/* ============================================================
   KOMPONEN UMUM - Header, Footer, Tombol, Tema Toggle
   ============================================================ */

/* ---------- CONTAINER ---------- */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* ---------- TOMBOL TEMA (Dark/Light Toggle) ---------- */
.theme-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: var(--radius-full);
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    transition: all var(--transition-fast);
    cursor: pointer;
    flex-shrink: 0;
}

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

.theme-toggle:active {
    transform: scale(0.95);
}

.theme-toggle svg {
    width: 20px;
    height: 20px;
    stroke: currentColor;
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.theme-toggle .icon-sun  { color: var(--accent-secondary); }
.theme-toggle .icon-moon { color: var(--accent-primary); }

/* ============================================================
   HEADER
   ============================================================ */

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
    background: color-mix(in srgb, var(--bg-primary) 85%, transparent);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-lg);
    padding-top: var(--space-md);
    padding-bottom: var(--space-md);
    min-height: 72px;
}

/* ---------- BRAND / LOGO ---------- */
.brand {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    color: var(--text-primary);
    text-decoration: none;
    flex-shrink: 0;
}

.brand:hover { color: var(--text-primary); }

.brand-logo {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    flex-shrink: 0;
    position: relative;
}

.brand-logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: opacity var(--transition-fast);
}

/* Tampilkan logo terang hanya di light mode */
[data-theme="light"] .logo-light { display: block; }
[data-theme="light"] .logo-dark  { display: none; }

/* Tampilkan logo gelap hanya di dark mode */
[data-theme="dark"] .logo-light { display: none; }
[data-theme="dark"] .logo-dark  { display: block; }

.brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.brand-name {
    font-weight: 800;
    font-size: 1.1rem;
    letter-spacing: -0.02em;
}

.brand-tagline {
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-top: 2px;
}

/* ---------- NAVIGASI ---------- */
.main-nav { display: flex; }

.nav-list {
    display: flex;
    gap: var(--space-sm);
    align-items: center;
}

.nav-link {
    display: inline-block;
    padding: 0.5rem 0.9rem;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.nav-link:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
}

.nav-link.active {
    color: var(--accent-secondary);
    background: color-mix(in srgb, var(--accent-secondary) 12%, transparent);
}

/* ---------- HEADER ACTIONS ---------- */
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex-shrink: 0;
}

.header-cta { display: inline-flex; }

/* ---------- MOBILE MENU TOGGLE ---------- */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 42px;
    height: 42px;
    border-radius: var(--radius-md);
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    transition: background var(--transition-fast);
}

.menu-toggle:hover { background: var(--bg-hover); }

.menu-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.menu-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.open span:nth-child(2) { opacity: 0; }
.menu-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   TOMBOL (Button)
   ============================================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: all var(--transition-fast);
    white-space: nowrap;
    line-height: 1;
}

.btn-sm { padding: 0.5rem 1rem; font-size: 0.875rem; }
.btn-lg { padding: 1rem 2rem; font-size: 1.05rem; }

.btn-primary {
    background: var(--accent-primary);
    color: white;
}

.btn-primary:hover {
    background: var(--accent-primary-h);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.btn-secondary {
    background: var(--accent-secondary);
    color: var(--text-inverse);
}

.btn-secondary:hover {
    background: var(--accent-secondary-h);
    color: var(--text-inverse);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    border: 1.5px solid var(--border-color);
    color: var(--text-primary);
}

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

/* ============================================================
   FOOTER
   ============================================================ */

.site-footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: var(--space-3xl) 0 var(--space-xl);
    margin-top: var(--space-3xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: var(--space-2xl);
    margin-bottom: var(--space-2xl);
}

.footer-col h3 {
    font-size: 1.25rem;
    margin-bottom: var(--space-md);
    color: var(--text-primary);
}

.footer-col h4 {
    font-size: 0.95rem;
    margin-bottom: var(--space-md);
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 700;
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: var(--space-md);
    max-width: 32ch;
}

.footer-social {
    display: flex;
    gap: var(--space-sm);
    margin-top: var(--space-md);
}

.footer-social a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    background: var(--bg-elevated);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.footer-social a:hover {
    background: var(--accent-primary);
    color: white;
    transform: translateY(-2px);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    transition: color var(--transition-fast);
}

.footer-links a:hover { color: var(--accent-secondary); }

.footer-links svg { flex-shrink: 0; }

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: var(--space-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-md);
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (max-width: 1024px) {
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .brand-tagline { display: none; }
    .header-cta { display: none; }
    .menu-toggle { display: flex; }

    .main-nav {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--bg-primary);
        border-bottom: 1px solid var(--border-color);
        padding: var(--space-lg);
        transform: translateY(-120%);
        transition: transform var(--transition-base);
        box-shadow: var(--shadow-lg);
    }

    .main-nav.open { transform: translateY(0); }

    .nav-list {
        flex-direction: column;
        align-items: stretch;
        gap: var(--space-xs);
    }

    .nav-link {
        padding: var(--space-md);
        font-size: 1rem;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

/* ============================================================
   AKSESIBILITAS: Hormati preferensi "reduce motion"
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
    html { scroll-behavior: auto; }
}