/* Global Variables & Reset */
:root {
    /* Brand Colors */
    --color-primary: #FF8F6B;
    /* Warm Orange */
    --color-primary-dark: #FF6B6B;
    /* Darker Orange/Red */
    --color-secondary: #4CD964;
    /* Success Green */
    --color-text-main: #1C1C1E;
    /* Deep Blue/Black */
    --color-text-sub: #8E8E93;
    /* Gray */
    --color-bg-body: #F9F9F9;
    /* Off-white */
    --color-bg-white: #FFFFFF;

    /* Gradients */
    --gradient-main: linear-gradient(135deg, #FF8F6B 0%, #FF6B6B 100%);
    --gradient-bg: linear-gradient(180deg, #FFFFFF 0%, #FFF5F2 100%);

    /* Layout */
    --max-width: 1200px;
    --header-height: 80px;
    --radius-lg: 24px;
    --radius-md: 16px;
    --radius-sm: 8px;

    /* Shadows */
    --shadow-soft: 0 10px 40px rgba(0, 0, 0, 0.05);
    --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.08);

    /* Transitions */
    --transition-base: all 0.3s ease;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: "Pretendard", -apple-system, BlinkMacSystemFont, system-ui, Roboto, "Helvetica Neue", "Segoe UI", "Apple SD Gothic Neo", "Noto Sans KR", "Malgun Gothic", "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", sans-serif;
    background-color: var(--color-bg-body);
    color: var(--color-text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

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

/* Utilities */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    border-radius: var(--radius-md);
    font-weight: 700;
    font-size: 1rem;
    transition: var(--transition-base);
    cursor: pointer;
}

.btn-primary {
    background: var(--gradient-main);
    color: white;
    box-shadow: 0 4px 15px rgba(255, 111, 107, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 111, 107, 0.4);
}

.btn-secondary {
    background-color: white;
    color: var(--color-primary-dark);
    border: 1px solid rgba(255, 111, 107, 0.2);
}

/* Animation Classes */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in {
    animation: fadeInUp 0.8s ease forwards;
}

.delay-100 {
    animation-delay: 0.1s;
}

.delay-200 {
    animation-delay: 0.2s;
}

.delay-300 {
    animation-delay: 0.3s;
}

/* Header */
header {
    height: var(--header-height);
    display: flex;
    align-items: center;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.05);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 800;
    font-size: 1.5rem;
    color: var(--color-text-main);
}

.logo img {
    height: 32px;
    width: auto;
    border-radius: 6px;
}

/* Footer */
footer {
    background-color: white;
    padding: 60px 0;
    border-top: 1px solid #eee;
    margin-top: 80px;
}

footer .footer-content {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

footer .company-info h3 {
    font-size: 1.1rem;
    margin-bottom: 12px;
}

footer .links {
    display: flex;
    gap: 24px;
}

footer .links a {
    color: var(--color-text-sub);
    font-size: 0.95rem;
}

footer .links a:hover {
    color: var(--color-primary);
    text-decoration: underline;
}

footer .copyright {
    color: #ccc;
    font-size: 0.85rem;
    margin-top: 24px;
}

.lang-selector {
    margin-top: 20px;
    display: flex;
    gap: 12px;
    font-size: 0.9rem;
    color: var(--color-text-sub);
}

.lang-selector a {
    transition: var(--transition-base);
}

.lang-selector a:hover {
    color: var(--color-primary);
}

.lang-selector .active {
    font-weight: 700;
    color: var(--color-text-main);
}

/* Legal Page Styles */
.legal-page {
    padding-top: calc(var(--header-height) + 40px);
    padding-bottom: 80px;
}

.legal-content .date {
    color: var(--color-text-sub);
    margin-bottom: 30px;
    display: block;
}

.markdown-body {
    background-color: white;
    padding: 40px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
}

.markdown-body h1 {
    font-size: 2rem;
    margin-bottom: 24px;
}

.markdown-body h2 {
    font-size: 1.4rem;
    margin-top: 32px;
    margin-bottom: 16px;
    color: var(--color-text-main);
}

.markdown-body h3 {
    font-size: 1.1rem;
    margin-top: 24px;
    margin-bottom: 12px;
}

.markdown-body p {
    margin-bottom: 16px;
    color: #444;
}

.markdown-body ul {
    list-style-type: disc;
    padding-left: 24px;
    margin-bottom: 16px;
}

.markdown-body strong {
    color: var(--color-text-main);
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    :root {
        --color-bg-body: #0D1117;
        --color-bg-white: #161B22;
        --color-text-main: #F0F6FC;
        --color-text-sub: #8B949E;

        --shadow-soft: 0 10px 40px rgba(0, 0, 0, 0.5);
        --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.5);
    }

    header {
        background: rgba(13, 17, 23, 0.8);
        box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05);
    }

    .logo {
        color: var(--color-text-main);
    }

    .markdown-body {
        background-color: var(--color-bg-white);
    }

    .markdown-body p,
    .markdown-body li {
        color: #C9D1D9;
    }

    footer {
        background-color: var(--color-bg-white);
        border-top: 1px solid #30363D;
    }

    .btn-secondary {
        background-color: transparent;
        color: var(--color-primary);
        border: 1px solid var(--color-primary);
    }
}

/* Explicit Dark Mode Override */
body.dark-mode {
    --color-bg-body: #0D1117;
    --color-bg-white: #161B22;
    --color-text-main: #F0F6FC;
    --color-text-sub: #8B949E;

    --shadow-soft: 0 10px 40px rgba(0, 0, 0, 0.5);
    --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.5);

    background-color: var(--color-bg-body);
    color: var(--color-text-main);
}

body.dark-mode header {
    background: rgba(13, 17, 23, 0.8);
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05);
}

body.dark-mode .logo {
    color: var(--color-text-main);
}

body.dark-mode .markdown-body {
    background-color: var(--color-bg-white);
}

body.dark-mode .markdown-body p,
body.dark-mode .markdown-body li {
    color: #C9D1D9;
}

body.dark-mode footer {
    background-color: var(--color-bg-white);
    border-top: 1px solid #30363D;
}

body.dark-mode .btn-secondary {
    background-color: transparent;
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
}

/* Explicit Light Mode Override (Forces Light even if System is Dark) */
body.light-mode {
    --color-bg-body: #F9F9F9;
    --color-bg-white: #FFFFFF;
    --color-text-main: #1C1C1E;
    --color-text-sub: #8E8E93;

    --shadow-soft: 0 10px 40px rgba(0, 0, 0, 0.05);
    --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.08);

    background-color: var(--color-bg-body);
    color: var(--color-text-main);
}

body.light-mode header {
    background: rgba(255, 255, 255, 0.8);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.05);
}

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

body.light-mode .markdown-body {
    background-color: var(--color-bg-white);
}

body.light-mode .markdown-body p,
body.light-mode .markdown-body li {
    color: #444;
}

body.light-mode footer {
    background-color: white;
    border-top: 1px solid #eee;
}

body.light-mode .btn-secondary {
    background-color: white;
    color: var(--color-primary-dark);
    border: 1px solid rgba(255, 111, 107, 0.2);
}