;
}

/* 성운 효과 */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(ellipse 600px 400px at 20% 30%, var(--nebula-purple), transparent),
        radial-gradient(ellipse 500px 300px at 80% 70%, var(--nebula-blue), transparent),
        radial-gradient(ellipse 400px 250px at 60% 20%, var(--nebula-pink), transparent);
    pointer-events: none;
    z-index: 0;
    animation: nebulaFloat 30s ease-in-out infinite alternate;
}

/* 별 반짝임 애니메이션 */
@keyframes twinkle {
    0%, 100% { opacity: 0.7; }
    50% { opacity: 1; }
}

/* 별 이동 애니메이션 */
@keyframes starDrift {
    from { background-position: 0 0; }
    to { background-position: 800px 200px; }
}

/* 성운 부유 애니메이션 */
@keyframes nebulaFloat {
    0% {
        opacity: 0.6;
        transform: scale(1) translateY(0);
    }
    50% {
        opacity: 0.8;
        transform: scale(1.05) translateY(-20px);
    }
    100% {
        opacity: 0.6;
        transform: scale(1) translateY(0);
    }
}

body.rem-app {
    padding-top: var(--header-height);
    padding-bottom: calc(var(--bottom-nav-height) + env(safe-area-inset-bottom));
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

body.light-mode a {
    color: var(--color-primary);
}

a:hover {
    color: var(--color-primary-light);
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input, textarea, select {
    font-family: inherit;
    font-size: var(--font-size-base);
}

/* Skip Link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-sm) var(--spacing-md);
    z-index: 1000;
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: 0;
}

/* ============================================
   Theme Toggle Button
   ============================================ */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    cursor: pointer;
    transition: all var(--transition-base);
    font-size: var(--font-size-lg);
}

.theme-toggle:hover {
    background: var(--color-border);
    transform: scale(1.05);
}

.theme-toggle .icon-sun,
.theme-toggle .icon-moon {
    transition: opacity var(--transition-base), transform var(--transition-base);
}

/* 다크모드일 때: 해 아이콘 표시 (라이트모드로 전환) */
.theme-toggle .icon-sun {
    display: block;
}
.theme-toggle .icon-moon {
    display: none;
}

/* 라이트모드일 때: 달 아이콘 표시 (다크모드로 전환) */
body.light-mode .theme-toggle .icon-sun {
    display: none;
}
body.light-mode .theme-toggle .icon-moon {
    display: block;
}

/* ============================================
   Header
   ============================================ */
.app-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(10, 10, 30, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: var(--shadow-md), 0 1px 0 rgba(123, 104, 238, 0.2);
    z-index: 100;
    transition: background var(--transition-theme);
    border-bottom: 1px solid rgba(123, 104, 238, 0.3);
}

.header-inner {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 700;
    font-size: var(--font-size-lg);
    color: var(--color-primary-light);
}

body.light-mode .logo {
    color: var(--color-primary);
}

.logo-icon {
    font-size: var(--font-size-2xl);
}

.logo-text {
    display: none;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    padding: var(--spacing-sm);
}

.hamburger {
    position: relative;
    width: 20px;
    height: 2px;
    background: var(--color-text);
    transition: var(--transition-fast);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--color-text);
    transition: var(--transition-fast);
}

.hamburger::before {
    top: -6px;
}

.hamburger::after {
    bottom: -6px;
}

.mobile-menu-btn[aria-expanded="true"] .hamburger {
    background: transparent;
}

.mobile-menu-btn[aria-expanded="true"] .hamburger::before {
    top: 0;
    transform: rotate(45deg);
}

.mobile-menu-btn[aria-expanded="true"] .hamburger::after {
    bottom: 0;
    transform: rotate(-45deg);
}

/* Navigation */
.main-nav {
    display: none;
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-bg-card);
    padding: var(--spacing-lg);
    overflow-y: auto;
    z-index: 99;
    transition: background-color var(--transition-theme);
}

.main-nav.active {
    display: block;
}

.nav-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.nav-list a {
    display: block;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    font-weight: 500;
    color: var(--color-text);
    transition: all var(--transition-fast);
}

.nav-list a:hover,
.nav-list a.active {
    background: var(--color-bg-elevated);
    color: var(--color-primary-light);
}

body.light-mode .nav-list a:hover,
body.light-mode .nav-list a.active {
    background: var(--color-bg);
    color: var(--color-primary);
}

.btn-register {
    background: var(--color-primary) !important;
    color: var(--color-white) !important;
    text-align: center;
}

.btn-register:hover {
    background: var(--color-primary-light) !important;
}

.mobile-nav-overlay {
    display: none;
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    z-index: 98;
}

.mobile-nav-overlay.active {
    display: block;
}

/* ============================================
   Main Content
   ============================================ */
.main-content {
    min-height: calc(100vh - var(--header-height) - var(--bottom-nav-height));
    background: transparent;
    transition: background var(--transition-theme);
    position: relative;
    z-index: 1;
}

