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

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

body {
    overflow-x: hidden;
}

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

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

/* Selection */
::selection {
    background: #0f766e;
    color: white;
}

/* Navigation */
.nav {
    transition: box-shadow 0.3s ease, background 0.3s ease;
}

.nav.scrolled {
    box-shadow: 0 1px 20px rgba(0, 0, 0, 0.06);
}

.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: #0f766e;
    transition: width 0.3s ease;
}

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

/* Mobile Menu */
.mobile-menu {
    backdrop-filter: blur(20px);
    background: rgba(255, 255, 255, 0.98);
}

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

.mobile-menu.closed {
    opacity: 0;
    pointer-events: none;
}

/* Menu Button */
.menu-line {
    transition: transform 0.3s ease, opacity 0.3s ease;
}

#menuBtn.active .menu-line:nth-child(1) {
    transform: translateY(5px) rotate(45deg);
}

#menuBtn.active .menu-line:nth-child(2) {
    transform: translateY(-5px) rotate(-45deg);
    opacity: 0;
}

/* Hero */
.hero-label {
    opacity: 0;
    animation: fadeUp 0.8s ease forwards;
    animation-delay: 0.2s;
}

.hero-headline {
    opacity: 0;
    animation: fadeUp 0.8s ease forwards;
    animation-delay: 0.4s;
}

.hero-subtitle {
    opacity: 0;
    animation: fadeUp 0.8s ease forwards;
    animation-delay: 0.6s;
}

.hero-cta {
    opacity: 0;
    animation: fadeUp 0.8s ease forwards;
    animation-delay: 0.8s;
}

.hero-stats {
    opacity: 0;
    animation: fadeUp 0.8s ease forwards;
    animation-delay: 1s;
}

.hero-image-wrapper {
    opacity: 0;
    animation: fadeIn 1s ease forwards;
    animation-delay: 0.5s;
}

.hero-image-accent {
    opacity: 0;
    animation: fadeIn 0.8s ease forwards;
    animation-delay: 0.9s;
}

.hero-badge {
    opacity: 0;
    animation: scaleIn 0.6s ease forwards;
    animation-delay: 1.1s;
}

.hero-scroll-indicator {
    opacity: 0;
    animation: fadeIn 0.8s ease forwards;
    animation-delay: 1.4s;
}

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

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* 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-secondary {
    transition: all 0.3s ease;
}

/* Section Labels */
.section-label {
    display: block;
}

.section-title {
    position: relative;
}

.section-subtitle {
    line-height: 1.7;
}

/* Service Cards */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.service-card {
    padding: 2.5rem;
    border: 1px solid #f1f5f9;
    transition: all 0.4s ease;
    position: relative;
    background: white;
}

.service-card:hover {
    border-color: #0f766e;
    transform: translateY(-4px);
    box-shadow: 0 20px 60px rgba(15, 118, 110, 0.08);
}

.service-card-icon svg {
    transition: transform 0.3s ease;
}

.service-card:hover .service-card-icon svg {
    transform: scale(1.1);
}

/* About */
.about-value-number {
    display: inline-block;
    transition: transform 0.3s ease;
}

.about-value:hover .about-value-number {
    transform: translateY(-4px);
}

/* Gallery */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.gallery-item {
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.gallery-item:nth-child(1) { grid-row: span 2; }
.gallery-item:nth-child(3) { grid-row: span 2; }
.gallery-item:nth-child(5) { grid-row: span 2; }

.gallery-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.7s ease;
}

.gallery-item:hover .gallery-img {
    transform: scale(1.08);
}

.gallery-item-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(15, 118, 110, 0.8), transparent);
    display: flex;
    align-items: flex-end;
    padding: 1.5rem;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.gallery-item:hover .gallery-item-overlay {
    opacity: 1;
}

/* Testimonials */
.testimonials-slider {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    overflow: hidden;
}

.testimonial-track {
    display: flex;
    transition: transform 0.5s ease;
}

.testimonial-card {
    min-width: 100%;
    padding: 2rem;
    text-align: center;
}

.testimonial-quote {
    color: rgba(255, 255, 255, 0.3);
    margin-bottom: 1.5rem;
}

.testimonial-text {
    font-style: italic;
}

.testimonial-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.4);
    background: transparent;
    cursor: pointer;
    transition: all 0.3s ease;
    padding: 0;
}

.testimonial-dot.active {
    background: white;
    border-color: white;
    transform: scale(1.2);
}

/* Contact Form */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
}

.form-input {
    width: 100%;
    padding: 1rem 0;
    border: none;
    border-bottom: 1px solid #e2e8f0;
    background: transparent;
    font-family: inherit;
    font-size: 1rem;
    font-weight: 300;
    color: #1e293b;
    transition: border-color 0.3s ease;
    outline: none;
}

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

.form-input:focus {
    border-bottom-color: #0f766e;
}

.form-select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0 center;
    padding-right: 2rem;
}

.form-textarea {
    resize: vertical;
    min-height: 100px;
}

.form-success {
    text-align: center;
    padding: 2rem;
    animation: fadeUp 0.5s ease;
}

/* Social Icons */
.social-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 1px solid #334155;
    border-radius: 50%;
    color: #94a3b8;
    transition: all 0.3s ease;
}

.social-icon:hover {
    border-color: #2dd4bf;
    color: #2dd4bf;
    transform: translateY(-2px);
}

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

.reveal.revealed {
    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; }

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    html {
        scroll-behavior: auto;
    }
    .reveal {
        opacity: 1;
        transform: none;
    }
}

/* Responsive */
@media (max-width: 1024px) {
    .hero-headline {
        font-size: clamp(2.5rem, 6vw, 4.5rem);
    }
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .gallery-item:nth-child(1),
    .gallery-item:nth-child(3),
    .gallery-item:nth-child(5) {
        grid-row: span 1;
    }
}

@media (max-width: 768px) {
    .hero-image-accent {
        display: none;
    }
    .gallery-grid {
        grid-template-columns: 1fr;
    }
    .services-grid {
        grid-template-columns: 1fr;
    }
    .about-image-grid {
        max-width: 400px;
    }
}

@media (max-width: 480px) {
    .hero-stats {
        flex-direction: column;
        gap: 1rem;
    }
}