/* Base & Animations */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    overflow-x: hidden;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 6px;
}
::-webkit-scrollbar-track {
    background: #f1f5f9;
}
::-webkit-scrollbar-thumb {
    background: #94a3b8;
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
    background: #0d9488;
}

/* Fade In Animations */
.fade-in {
    opacity: 0;
    animation: fadeIn 0.8s ease forwards;
}

.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease forwards;
}

.delay-100 { animation-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; }
.delay-300 { animation-delay: 0.3s; }

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

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

/* Navbar */
.navbar-scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    box-shadow: 0 1px 20px rgba(0, 0, 0, 0.04);
}

/* Mobile Menu */
.mobile-link {
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.3s 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; }

/* Menu Button Animation */
.menu-open #line1 {
    transform: rotate(45deg) translate(5px, 5px);
}
.menu-open #line2 {
    opacity: 0;
}
.menu-open #line3 {
    transform: rotate(-45deg) translate(5px, -5px);
    width: 1.5rem;
}

/* Service Cards */
.service-card {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.5s ease;
}

.service-card.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Project Cards */
.project-card {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease;
}

.project-card.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Process Steps */
.process-step {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.5s ease;
}

.process-step.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Selection */
::selection {
    background: #ccfbf1;
    color: #115e59;
}

/* Focus styles */
input:focus, select:focus, textarea:focus {
    outline: none;
}

/* Smooth image loading */
img {
    image-rendering: -webkit-optimize-contrast;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    html {
        scroll-padding-top: 70px;
    }
}