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-md);
}

.container-sm {
    max-width: var(--container-sm);
}

/* ============================================
   Calculator Section
   ============================================ */
.calc-hero {
    background: linear-gradient(180deg,
        rgba(45, 27, 105, 0.6) 0%,
        rgba(75, 50, 150, 0.4) 50%,
        rgba(123, 104, 238, 0.2) 100%);
    padding: var(--spacing-2xl) var(--spacing-md);
    text-align: center;
    color: var(--color-text);
    border-bottom: 1px solid rgba(123, 104, 238, 0.3);
    position: relative;
    overflow: hidden;
}

/* 히어로 영역 달 효과 */
.calc-hero::before {
    content: '';
    position: absolute;
    top: -50px;
    right: -50px;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle,
        rgba(255, 255, 200, 0.15) 0%,
        rgba(255, 255, 200, 0.05) 40%,
        transparent 70%);
    border-radius: 50%;
    animation: moonGlow 6s ease-in-out infinite alternate;
}

@keyframes moonGlow {
    0%, 100% { opacity: 0.5; transform: scale(1); }
    50% { opacity: 0.8; transform: scale(1.1); }
}

body.light-mode .calc-hero {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
    color: var(--color-white);
}

.calc-hero h1 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-sm);
    color: var(--color-accent-light);
    text-shadow: 0 0 30px rgba(123, 104, 238, 0.5), 0 0 60px rgba(184, 169, 255, 0.3);
    animation: floatText 4s ease-in-out infinite;
}

@keyframes floatText {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

body.light-mode .calc-hero h1 {
    color: var(--color-white);
    text-shadow: none;
}

.calc-hero p {
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
}

body.light-mode .calc-hero p {
    color: var(--color-accent-light);
}

.calc-container {
    max-width: var(--container-sm);
    margin: calc(var(--spacing-xl) * -1) auto 0;
    padding: 0 var(--spacing-md) var(--spacing-xl);
    position: relative;
    z-index: 1;
}

.calc-card {
    background: rgba(15, 15, 45, 0.75);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg), inset 0 1px 0 rgba(255, 255, 255, 0.05);
    padding: var(--spacing-lg);
    border: 1px solid rgba(123, 104, 238, 0.25);
    transition: all var(--transition-theme);
    position: relative;
    overflow: hidden;
}

.calc-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(184, 169, 255, 0.5), transparent);
}

.calc-card:hover {
    border-color: rgba(123, 104, 238, 0.4);
    box-shadow: var(--shadow-cosmic);
}

/* Form Styles */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.form-label-icon {
    margin-right: var(--spacing-xs);
}

.form-input {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    transition: border-color var(--transition-fast), background-color var(--transition-theme);
    background-color: var(--color-bg-elevated);
    color: var(--color-text);
    color-scheme: dark;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
}

body.light-mode .form-input {
    background-color: var(--color-white);
    color-scheme: light;
}

/* Input autofill 스타일 */
.form-input:-webkit-autofill,
.form-input:-webkit-autofill:hover,
.form-input:-webkit-autofill:focus {
    -webkit-box-shadow: 0 0 0 1000px var(--color-bg-elevated) inset;
    -webkit-text-fill-color: var(--color-text);
    border-color: var(--color-primary);
}

body.light-mode .form-input:-webkit-autofill,
body.light-mode .form-input:-webkit-autofill:hover,
body.light-mode .form-input:-webkit-autofill:focus {
    -webkit-box-shadow: 0 0 0 1000px var(--color-white) inset;
    -webkit-text-fill-color: var(--color-text);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow);
}

/* Time Input 스타일 */
.form-input[type="time"] {
    -webkit-appearance: none;
    background-color: var(--color-bg-elevated);
    color: var(--color-text);
}

.form-input[type="time"]::-webkit-calendar-picker-indicator {
    filter: invert(0.8);
    cursor: pointer;
}

body.light-mode .form-input[type="time"]::-webkit-calendar-picker-indicator {
    filter: none;
}

/* Select 스타일 */
select.form-input {
    background-color: var(--color-bg-elevated);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23A0AEC0' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
    cursor: pointer;
}

body.light-mode select.form-input {
    background-color: var(--color-white);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236b7280' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
}

select.form-input option {
    background-color: var(--color-bg-elevated);
    color: var(--color-text);
}

body.light-mode select.form-input option {
    background-color: var(--color-white);
    color: var(--color-text);
}

/* Time Input Group */
.time-input-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

/* Slider Styles */
.slider-container {
    padding: var(--spacing-sm) 0;
}

.slider-labels {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
}

.slider {
    -webkit-appearance: none;
    width: 100%;
    height: 8px;
    border-radius: var(--radius-full);
    background: var(--color-border);
    outline: none;
}

.slider::-webkit-slider-runnable-track {
    background: var(--color-border);
    border-radius: var(--radius-full);
    height: 8px;
}

.slider::-moz-range-track {
    background: var(--color-border);
    border-radius: var(--radius-full);
    height: 8px;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
    cursor: pointer;
    box-shadow: 0 0 15px rgba(123, 104, 238, 0.6), 0 0 30px rgba(184, 169, 255, 0.3);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.slider::-moz-range-thumb {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
    cursor: pointer;
    box-shadow: 0 0 15px rgba(123, 104, 238, 0.6), 0 0 30px rgba(184, 169, 255, 0.3);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.slider::-webkit-slider-thumb:hover {
    transform: scale(1.15);
    box-shadow: 0 0 20px rgba(123, 104, 238, 0.8), 0 0 40px rgba(184, 169, 255, 0.5);
}

