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

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

body {
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #f1f5f9;
}
::-webkit-scrollbar-thumb {
    background: #94a3b8;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #64748b;
}

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

/* Navigation */
.nav {
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.nav.scrolled {
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(255,255,255,0.05);
}

.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1.5px;
    background: #5eead4;
    transition: width 0.3s ease;
}

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

.nav-link:hover {
    color: #fff;
}

/* Hamburger */
.hamburger-line {
    transition: all 0.3s ease;
}

.nav-toggle.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(4px, 4px);
}
.nav-toggle.active .hamburger-line:nth-child(2) {
    opacity: 0;
}
.nav-toggle.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(4px, -4px);
    width: 20px;
    margin-left: 0;
}

/* Hero */
.hero {
    position: relative;
}

.hero-bg {
    transform: scale(1.05);
    transition: transform 8s ease-out;
}

.hero.loaded .hero-bg {
    transform: scale(1);
}

.hero-overlay {
    background: linear-gradient(
        135deg,
        rgba(15, 23, 42, 0.93) 0%,
        rgba(15, 23, 42, 0.78) 50%,
        rgba(15, 23, 42, 0.55) 100%
    );
}

.hero-content {
    animation: heroFadeUp 1s ease-out forwards;
    opacity: 0;
}

@keyframes heroFadeUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-badge {
    animation: heroFadeUp 1s ease-out 0.2s forwards;
    opacity: 0;
}

.hero h1 {
    animation: heroFadeUp 1s ease-out 0.35s forwards;
    opacity: 0;
}

.hero p {
    animation: heroFadeUp 1s ease-out 0.5s forwards;
    opacity: 0;
}

.hero .flex {
    animation: heroFadeUp 1s ease-out 0.65s forwards;
    opacity: 0;
}

.hero-scroll {
    animation: heroFadeUp 1s ease-out 0.8s forwards;
    opacity: 0;
}

/* Scroll Indicator */
.scroll-indicator {
    animation: scrollBounce 2s ease-in-out infinite;
}

@keyframes scrollBounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(8px); }
}

/* Buttons */
.btn-primary {
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
    transition: left 0.5s ease;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 20px 40px -12px rgba(13, 148, 136, 0.4);
}

.btn-secondary {
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    transform: translateY(-2px);
    border-color: rgba(255,255,255,0.4);
}

.btn-nav {
    transition: all 0.3s ease;
}

.btn-nav:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.btn-cta {
    transition: all 0.3s ease;
}

.btn-cta:hover {
    transform: translateY(-2px);
}

/* Sections */
.section {
    position: relative;
}

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

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, #0d9488, #5eead4);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

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

.service-link {
    position: relative;
}

.service-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background: #0d9488;
    transition: width 0.3s ease;
}

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

/* Area Tags */
.area-tag {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1rem;
    background: #f1f5f9;
    border: 1px solid #e2e8f0;
    border-radius: 100px;
    font-size: 0.875rem;
    color: #475569;
    font-weight: 500;
    transition: all 0.3s ease;
}

.area-tag:hover {
    background: #0d9488;
    border-color: #0d9488;
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(13, 148, 136, 0.3);
}

/* Form Inputs */
.input {
    transition: all 0.3s ease;
}

.input:focus {
    box-shadow: 0 0 0 4px rgba(13, 148, 136, 0.1);
}

.input::placeholder {
    color: #94a3b8;
}

.btn-submit {
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.btn-submit::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
    transition: left 0.5s ease;
}

.btn-submit:hover::before {
    left: 100%;
}

.btn-submit:hover {
    transform: translateY(-1px);
}

/* Scroll Reveal */
.scroll-reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

@media (prefers-reduced-motion: no-preference) {
    .scroll-reveal {
        opacity: 0;
        transform: translateY(24px);
        transition: opacity 0.7s ease, transform 0.7s ease;
    }

    .scroll-reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Mobile Menu */
.mobile-menu {
    animation: mobileMenuSlide 0.3s ease forwards;
}

@keyframes mobileMenuSlide {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.mobile-link {
    position: relative;
    padding-left: 0;
}

/* Utility */
.label {
    letter-spacing: 0.15em;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .hero p {
        font-size: 1.1rem;
    }

    .section {
        padding: 4rem 1.5rem;
    }

    .service-card {
        padding: 1.5rem;
    }
}

@media (max-width: 640px) {
    .hero h1 {
        font-size: 2rem;
    }
}