/* Express Tires — Premium Dark Luxury Theme */
/* Teal + Slate Grey + Gold Accent Palette */

:root {
    --teal-500: #14b8a6;
    --teal-600: #0d9488;
    --teal-700: #0f766e;
    --amber-400: #fbbf24;
    --amber-500: #f59e0b;
    --slate-950: #020617;
    --slate-900: #0f172a;
    --slate-800: #1e293b;
    --slate-700: #334155;
    --slate-600: #475569;
    --slate-500: #64748b;
    --slate-400: #94a3b8;
    --slate-300: #cbd5e1;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--slate-950);
    color: var(--slate-200);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.font-playfair {
    font-family: 'Playfair Display', Georgia, serif;
}

.font-inter {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* ===== NAVBAR ===== */
#navbar {
    background: transparent;
    transition: background 0.4s ease, box-shadow 0.4s ease, backdrop-filter 0.4s ease;
}

#navbar.scrolled {
    background: rgba(2, 6, 23, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(148, 163, 184, 0.07), 0 4px 30px rgba(0, 0, 0, 0.3);
}

/* ===== HERO ===== */
#hero {
    position: relative;
}

#hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 200px;
    background: linear-gradient(to top, var(--slate-950), transparent);
    pointer-events: none;
}

/* ===== SECTION DIVIDERS ===== */
section > .absolute.top-0 {
    background: linear-gradient(90deg, transparent, var(--teal-600), transparent);
    opacity: 0.3;
}

/* ===== SERVICE CARDS ===== */
.group:hover .group-hover\:-translate-y-1 {
    transform: translateY(-4px);
}

/* ===== SCROLL ANIMATIONS ===== */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }
.reveal-delay-6 { transition-delay: 0.6s; }

/* ===== MOBILE MENU ===== */
#mobile-menu.open {
    opacity: 1;
    pointer-events: all;
}

.mobile-link {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.4s ease, transform 0.4s ease, color 0.3s ease;
}

#mobile-menu.open .mobile-link {
    opacity: 1;
    transform: translateY(0);
}

#mobile-menu.open .mobile-link:nth-child(1) { transition-delay: 0.1s; }
#mobile-menu.open .mobile-link:nth-child(2) { transition-delay: 0.15s; }
#mobile-menu.open .mobile-link:nth-child(3) { transition-delay: 0.2s; }
#mobile-menu.open .mobile-link:nth-child(4) { transition-delay: 0.25s; }
#mobile-menu.open .mobile-link:nth-child(5) { transition-delay: 0.3s; }

/* ===== SELECTION ===== */
::selection {
    background: rgba(13, 148, 136, 0.3);
    color: var(--slate-100);
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--slate-950);
}
::-webkit-scrollbar-thumb {
    background: var(--slate-700);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--teal-600);
}

/* ===== FOCUS VISIBLE ===== */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
    outline: 2px solid var(--teal-500);
    outline-offset: 2px;
    border-radius: 4px;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    html {
        scroll-padding-top: 70px;
    }

    .font-playfair.text-5xl {
        font-size: 2.5rem;
    }
}