.slider-value {
    text-align: center;
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-primary-light);
    margin-top: var(--spacing-sm);
}

body.light-mode .slider-value {
    color: var(--color-primary);
}

/* Checkbox Styles */
.checkbox-group {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.checkbox-item {
    flex: 1;
    min-width: 140px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    background: var(--color-bg-elevated);
}

body.light-mode .checkbox-label {
    background: var(--color-white);
}

.checkbox-label:hover {
    border-color: var(--color-accent);
}

.checkbox-input {
    display: none;
}

.checkbox-input:checked + .checkbox-label {
    border-color: var(--color-primary);
    background: var(--color-bg-secondary);
}

body.light-mode .checkbox-input:checked + .checkbox-label {
    background: var(--color-bg);
}

.checkbox-icon {
    font-size: var(--font-size-xl);
}

/* ============================================
   Radio Button Styles - 우주 테마
   ============================================ */
.radio-group {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.radio-group.vertical {
    flex-direction: column;
}

.radio-group.horizontal {
    flex-direction: row;
}

.radio-item {
    flex: 1;
    min-width: 140px;
    position: relative;
}

.radio-input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
    pointer-events: none;
}

.radio-label,
.radio-box {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    background: rgba(15, 15, 45, 0.6);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    font-size: var(--font-size-base);
    font-weight: 500;
    text-align: center;
    position: relative;
    overflow: hidden;
    min-height: 60px;
}

.radio-label::before,
.radio-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s ease;
}

.radio-label:hover::before,
.radio-box:hover::before {
    left: 100%;
}

body.light-mode .radio-label,
body.light-mode .radio-box {
    background: rgba(255, 255, 255, 0.9);
    border-color: var(--color-border);
}

.radio-label:hover,
.radio-box:hover {
    border-color: var(--color-accent);
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(123, 104, 238, 0.2);
}

body.light-mode .radio-label:hover,
body.light-mode .radio-box:hover {
    border-color: var(--color-primary);
    box-shadow: 0 5px 20px rgba(34, 48, 96, 0.1);
}

/* Radio 선택 상태 */
.radio-input:checked + .radio-label,
.radio-input:checked + .radio-box {
    border-color: var(--color-primary);
    background: linear-gradient(135deg, rgba(123, 104, 238, 0.3), rgba(147, 112, 219, 0.2));
    box-shadow: 0 0 20px rgba(123, 104, 238, 0.4), inset 0 0 30px rgba(123, 104, 238, 0.1);
    color: var(--color-white);
}

.radio-input:checked + .radio-label::after,
.radio-input:checked + .radio-box::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent), var(--color-primary));
    animation: shimmer 2s linear infinite;
}

@keyframes shimmer {
    0% { background-position: -200% center; }
    100% { background-position: 200% center; }
}

body.light-mode .radio-input:checked + .radio-label,
body.light-mode .radio-input:checked + .radio-box {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    border-color: var(--color-primary);
    color: white;
}

.radio-input:focus + .radio-label,
.radio-input:focus + .radio-box {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

.radio-icon {
    font-size: 1.5rem;
    line-height: 1;
}

.radio-text {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
}

.radio-text .main-text {
    font-weight: 600;
}

.radio-text .sub-text {
    font-size: var(--font-size-xs);
    opacity: 0.7;
}

/* Radio 카드형 스타일 */
.radio-card-group {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
}

.radio-card {
    position: relative;
}

.radio-card .radio-input {
    position: absolute;
    opacity: 0;
}

.radio-card .radio-label {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    min-height: 100px;
    border-radius: var(--radius-xl);
    background: rgba(15, 15, 45, 0.7);
    border: 2px solid var(--color-border);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.radio-card .radio-label:hover {
    transform: translateY(-5px) scale(1.02);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow);
}

.radio-card .radio-input:checked + .radio-label {
    background: linear-gradient(135deg, rgba(123, 104, 238, 0.4), rgba(147, 112, 219, 0.3));
    border-color: var(--color-primary);
    box-shadow: var(--shadow-cosmic);
    transform: translateY(-3px);
}

.radio-card .radio-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.radio-card .radio-text {
    font-weight: 500;
    text-align: center;
}

body.light-mode .radio-card .radio-label {
    background: white;
}

body.light-mode .radio-card .radio-input:checked + .radio-label {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: white;
}

/* 원형 인디케이터가 있는 라디오 */
.radio-indicator-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.radio-indicator-item {
    position: relative;
}

.radio-indicator-item .radio-label {
    display: flex;
    align-items: center;
    padding: var(--spacing-md);
    padding-left: calc(var(--spacing-md) + 30px);
    border-radius: var(--radius-md);
    background: rgba(15, 15, 45, 0.5);
    border: 1px solid var(--color-border);
    justify-content: flex-start;
    min-height: auto;
}

.radio-indicator-item .radio-label::before {
    content: '';
    position: absolute;
    left: var(--spacing-md);
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-border);
    border-radius: 50%;
    background: transparent;
    transition: all var(--transition-base);
}

