/* ==========================================================================
   Layout Styles (Navbar, Footer, Structure)
   ========================================================================== */

/* Header & Navbar - Floating Island Style */
.site-header {
    position: fixed;
    top: var(--space-4);
    /* Floating from top */
    left: 50%;
    transform: translateX(-50%);
    width: calc(100% - var(--space-8));
    max-width: 1000px;
    /* Constrain width for the island look */
    z-index: 1000;

    background: rgba(255, 255, 255, 0.5);
    /* High transparency for strong blur */
    backdrop-filter: blur(32px) saturate(180%);
    -webkit-backdrop-filter: blur(32px) saturate(180%);

    border-radius: var(--radius-full);
    border: 1px solid rgba(255, 255, 255, 0.4);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(255, 255, 255, 0.4) inset;

    transition: all var(--transition-normal);
}

/* Dark mode header adjustment */
[data-theme="dark"] .site-header {
    background: rgba(10, 10, 10, 0.4);
    border-color: rgba(255, 255, 255, 0.08);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5), 0 1px 2px rgba(255, 255, 255, 0.05) inset;
}

.site-header.scrolled {
    top: var(--space-2);
    box-shadow: var(--shadow-md);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 60px;
    /* Slimmer height */
    padding: 0 var(--space-6);
    transition: height var(--transition-normal);
}

/* Logo */
.logo {
    font-family: var(--font-heading);
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--color-text-dark);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: var(--space-2);
    letter-spacing: -0.05em;
    /* Very tight brand tracking */
}

/* Desktop Navigation */
.main-nav ul {
    display: flex;
    gap: var(--space-6);
    list-style: none;
    margin: 0;
    padding: 0;
}

.main-nav a {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-muted);
    position: relative;
    padding: var(--space-2) 0;
    transition: color var(--transition-fast);
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--color-text-dark);
}

/* Minimalist dot indicator instead of underline */
.main-nav a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 50%;
    transform: translateX(-50%) scale(0);
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background-color: var(--color-text-dark);
    transition: transform var(--transition-fast);
}

.main-nav a:hover::after,
.main-nav a.active::after {
    transform: translateX(-50%) scale(1);
}

/* Nav CTA Button Highlight - Pill Style */
.main-nav a.nav-cta-btn {
    background-color: var(--color-text-dark);
    color: var(--color-bg-white);
    padding: 0.4rem 1rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.main-nav a.nav-cta-btn::after {
    display: none;
}

.main-nav a.nav-cta-btn:hover {
    transform: scale(1.02);
    opacity: 0.9;
    color: var(--color-bg-white);
}

/* Header Actions Container */
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

/* Theme Toggle Button */
.theme-toggle-btn {
    background: none;
    border: none;
    color: var(--color-text-dark);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-2);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.theme-toggle-btn:hover {
    background-color: rgba(0, 0, 0, 0.05);
    /* Very subtle hover */
}

[data-theme="dark"] .theme-toggle-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.theme-toggle-btn svg {
    transition: transform var(--transition-normal), opacity var(--transition-normal);
}

/* Mobile Menu Toggle */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-2);
    z-index: 1001;
}

.hamburger {
    display: block;
    width: 20px;
    /* Slightly smaller, sleeker hamburger */
    height: 2px;
    background-color: var(--color-text-dark);
    position: relative;
    transition: all var(--transition-fast);
    border-radius: 2px;
}

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

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

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

/* Hamburger Active State */
.mobile-menu-btn.active .hamburger {
    background-color: transparent;
}

.mobile-menu-btn.active .hamburger::before {
    top: 0;
    transform: rotate(45deg);
}

.mobile-menu-btn.active .hamburger::after {
    bottom: 0;
    transform: rotate(-45deg);
}

/* Main Content Area */
main {
    flex: 1 0 auto;
    padding-top: 120px;
    /* Increased padding for floating header */
}

