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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    min-height: 100vh;
    overflow-x: hidden;
}

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

::selection {
    background: rgba(13, 148, 136, 0.2);
    color: inherit;
}

/* ─── Scrollbar ─── */
::-webkit-scrollbar {
    width: 6px;
}
::-webkit-scrollbar-track {
    background: #f8fafc;
}
::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

/* ─── Section Label ─── */
.section-label {
    font-size: 11px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: #0d9488;
    font-weight: 400;
    font-family: 'Inter', system-ui, sans-serif;
}

/* ─── Divider ─── */
.divider-line {
    height: 1px;
    background: linear-gradient(to right, transparent, #e2e8f0, transparent);
}
.divider-line.bg-white\/10 {
    background: linear-gradient(to right, transparent, rgba(255,255,255,0.1), transparent);
}

/* ─── Navigation ─── */
.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: currentColor;
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

/* ─── Mobile Menu ─── */
.menu-line {
    display: block;
}

#mobile-menu.open {
    opacity: 1 !important;
    pointer-events: all !important;
}

#mobile-menu.open .mobile-link {
    animation: mobileLinkIn 0.4s ease forwards;
    opacity: 0;
}

#mobile-menu.open .mobile-link:nth-child(1) { animation-delay: 0.05s; }
#mobile-menu.open .mobile-link:nth-child(2) { animation-delay: 0.1s; }
#mobile-menu.open .mobile-link:nth-child(3) { animation-delay: 0.15s; }
#mobile-menu.open .mobile-link:nth-child(4) { animation-delay: 0.2s; }

@keyframes mobileLinkIn {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ─── Hero ─── */
.hero-img {
    animation: heroZoom 20s ease-out forwards;
}

@keyframes heroZoom {
    from { transform: scale(1.1); }
    to { transform: scale(1); }
}

/* ─── Scroll Line ─── */
.scroll-line {
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.4; transform: scaleY(1); }
    50% { opacity: 0.8; transform: scaleY(1.2); }
}

/* ─── Fade-up Animation ─── */
@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-up {
    animation: fadeUp 0.8s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

/* ─── Reveal Animations (progressive enhancement) ─── */
@media (prefers-reduced-motion: no-preference) {
    .reveal-up {
        opacity: 0;
        transform: translateY(24px);
        transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1),
                    transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
    }

    .reveal-left {
        opacity: 0;
        transform: translateX(-32px);
        transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1),
                    transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
    }

    .reveal-right {
        opacity: 0;
        transform: translateX(32px);
        transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1),
                    transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
    }

    .reveal-up.revealed,
    .reveal-left.revealed,
    .reveal-right.revealed {
        opacity: 1;
        transform: translate(0);
    }
}

/* Always visible when reduced motion is preferred */
@media (prefers-reduced-motion: reduce) {
    .reveal-up,
    .reveal-left,
    .reveal-right {
        opacity: 1;
        transform: none;
    }
}

/* ─── Card Hover ─── */
.group:hover .group-hover\:scale-105 {
    transform: scale(1.05);
}

/* ─── Focus Styles ─── */
a:focus-visible,
button:focus-visible {
    outline: 2px solid #0d9488;
    outline-offset: 3px;
    border-radius: 2px;
}

/* ─── Mobile Menu Animation ─── */
#mobile-menu {
    transition: opacity 0.4s ease, pointer-events 0.4s ease;
}

/* ─── Smooth section transitions ─── */
section {
    scroll-margin-top: 80px;
}

/* ─── Print ─── */
@media print {
    header, .scroll-line, .reveal-up, .reveal-left, .reveal-right {
        display: none;
    }
    body {
        color: #000;
        background: #fff;
    }
}