.radio-indicator-item .radio-input:checked + .radio-label::before {
    border-color: var(--color-primary);
    background: var(--color-primary);
    box-shadow: inset 0 0 0 4px rgba(15, 15, 45, 0.8), 0 0 10px var(--color-primary);
}

body.light-mode .radio-indicator-item .radio-label {
    background: white;
}

body.light-mode .radio-indicator-item .radio-input:checked + .radio-label::before {
    box-shadow: inset 0 0 0 4px white, 0 0 10px var(--color-primary);
}

/* 토글 스위치형 라디오 (2개 옵션용) */
.radio-toggle-group {
    display: flex;
    background: rgba(15, 15, 45, 0.6);
    border-radius: var(--radius-full);
    padding: 4px;
    border: 1px solid var(--color-border);
    position: relative;
    overflow: hidden;
}

.radio-toggle-item {
    flex: 1;
    position: relative;
    z-index: 1;
}

.radio-toggle-item .radio-input {
    position: absolute;
    opacity: 0;
}

.radio-toggle-item .radio-label {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-full);
    background: transparent;
    border: none;
    min-height: auto;
    transition: all var(--transition-base);
}

.radio-toggle-item .radio-label:hover {
    transform: none;
    box-shadow: none;
}

.radio-toggle-item .radio-input:checked + .radio-label {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    color: white;
    box-shadow: 0 2px 10px rgba(123, 104, 238, 0.4);
}

.radio-toggle-item .radio-input:checked + .radio-label::after {
    display: none;
}

body.light-mode .radio-toggle-group {
    background: #e5e7eb;
}

body.light-mode .radio-toggle-item .radio-input:checked + .radio-label {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
}

/* 별점/등급형 라디오 */
.radio-rating-group {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.radio-rating-item {
    position: relative;
}

.radio-rating-item .radio-input {
    position: absolute;
    opacity: 0;
}

.radio-rating-item .radio-label {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    border-radius: var(--radius-lg);
    background: rgba(15, 15, 45, 0.6);
    border: 2px solid var(--color-border);
    font-size: var(--font-size-lg);
    font-weight: 700;
    min-height: auto;
    padding: 0;
}

.radio-rating-item .radio-label:hover {
    border-color: var(--color-primary);
    transform: scale(1.1);
}

.radio-rating-item .radio-input:checked + .radio-label {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    border-color: transparent;
    color: white;
    transform: scale(1.05);
    box-shadow: 0 0 20px rgba(123, 104, 238, 0.5);
}

.radio-rating-item .radio-input:checked + .radio-label::after {
    display: none;
}

body.light-mode .radio-rating-item .radio-label {
    background: white;
}

/* Info Section */
.info-section {
    display: grid;
    gap: var(--spacing-lg);
}

.info-section-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-lg);
    color: var(--color-primary-light);
}

body.light-mode .info-section-title {
    color: var(--color-primary);
}

.info-item h3 {
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.info-item p,
.info-item ul {
    color: var(--color-text-light);
    line-height: 1.8;
}

.info-item ul {
    padding-left: var(--spacing-lg);
}

.info-item li {
    margin-bottom: var(--spacing-xs);
}

/* Submit Button - 우주 테마 */
.btn-submit {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    background: linear-gradient(135deg,
        var(--color-primary) 0%,
        var(--color-primary-light) 50%,
        var(--color-accent) 100%);
    background-size: 200% 200%;
    color: var(--color-white);
    font-size: var(--font-size-lg);
    font-weight: 700;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md), var(--shadow-glow);
    transition: all var(--transition-base);
    animation: shimmerBtn 3s ease-in-out infinite;
    position: relative;
    overflow: hidden;
}

@keyframes shimmerBtn {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.btn-submit::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        45deg,
        transparent,
        rgba(255, 255, 255, 0.1),
        transparent
    );
    transform: rotate(45deg);
    animation: buttonShine 4s ease-in-out infinite;
}

@keyframes buttonShine {
    0%, 100% { transform: rotate(45deg) translateX(-100%); }
    50% { transform: rotate(45deg) translateX(100%); }
}

.btn-submit:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-cosmic);
}

.btn-submit:active {
    transform: translateY(0);
}

.btn-submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    animation: none;
}

/* ============================================
   Result Section
   ============================================ */
.result-section {
    display: none;
    margin-top: var(--spacing-xl);
    animation: fadeInUp 0.5s ease;
}

.result-section.active {
    display: block;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.result-card {
    background: linear-gradient(135deg,
        rgba(45, 27, 105, 0.8) 0%,
        rgba(75, 50, 150, 0.6) 50%,
        rgba(123, 104, 238, 0.4) 100%);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    color: var(--color-text);
    text-align: center;
    border: 1px solid rgba(184, 169, 255, 0.3);
    box-shadow: var(--shadow-cosmic);
    position: relative;
    overflow: hidden;
    animation: resultGlow 3s ease-in-out infinite alternate;
}

@keyframes resultGlow {
    0% { box-shadow: var(--shadow-lg), 0 0 30px rgba(123, 104, 238, 0.2); }
    100% { box-shadow: var(--shadow-cosmic), 0 0 50px rgba(184, 169, 255, 0.3); }
}