/* Footer - Sleek & Premium */
.site-footer {
    background: linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, 0.02) 100%);
    position: relative;
    padding: var(--space-16) 0 var(--space-8);
    margin-top: auto;
    overflow: hidden;
}

[data-theme="dark"] .site-footer {
    background: linear-gradient(180deg, transparent 0%, rgba(255, 255, 255, 0.01) 100%);
}

.site-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 10%;
    right: 10%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-border), transparent);
    z-index: 2;
}

/* Subtle Animated Footer Glow */
.site-footer::after {
    content: '';
    position: absolute;
    bottom: -150px;
    left: 50%;
    transform: translateX(-50%);
    width: 60vw;
    max-width: 800px;
    height: 400px;
    background: radial-gradient(ellipse at bottom, rgba(14, 165, 233, 0.08) 0%, transparent 60%);
    z-index: 0;
    pointer-events: none;
    animation: slowPulse 8s ease-in-out infinite alternate;
}

[data-theme="dark"] .site-footer::after {
    background: radial-gradient(ellipse at bottom, rgba(14, 165, 233, 0.15) 0%, transparent 60%);
}

@keyframes slowPulse {
    0% {
        transform: translateX(-50%) scale(1);
        opacity: 0.7;
    }

    100% {
        transform: translateX(-50%) scale(1.1);
        opacity: 1;
    }
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    /* Give more space to links */
    gap: var(--space-12);
    margin-bottom: var(--space-12);
    position: relative;
    z-index: 1;
}

.footer-brand h3 {
    font-size: var(--text-2xl);
    font-weight: 800;
    letter-spacing: -0.03em;
    background: linear-gradient(135deg, var(--color-text-dark) 0%, var(--color-text-muted) 100%);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: var(--space-3);
}

.footer-brand p {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    max-width: 280px;
    line-height: 1.6;
}

.footer-links {
    display: flex;
    gap: var(--space-16);
    justify-content: flex-end;
}

.footer-links-col h4 {
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-text-dark);
    margin-bottom: var(--space-6);
    opacity: 0.8;
}

.footer-links-col ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.footer-links-col a {
    color: var(--color-text-muted);
    font-size: var(--text-sm);
    font-weight: 500;
    transition: all var(--transition-fast);
    display: inline-block;
    position: relative;
}

.footer-links-col a:hover {
    color: var(--color-text-dark);
    transform: translateX(4px);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-8);
    position: relative;
    z-index: 1;
    color: var(--color-text-muted);
    font-size: var(--text-xs);
    font-family: monospace;
    letter-spacing: 0.05em;
}

.footer-bottom::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-border), transparent);
}

.social-links {
    display: flex;
    gap: var(--space-6);
}

.social-links a {
    color: var(--color-text-muted);
    transition: color var(--transition-fast), transform var(--transition-fast);
}

.social-links a:hover {
    color: var(--color-text-dark);
    transform: scale(1.1);
}

/* Grids */
.grid {
    display: grid;
    gap: var(--space-6);
}

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

.grid-cols-3 {
    grid-template-columns: repeat(3, 1fr);
}

/* Responsive */
@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block;
    }

    .main-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 400px;
        height: 100vh;
        background-color: var(--color-bg-white);
        box-shadow: var(--shadow-2xl);
        padding: var(--space-24) var(--space-8) var(--space-8);
        transition: right var(--transition-normal);
        z-index: 1000;
    }

    .main-nav.open {
        right: 0;
    }

    .main-nav ul {
        flex-direction: column;
        gap: var(--space-6);
    }

    .main-nav a {
        font-size: var(--text-lg);
        display: inline-block;
    }

    /* Footer responsive */
    .footer-content {
        grid-template-columns: 1fr;
    }

    .footer-links {
        justify-content: flex-start;
        flex-wrap: wrap;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--space-4);
    }

    /* Grids responsive */
    .grid-cols-2,
    .grid-cols-3 {
        grid-template-columns: 1fr;
    }
}