/* ===== CSS Variables ===== */
:root {
    --bg: #fafaf9;
    --text: #1a1a1a;
    --text-secondary: #737373;
    --accent: #e11d48;
    --border: #e5e5e5;
    --card-bg: #ffffff;
    --transition: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="dark"] {
    --bg: #0a0a0a;
    --text: #fafafa;
    --text-secondary: #a3a3a3;
    --accent: #fb7185;
    --border: #262626;
    --card-bg: #141414;
}

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

/* ===== Typography ===== */
html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Playfair Display', 'Noto Sans KR', 'Noto Sans JP', 'Noto Sans SC', 'Noto Sans Arabic', serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: background var(--transition), color var(--transition);
    line-height: 1.6;
}

/* RTL Support for Arabic */
[data-lang="ar"] body {
    direction: rtl;
    font-family: 'Noto Sans Arabic', 'Playfair Display', serif;
}

[data-lang="ar"] .work-arrow {
    transform: rotate(180deg);
}

/* ===== Navigation ===== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2.5rem;
    z-index: 100;
}

/* Language Selector */
.lang-selector {
    position: relative;
}

.lang-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 100px;
    color: var(--text);
    font-family: inherit;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all var(--transition);
}

.lang-btn:hover {
    border-color: var(--text);
}

.lang-dropdown {
    position: absolute;
    top: calc(100% + 0.5rem);
    left: 0;
    min-width: 140px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 0.5rem;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] .lang-dropdown {
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
}

.lang-dropdown.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-dropdown button {
    display: block;
    width: 100%;
    padding: 0.6rem 1rem;
    background: transparent;
    border: none;
    border-radius: 8px;
    color: var(--text);
    font-family: inherit;
    font-size: 0.85rem;
    text-align: left;
    cursor: pointer;
    transition: background 0.2s ease;
}

[data-lang="ar"] .lang-dropdown button {
    text-align: right;
}

.lang-dropdown button:hover {
    background: var(--border);
}

/* Theme Button */
.theme-btn {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--transition);
}

.theme-btn:hover {
    border-color: var(--text);
    transform: rotate(180deg);
}

.theme-icon {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--text);
    transition: all var(--transition);
}

[data-theme="dark"] .theme-icon {
    transform: scale(0.6);
    box-shadow: inset -6px -6px 0 var(--bg);
}

/* ===== Main Content ===== */
.main {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 8rem 2.5rem 4rem;
    max-width: 900px;
    margin: 0 auto;
    width: 100%;
}

/* ===== Header ===== */
.header {
    margin-bottom: 5rem;
    text-align: center;
}

.intro {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    letter-spacing: 0.02em;
    animation: fadeIn 1s ease both;
}

.title {
    font-size: clamp(3rem, 12vw, 8rem);
    font-weight: 400;
    letter-spacing: -0.03em;
    line-height: 1;
    animation: fadeIn 1s ease 0.2s both;
}

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

/* ===== Works Section ===== */
.works {
    display: flex;
    flex-direction: column;
}

.work-item {
    display: grid;
    grid-template-columns: 60px 1fr auto;
    align-items: center;
    gap: 2rem;
    padding: 2rem 0;
    text-decoration: none;
    color: inherit;
    border-top: 1px solid var(--border);
    transition: all var(--transition);
    animation: fadeIn 0.8s ease both;
}

.work-item:nth-child(1) { animation-delay: 0.3s; }
.work-item:nth-child(2) { animation-delay: 0.4s; }
.work-item:nth-child(3) { animation-delay: 0.5s; }

.work-item:last-child {
    border-bottom: 1px solid var(--border);
}

.work-item:not(.coming-soon):hover {
    padding-left: 1rem;
}

[data-lang="ar"] .work-item:not(.coming-soon):hover {
    padding-left: 0;
    padding-right: 1rem;
}

.work-item:not(.coming-soon):hover .work-title {
    color: var(--accent);
}

.work-item:not(.coming-soon):hover .work-arrow {
    transform: translateX(8px);
    opacity: 1;
}

[data-lang="ar"] .work-item:not(.coming-soon):hover .work-arrow {
    transform: translateX(-8px) rotate(180deg);
}

.work-number {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-family: 'Playfair Display', serif;
}

.work-title {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    font-weight: 400;
    transition: color var(--transition);
}

.work-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

.work-arrow {
    font-size: 1.5rem;
    color: var(--text-secondary);
    opacity: 0;
    transition: all var(--transition);
}

.coming-soon {
    cursor: default;
    opacity: 0.5;
}

.coming-soon .work-title {
    font-style: italic;
}

/* ===== Footer ===== */
.footer {
    padding: 2rem 2.5rem;
    text-align: center;
}

.footer-line {
    width: 60px;
    height: 1px;
    background: var(--border);
    margin: 0 auto 1.5rem;
}

.copyright {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .nav {
        padding: 1rem 1.5rem;
    }
    
    .main {
        padding: 7rem 1.5rem 3rem;
    }
    
    .header {
        margin-bottom: 3rem;
    }
    
    .work-item {
        grid-template-columns: 40px 1fr auto;
        gap: 1rem;
        padding: 1.5rem 0;
    }
    
    .work-arrow {
        display: none;
    }
    
    .footer {
        padding: 1.5rem;
    }
}

/* ===== Selection ===== */
::selection {
    background: var(--accent);
    color: white;
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}