.result-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg,
        transparent,
        rgba(255, 230, 109, 0.8),
        rgba(184, 169, 255, 0.8),
        transparent);
    animation: resultTopGlow 2s ease-in-out infinite;
}

@keyframes resultTopGlow {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

body.light-mode .result-card {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
    color: var(--color-white);
    border: none;
}

.result-header {
    margin-bottom: var(--spacing-lg);
}

.result-title {
    font-size: var(--font-size-lg);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
}

body.light-mode .result-title {
    color: var(--color-accent-light);
}

.result-score {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.result-score .stars {
    color: var(--color-highlight);
}

.result-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.stat-item {
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    border: 1px solid var(--color-border);
}

body.light-mode .stat-item {
    background: rgba(255, 255, 255, 0.1);
    border: none;
}

.stat-value {
    font-size: var(--font-size-2xl);
    font-weight: 700;
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
}

body.light-mode .stat-label {
    color: var(--color-accent-light);
}

.result-message {
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: left;
    border: 1px solid var(--color-border);
}

body.light-mode .result-message {
    background: rgba(255, 255, 255, 0.1);
    border: none;
}

.result-message h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.result-message p {
    font-size: var(--font-size-sm);
    line-height: 1.8;
    white-space: pre-line;
}

/* Share Buttons */
.share-buttons {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
    justify-content: center;
    flex-wrap: wrap;
}

.btn-share {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: all var(--transition-fast);
}

.btn-share-copy {
    background: var(--color-bg-card);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

body.light-mode .btn-share-copy {
    background: var(--color-white);
    color: var(--color-primary);
}

.btn-share-kakao {
    background: #FEE500;
    color: #3C1E1E;
}

/* ============================================
   Auth Pages
   ============================================ */
.auth-container {
    min-height: calc(100vh - var(--header-height) - var(--bottom-nav-height));
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg) var(--spacing-md);
}

.auth-card {
    width: 100%;
    max-width: 400px;
    background: var(--color-bg-card);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-xl);
    border: 1px solid var(--color-border);
    transition: background-color var(--transition-theme), border-color var(--transition-theme);
}

.auth-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.auth-logo {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-sm);
}

.auth-title {
    font-size: var(--font-size-xl);
    color: var(--color-text);
}

.auth-subtitle {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    margin-top: var(--spacing-xs);
}

.auth-form .form-input {
    margin-bottom: var(--spacing-md);
}

.auth-links {
    display: flex;
    justify-content: space-between;
    margin-top: var(--spacing-md);
    font-size: var(--font-size-sm);
}

.auth-footer-text {
    text-align: center;
    margin-top: var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
}

.auth-footer-text a {
    color: var(--color-primary-light);
}

body.light-mode .auth-footer-text a {
    color: var(--color-primary);
}

.auth-divider {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--color-border);
}

/* Remember Me Checkbox */
.remember-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    cursor: pointer;
}

.remember-checkbox {
    width: 18px;
    height: 18px;
    accent-color: var(--color-primary);
    cursor: pointer;
}

.remember-text {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
}

/* Agreement Checkboxes */
.agreement-group {
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-sm);
}

.agreement-label {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    cursor: pointer;
    color: var(--color-text);
}

.agreement-checkbox {
    width: 18px;
    height: 18px;
    margin-top: 2px;
    accent-color: var(--color-primary);
    cursor: pointer;
    flex-shrink: 0;
}

.agreement-label a {
    color: var(--color-primary-light);
}

body.light-mode .agreement-label a {
    color: var(--color-primary);
}

/* 회원가입 버튼 (아웃라인 스타일) */
.btn-register-outline {
    display: block;
    text-align: center;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--color-bg-elevated);
    color: var(--color-text);
    font-size: var(--font-size-lg);
    font-weight: 700;
    border-radius: var(--radius-lg);
    border: 2px solid var(--color-border);
    transition: all var(--transition-base);
}

body.light-mode .btn-register-outline {
    background: var(--color-bg);
}

.btn-register-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.error-message {
    background: rgba(252, 129, 129, 0.1);
    color: var(--color-error);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-sm);
    border: 1px solid var(--color-error);
}

body.light-mode .error-message {
    background: #fef2f2;
}

.success-message {
    background: rgba(72, 187, 120, 0.1);
    color: var(--color-success);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-sm);
    border: 1px solid var(--color-success);
}

body.light-mode .success-message {
    background: #f0fdf4;
}

/* ============================================
   My Page
   ============================================ */
.mypage-header {
    background: linear-gradient(135deg, var(--color-bg-secondary) 0%, var(--color-bg-elevated) 100%);
    padding: var(--spacing-2xl) var(--spacing-md);
    text-align: center;
    color: var(--color-text);
    border-bottom: 1px solid var(--color-border);
}

body.light-mode .mypage-header {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
    color: var(--color-white);
}

.mypage-avatar {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-3xl);
    margin: 0 auto var(--spacing-md);
    border: 2px solid var(--color-border);
}

body.light-mode .mypage-avatar {
    background: rgba(255, 255, 255, 0.2);
    border: none;
}

