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

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

body {
    margin: 0;
    line-height: 1.6;
}

::selection {
    background: #99f6e4;
    color: #042f2e;
}

/* ── Geometric Decorative Shapes ── */
.geo-shape {
    position: fixed;
    pointer-events: none;
    z-index: 0;
}

.shape-circle-1 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(20, 184, 166, 0.06) 0%, transparent 70%);
    top: -100px;
    right: -100px;
    border-radius: 50%;
    animation: float-slow 20s ease-in-out infinite;
}

.shape-circle-2 {
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(20, 184, 166, 0.04) 0%, transparent 70%);
    bottom: 10%;
    left: -80px;
    border-radius: 50%;
    animation: float-slow 25s ease-in-out infinite reverse;
}

.shape-square-1 {
    width: 120px;
    height: 120px;
    border: 2px solid rgba(20, 184, 166, 0.08);
    top: 30%;
    right: 5%;
    border-radius: 20px;
    transform: rotate(45deg);
    animation: spin-slow 30s linear infinite;
}

.shape-triangle {
    width: 0;
    height: 0;
    border-left: 50px solid transparent;
    border-right: 50px solid transparent;
    border-bottom: 87px solid rgba(20, 184, 166, 0.04);
    top: 60%;
    left: 3%;
    animation: float-slow 18s ease-in-out infinite;
}

.shape-dots {
    width: 100px;
    height: 100px;
    background-image: radial-gradient(circle, rgba(20, 184, 166, 0.1) 1px, transparent 1px);
    background-size: 12px 12px;
    top: 45%;
    right: 8%;
    border-radius: 50%;
    animation: float-slow 22s ease-in-out infinite reverse;
}

@keyframes float-slow {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-30px) rotate(5deg); }
}

@keyframes spin-slow {
    from { transform: rotate(45deg); }
    to { transform: rotate(405deg); }
}

/* ── Floating Card Animation ── */
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.animate-float {
    animation: float 4s ease-in-out infinite;
}

/* ── Navbar ── */
#navbar {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

#navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.06);
}

.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: #0d9488;
    transition: all 0.3s ease;
    transform: translateX(-50%);
    border-radius: 1px;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 60%;
}

/* ── 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;
    border-radius: 3px 3px 0 0;
}

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

/* ── 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; }

/* ── Back to Top ── */
#back-to-top {
    transition: opacity 0.3s ease, transform 0.3s ease;
}

#back-to-top.visible {
    opacity: 1;
    pointer-events: auto;
}

#back-to-top:hover {
    transform: translateY(-3px);
}

/* ── Mobile Menu ── */
#mobile-menu {
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ── Form Focus Styles ── */
input:focus,
textarea:focus {
    box-shadow: 0 0 0 4px rgba(13, 148, 136, 0.1);
}

/* ── Responsive ── */
@media (max-width: 768px) {
    .shape-circle-1 {
        width: 200px;
        height: 200px;
    }
    
    .shape-circle-2 {
        width: 150px;
        height: 150px;
    }
    
    .shape-square-1 {
        width: 60px;
        height: 60px;
    }
    
    .shape-triangle {
        display: none;
    }
}

@media (max-width: 640px) {
    html {
        scroll-padding-top: 80px;
    }
}