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

html {
    scroll-behavior: smooth;
    scrollbar-width: thin;
    scrollbar-color: #0d9488 #0f172a;
}

body {
    margin: 0;
    overflow-x: hidden;
}

::selection {
    background: rgba(13, 148, 136, 0.3);
    color: #f1f5f9;
}

/* ── Scrollbar ──────────────────────────────────── */
::-webkit-scrollbar {
    width: 6px;
}
::-webkit-scrollbar-track {
    background: #0f172a;
}
::-webkit-scrollbar-thumb {
    background: #0d9488;
    border-radius: 3px;
}

/* ── Hero Animations ────────────────────────────── */
.hero-subtitle {
    animation: slideUp 0.8s ease forwards;
    animation-delay: 0.2s;
    opacity: 0;
    transform: translateY(100%);
}

.hero-title {
    animation: slideUp 0.8s ease forwards;
    animation-delay: 0.4s;
    opacity: 0;
    transform: translateY(100%);
}

.hero-desc {
    animation: slideUp 0.8s ease forwards;
    animation-delay: 0.6s;
    opacity: 0;
    transform: translateY(100%);
}

.hero-cta {
    animation: slideUp 0.8s ease forwards;
    animation-delay: 0.8s;
    opacity: 0;
    transform: translateY(100%);
}

@keyframes slideUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ── Reveal on Scroll ───────────────────────────── */
.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; }

/* ── Menu Items ─────────────────────────────────── */
.menu-item {
    padding-bottom: 1.5rem;
    border-bottom: 1px solid rgba(51, 65, 85, 0.5);
}

.menu-item:last-child {
    border-bottom: none;
}

/* ── Navbar ─────────────────────────────────────── */
#navbar.scrolled {
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(51, 65, 85, 0.3);
}

.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: #2dd4bf;
    transition: width 0.3s ease;
}

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

/* ── Mobile Menu ────────────────────────────────── */
.mobile-link {
    position: relative;
}

/* ── Form Styles ────────────────────────────────── */
input:focus,
select:focus,
textarea:focus {
    outline: none;
}

input::placeholder,
textarea::placeholder {
    color: #475569;
}

/* ── Utility ────────────────────────────────────── */
.scroll-indicator {
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.4; }
    50% { opacity: 1; }
}

/* ── Responsive ─────────────────────────────────── */
@media (max-width: 767px) {
    .hero-title {
        font-size: 2.75rem;
    }

    .hero-title br {
        display: none;
    }

    .hero-title span {
        display: inline;
    }
}

@media (min-width: 768px) and (max-width: 1023px) {
    .hero-title {
        font-size: 3.5rem;
    }
}

@media (min-width: 1024px) {
    .hero-title {
        font-size: 4.5rem;
    }
}