.mypage-name {
    font-size: var(--font-size-xl);
    font-weight: 700;
}

.mypage-email {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    margin-top: var(--spacing-xs);
}

body.light-mode .mypage-email {
    color: var(--color-accent-light);
}

.mypage-content {
    max-width: var(--container-sm);
    margin: calc(var(--spacing-xl) * -1) auto 0;
    padding: 0 var(--spacing-md) var(--spacing-xl);
    position: relative;
    z-index: 1;
}

.mypage-card {
    background: var(--color-bg-card);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    border: 1px solid var(--color-border);
    transition: background-color var(--transition-theme);
}

.mypage-section {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border-light);
}

.mypage-section:last-child {
    border-bottom: none;
}

.mypage-section-title {
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--spacing-md);
}

.mypage-info-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
}

.mypage-info-label {
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
}

.mypage-info-value {
    font-weight: 500;
}

.btn-logout {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--color-bg-elevated);
    color: var(--color-text);
    border-radius: var(--radius-md);
    font-weight: 500;
    transition: all var(--transition-fast);
    border: 1px solid var(--color-border);
}

body.light-mode .btn-logout {
    background: var(--color-bg);
}

.btn-logout:hover {
    background: var(--color-border);
}

.withdrawal-link {
    display: block;
    text-align: right;
    margin-top: var(--spacing-lg);
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    opacity: 0.6;
}

.withdrawal-link:hover {
    opacity: 1;
}

/* ============================================
   History Page
   ============================================ */
.history-header {
    background: linear-gradient(135deg, var(--color-bg-secondary) 0%, var(--color-bg-elevated) 100%);
    padding: var(--spacing-xl) var(--spacing-md);
    color: var(--color-text);
    border-bottom: 1px solid var(--color-border);
}

body.light-mode .history-header {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
    color: var(--color-white);
}

.history-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-xs);
}

.history-subtitle {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
}

body.light-mode .history-subtitle {
    color: var(--color-accent-light);
}

.history-list {
    max-width: var(--container-sm);
    margin: 0 auto;
    padding: var(--spacing-md);
}

.history-item {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    transition: background-color var(--transition-theme);
}

.history-date {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
}

.history-stats {
    display: flex;
    gap: var(--spacing-lg);
}

.history-stat {
    text-align: center;
}

.history-stat-value {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-primary-light);
}

body.light-mode .history-stat-value {
    color: var(--color-primary);
}

.history-stat-label {
    font-size: var(--font-size-xs);
    color: var(--color-text-light);
}

.empty-history {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--color-text-light);
}

.empty-history-icon {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-md);
}

/* ============================================
   Policy Pages
   ============================================ */
.policy-container {
    max-width: var(--container-sm);
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-md);
}

.policy-header {
    margin-bottom: var(--spacing-xl);
}

.policy-title {
    font-size: var(--font-size-2xl);
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.policy-date {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
}

.policy-content {
    background: var(--color-bg-card);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    transition: background-color var(--transition-theme);
}

.policy-content h2 {
    font-size: var(--font-size-lg);
    color: var(--color-primary-light);
    margin: var(--spacing-xl) 0 var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border-light);
}

body.light-mode .policy-content h2 {
    color: var(--color-primary);
}

.policy-content h2:first-child {
    margin-top: 0;
    padding-top: 0;
    border-top: none;
}

.policy-content p {
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
    line-height: 1.8;
}

.policy-content ul {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
}

.policy-content li {
    margin-bottom: var(--spacing-sm);
    line-height: 1.8;
}

/* ============================================
   Sitemap Page
   ============================================ */
.sitemap-container {
    max-width: var(--container-sm);
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-md);
}

.sitemap-header {
    margin-bottom: var(--spacing-xl);
}

.sitemap-title {
    font-size: var(--font-size-2xl);
    color: var(--color-text);
}

.sitemap-grid {
    display: grid;
    gap: var(--spacing-lg);
}

.sitemap-section {
    background: var(--color-bg-card);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    transition: background-color var(--transition-theme);
}

.sitemap-section-title {
    font-size: var(--font-size-lg);
    color: var(--color-primary-light);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

body.light-mode .sitemap-section-title {
    color: var(--color-primary);
}

.sitemap-list {
    list-style: none;
}

.sitemap-list li {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-border-light);
}

.sitemap-list li:last-child {
    border-bottom: none;
}

.sitemap-list a {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-text);
    transition: all var(--transition-fast);
}

.sitemap-list a:hover {
    color: var(--color-primary-light);
    padding-left: var(--spacing-sm);
}

body.light-mode .sitemap-list a:hover {
    color: var(--color-primary);
}

/* ============================================
   Footer
   ============================================ */
.app-footer {
    background: linear-gradient(180deg,
        transparent 0%,
        rgba(10, 10, 30, 0.8) 20%,
        rgba(10, 10, 30, 0.95) 100%);
    color: var(--color-text);
    padding: var(--spacing-2xl) var(--spacing-md) calc(var(--spacing-2xl) + var(--bottom-nav-height));
    border-top: 1px solid rgba(123, 104, 238, 0.2);
    transition: background var(--transition-theme);
    position: relative;
    z-index: 1;
}

body.light-mode .app-footer {
    background: var(--color-primary-dark);
    color: var(--color-white);
}

