/* Base & Typography */
html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', system-ui, sans-serif;
}

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

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f5f9;
}

::-webkit-scrollbar-thumb {
    background: #0d9488;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #0f766e;
}

/* Hero Animations */
@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(2deg); }
    50% { transform: translateY(-12px) rotate(2deg); }
}

@keyframes float-reverse {
    0%, 100% { transform: translateY(0px) rotate(-1deg); }
    50% { transform: translateY(-8px) rotate(-1deg); }
}

@keyframes float-slow {
    0%, 100% { transform: translateY(0px) rotate(1deg); }
    50% { transform: translateY(-6px) rotate(1deg); }
}

.hero-card-1 {
    animation: float 6s ease-in-out infinite;
}

.hero-card-2 {
    animation: float-reverse 5s ease-in-out infinite;
}

.hero-card-3 {
    animation: float-slow 7s ease-in-out infinite;
}

/* Service Cards */
.service-card {
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #0d9488, #2dd4bf);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.5s ease;
}

.service-card:hover::before {
    transform: scaleX(1);
}

/* Gallery */
.gallery-item {
    overflow: hidden;
}

.gallery-item::after {
    content: '';
    position: absolute;
    inset: 0;
    border: 2px solid transparent;
    border-radius: inherit;
    transition: border-color 0.3s ease;
    pointer-events: none;
}

.gallery-item:hover::after {
    border-color: rgba(13, 148, 136, 0.4);
}

/* Process Steps */
.process-step {
    position: relative;
}

.process-step:hover .w-16 {
    background: #0d9488;
    border-color: #2dd4bf;
    transition: all 0.3s ease;
}

.process-step:hover .font-serif {
    color: #f0fdfa;
    transition: color 0.3s ease;
}

/* Navbar */
.nav-scrolled {
    background: rgba(255, 255, 255, 0.95) !important;
    backdrop-blur: 12px;
    box-shadow: 0 1px 20px rgba(0, 0, 0, 0.08);
}

.nav-scrolled .menu-line {
    background: #1e293b !important;
}

/* Mobile Menu */
.mobile-link {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.4s 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; }

/* Reveal Animations */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.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; }

/* Back to Top */
#back-to-top.visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: all;
}

/* Selection */
::selection {
    background: #0d9488;
    color: #f0fdfa;
}

/* Mobile Menu Line Animation */
.menu-open .menu-line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.menu-open .menu-line:nth-child(2) {
    opacity: 0;
}

.menu-open .menu-line:nth-child(3) {
    width: 1.5rem;
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Decorative pattern overlay */
.pattern-overlay {
    background-image: radial-gradient(circle at 1px 1px, rgba(13, 148, 136, 0.05) 1px, transparent 0);
    background-size: 24px 24px;
}