/* ========== RESET & BASE ========== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    background-color: #060e1a;
    color: #ffffff;
    font-family: 'Inter', system-ui, sans-serif;
    overflow-x: hidden;
}

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

@keyframes scrollLine {
    0%, 100% {
        opacity: 0.3;
        transform: scaleY(0.5);
        transform-origin: top;
    }
    50% {
        opacity: 1;
        transform: scaleY(1);
    }
}

.animate-fade-up {
    animation: fadeUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.animate-scroll-line {
    animation: scrollLine 1.8s ease-in-out infinite;
}

/* ========== SCROLL REVEAL ========== */
.reveal-on-scroll {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.reveal-on-scroll.revealed:nth-child(2) { transition-delay: 0.1s; }
.reveal-on-scroll.revealed:nth-child(3) { transition-delay: 0.2s; }
.reveal-on-scroll.revealed:nth-child(4) { transition-delay: 0.3s; }
.reveal-on-scroll.revealed:nth-child(5) { transition-delay: 0.4s; }
.reveal-on-scroll.revealed:nth-child(6) { transition-delay: 0.5s; }

/* ========== NAVBAR ========== */
.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: linear-gradient(90deg, #6ee7b7, #34d399);
    transition: width 0.3s ease;
}

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

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

/* ========== MOBILE MENU ========== */
.mobile-nav-link {
    position: relative;
    display: block;
    padding: 0.5rem 0;
}

.mobile-nav-link::after {
    content: '';
    display: block;
    width: 0;
    height: 1px;
    background: #6ee7b7;
    transition: width 0.3s ease;
}

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

#mobile-menu {
    animation: slideDown 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* ========== SERVICE CARDS ========== */
.service-card {
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(110, 231, 183, 0.3), transparent);
    opacity: 0;
    transition: opacity 0.5s ease;
}

.service-card:hover::before {
    opacity: 1;
}

/* ========== INPUT FOCUS ========== */
input:focus,
textarea:focus {
    border-color: rgba(110, 231, 183, 0.4) !important;
    box-shadow: 0 0 0 1px rgba(110, 231, 183, 0.1) !important;
}

/* ========== SELECTION ========== */
::selection {
    background: rgba(110, 231, 183, 0.2);
    color: #ffffff;
}

/* ========== SCROLLBAR ========== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #0a1628;
}

::-webkit-scrollbar-thumb {
    background: #1a3456;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #2a4a6e;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
    .font-serif {
        font-size: clamp(2rem, 8vw, 3rem);
    }
}