.footer-inner {
    max-width: var(--container-max);
    margin: 0 auto;
}

.footer-top {
    display: grid;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-brand {
    text-align: center;
}

.footer-logo {
    font-size: var(--font-size-lg);
    font-weight: 700;
}

.footer-desc {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    margin-top: var(--spacing-sm);
}

body.light-mode .footer-desc {
    color: var(--color-accent-light);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    text-align: center;
}

.footer-col h3 {
    font-size: var(--font-size-sm);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-light);
}

body.light-mode .footer-col h3 {
    color: var(--color-accent-light);
}

.footer-col ul {
    list-style: none;
}

.footer-col a {
    color: var(--color-text);
    font-size: var(--font-size-sm);
    opacity: 0.8;
    transition: opacity var(--transition-fast);
}

body.light-mode .footer-col a {
    color: var(--color-white);
}

.footer-col a:hover {
    opacity: 1;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

body.light-mode .footer-bottom {
    border-top-color: rgba(255, 255, 255, 0.1);
}

.copyright {
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-sm);
}

.disclaimer {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

/* ============================================
   Mobile Bottom Navigation
   ============================================ */
.mobile-bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: var(--bottom-nav-height);
    background: rgba(10, 10, 30, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 -2px 20px rgba(0, 0, 0, 0.4), 0 -1px 0 rgba(123, 104, 238, 0.3);
    display: flex;
    justify-content: space-around;
    align-items: center;
    padding-bottom: env(safe-area-inset-bottom);
    z-index: 100;
    border-top: 1px solid rgba(123, 104, 238, 0.3);
    transition: background var(--transition-theme);
}

body.light-mode .mobile-bottom-nav {
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
}

.bottom-nav-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    padding: var(--spacing-sm);
    color: var(--color-text-light);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.bottom-nav-item.active {
    color: var(--color-primary-light);
}

body.light-mode .bottom-nav-item.active {
    color: var(--color-primary);
}

.nav-icon {
    font-size: var(--font-size-xl);
}

.nav-label {
    font-size: var(--font-size-xs);
    font-weight: 500;
}

/* ============================================
   Toast Notifications
   ============================================ */
.toast-container {
    position: fixed;
    bottom: calc(var(--bottom-nav-height) + var(--spacing-md));
    left: var(--spacing-md);
    right: var(--spacing-md);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    pointer-events: none;
}

.toast {
    background: var(--color-bg-elevated);
    color: var(--color-text);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    text-align: center;
    animation: toastIn 0.3s ease, toastOut 0.3s ease 2.7s forwards;
    pointer-events: auto;
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
}

body.light-mode .toast {
    background: var(--color-text);
    color: var(--color-white);
    border: none;
}

@keyframes toastIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes toastOut {
    from {
        opacity: 1;
        transform: translateY(0);
    }
    to {
        opacity: 0;
        transform: translateY(-20px);
    }
}

/* ============================================
   Loading State
   ============================================ */
.loading {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.loading::after {
    content: '';
    width: 16px;
    height: 16px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ============================================
   Responsive - Tablet
   ============================================ */
@media (min-width: 768px) {
    :root {
        --header-height: 70px;
    }

    .logo-text {
        display: inline;
    }

    .mobile-menu-btn {
        display: none;
    }

    .main-nav {
        display: block;
        position: static;
        padding: 0;
        overflow: visible;
        background: transparent;
    }

    .nav-list {
        flex-direction: row;
        gap: var(--spacing-sm);
    }

    .nav-list a {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .mobile-nav-overlay {
        display: none !important;
    }

    .mobile-bottom-nav {
        display: none;
    }

    body.rem-app {
        padding-bottom: 0;
    }

    .app-footer {
        padding-bottom: var(--spacing-2xl);
    }

    .calc-hero h1 {
        font-size: var(--font-size-3xl);
    }

    .calc-card {
        padding: var(--spacing-xl);
    }

    .footer-top {
        grid-template-columns: 1fr 2fr;
        text-align: left;
    }

    .footer-brand {
        text-align: left;
    }

    .footer-links {
        text-align: left;
    }
}

/* ============================================
   Responsive - Desktop
   ============================================ */
@media (min-width: 1024px) {
    .calc-hero h1 {
        font-size: var(--font-size-4xl);
    }

    .result-stats {
        grid-template-columns: repeat(4, 1fr);
    }

    .sitemap-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
    .app-header,
    .app-footer,
    .mobile-bottom-nav,
    .btn-submit,
    .share-buttons,
    .theme-toggle {
        display: none !important;
    }

    body.rem-app {
        padding: 0;
    }

    body {
        background: #fff;
        color: #000;
    }

    .result-card {
        color: #000;
        background: #fff;
        box-shadow: none;
        border: 1px solid #ccc;
    }
}

/* ============================================
   Reduced Motion
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ============================================
   Antigravity Floating Stars Effect
   떠다니는 별 효과 - 잠이 잘 오는 느낌
   ============================================ */
.floating-stars {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.floating-star {
    position: absolute;
    width: 4px;
    height: 4px;
    background: white;
    border-radius: 50%;
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.8),
                0 0 20px rgba(184, 169, 255, 0.5);
    animation: floatUp 15s linear infinite;
    opacity: 0;
}

.floating-star:nth-child(1) { left: 5%; animation-delay: 0s; animation-duration: 18s; }
.floating-star:nth-child(2) { left: 15%; animation-delay: 3s; animation-duration: 22s; }
.floating-star:nth-child(3) { left: 25%; animation-delay: 6s; animation-duration: 16s; }
.floating-star:nth-child(4) { left: 35%; animation-delay: 1s; animation-duration: 20s; }
.floating-star:nth-child(5) { left: 45%; animation-delay: 4s; animation-duration: 19s; }
.floating-star:nth-child(6) { left: 55%; animation-delay: 7s; animation-duration: 17s; }
.floating-star:nth-child(7) { left: 65%; animation-delay: 2s; animation-duration: 21s; }
.floating-star:nth-child(8) { left: 75%; animation-delay: 5s; animation-duration: 18s; }
.floating-star:nth-child(9) { left: 85%; animation-delay: 8s; animation-duration: 23s; }
.floating-star:nth-child(10) { left: 95%; animation-delay: 0s; animation-duration: 20s; }
.floating-star:nth-child(11) { left: 10%; animation-delay: 9s; animation-duration: 15s; }
.floating-star:nth-child(12) { left: 30%; animation-delay: 11s; animation-duration: 24s; }
.floating-star:nth-child(13) { left: 50%; animation-delay: 13s; animation-duration: 19s; }
.floating-star:nth-child(14) { left: 70%; animation-delay: 10s; animation-duration: 21s; }
.floating-star:nth-child(15) { left: 90%; animation-delay: 12s; animation-duration: 17s; }

@keyframes floatUp {
    0% {
        bottom: -10px;
        opacity: 0;
        transform: translateX(0) scale(0.5);
    }
    10% {
        opacity: 0.8;
        transform: translateX(10px) scale(1);
    }
    50% {
        opacity: 0.6;
        transform: translateX(-15px) scale(0.8);
    }
    90% {
        opacity: 0.4;
        transform: translateX(5px) scale(0.6);
    }
    100% {
        bottom: 100vh;
        opacity: 0;
        transform: translateX(0) scale(0.3);
    }
}

/* 유성 효과 (가끔 나타남) */
.shooting-star {
    position: fixed;
    width: 100px;
    height: 2px;
    background: linear-gradient(90deg,
        rgba(255, 255, 255, 0.9),
        rgba(184, 169, 255, 0.6),
        transparent);
    border-radius: 50%;
    animation: shoot 8s ease-in-out infinite;
    opacity: 0;
    z-index: 0;
    pointer-events: none;
}

.shooting-star:nth-child(1) {
    top: 15%;
    right: 10%;
    animation-delay: 0s;
}

.shooting-star:nth-child(2) {
    top: 35%;
    right: 25%;
    animation-delay: 4s;
}

.shooting-star:nth-child(3) {
    top: 55%;
    right: 5%;
    animation-delay: 8s;
}

@keyframes shoot {
    0%, 90%, 100% {
        opacity: 0;
        transform: translateX(0) translateY(0) rotate(-45deg);
    }
    5% {
        opacity: 1;
    }
    15% {
        opacity: 0;
        transform: translateX(-300px) translateY(200px) rotate(-45deg);
    }
}

/* 몽환적인 글로우 오버레이 */
.dream-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    background: radial-gradient(ellipse at center,
        transparent 0%,
        rgba(45, 27, 105, 0.1) 50%,
        rgba(10, 10, 30, 0.3) 100%);
    animation: breathe 8s ease-in-out infinite;
}

@keyframes breathe {
    0%, 100% {
        opacity: 0.3;
    }
    50% {
        opacity: 0.6;
    }
}

/* 슬립 모드 활성화시 더 어두운 효과 */
.sleep-mode body::after {
    background:
        radial-gradient(ellipse 600px 400px at 20% 30%, rgba(100, 50, 150, 0.1), transparent),
        radial-gradient(ellipse 500px 300px at 80% 70%, rgba(50, 80, 150, 0.1), transparent);
}

/* 카드 호버 시 은은한 별빛 효과 */
.calc-card:hover::after,
.result-card:hover::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(184, 169, 255, 0.1) 0%, transparent 50%);
    transform: translate(-50%, -50%);
    pointer-events: none;
    animation: cardGlow 2s ease-out;
}

@keyframes cardGlow {
    0% { opacity: 0; transform: translate(-50%, -50%) scale(0.5); }
    50% { opacity: 1; }
    100% { opacity: 0; transform: translate(-50%, -50%) scale(1); }
}

/* 별 점수 표시 애니메이션 */
.result-score .stars {
    animation: starPulse 2s ease-in-out infinite;
}

@keyframes starPulse {
    0%, 100% {
        text-shadow: 0 0 10px rgba(255, 230, 109, 0.5);
    }
    50% {
        text-shadow: 0 0 20px rgba(255, 230, 109, 0.8),
                     0 0 40px rgba(255, 230, 109, 0.4);
    }
}

/* 라이트 모드에서는 우주 효과 최소화 */
body.light-mode::before,
body.light-mode::after {
    display: none;
}

body.light-mode .floating-stars,
body.light-mode .shooting-star,
body.light-mode .dream-overlay {
    display: none;
}