/* ===== CSS Custom Properties ===== */
:root {
    --color-navy-900: #0A1628;
    --color-navy-800: #1A2F47;
    --color-navy-700: #324055;
    --color-navy-600: #485A75;
    --color-navy-500: #627793;
    --color-navy-400: #8595A8;
    --color-navy-300: #9FB3C8;
    --color-navy-200: #BCCCDC;
    --color-navy-100: #D9E2EC;
    --color-navy-50: #F0F4F8;
    --color-mint-500: #1FA87E;
    --color-mint-400: #3EC49A;
    --color-mint-300: #6FD9B5;
    --color-mint-200: #A8EAD3;
    --color-mint-100: #D3F5E8;
    --color-mint-50: #F0FBF7;
}

/* ===== 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 {
    overflow-x: hidden;
}

/* ===== Selection ===== */
::selection {
    background-color: var(--color-mint-200);
    color: var(--color-navy-900);
}

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

@keyframes scrollBounce {
    0%, 100% { transform: translate(-50%, 0); opacity: 0.5; }
    50% { transform: translate(-50%, 8px); opacity: 1; }
}

/* ===== Floating Card ===== */
.floating-card {
    animation: floatCard 4s ease-in-out infinite;
}

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

/* ===== Hero Animations ===== */
.hero-tag {
    animation: fadeSlideUp 0.8s ease-out forwards;
    opacity: 0;
    animation-delay: 0.2s;
}

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

.hero-desc {
    opacity: 0;
    animation: fadeSlideUp 0.8s ease-out forwards;
    animation-delay: 0.6s;
}

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

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

@keyframes fadeSlideUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== Scroll Reveal (Progressive Enhancement) ===== */
.reveal {
    /* Default: visible — works without JS */
    opacity: 1;
    transform: none;
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

/* When JS is available, initial state is hidden */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(20px);
    }
    .reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== Service Cards ===== */
.service-card {
    transition: background-color 0.5s ease;
}

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

.service-icon {
    transition: transform 0.3s ease, background-color 0.5s ease;
}

/* ===== Step Cards ===== */
.step-card {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.step-card.revealed {
    opacity: 1;
    transform: translateY(0);
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--color-mint-400);
    transition: width 0.3s ease;
}

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

.navbar-scrolled {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 rgba(10, 22, 40, 0.06);
}

/* ===== Mobile Menu ===== */
.mobile-menu-link {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.4s ease, transform 0.4s ease, color 0.3s ease;
}

.mobile-menu-link.menu-open {
    opacity: 1;
    transform: translateY(0);
}

/* ===== Focus Styles ===== */
input:focus,
textarea:focus,
button:focus {
    outline: none;
}

/* ===== Smooth Image Loading ===== */
img {
    display: block;
    max-width: 100%;
}

/* ===== Responsive Typography ===== */
@media (max-width: 640px) {
    .hero-headline {
        font-size: 2.5rem !important;
    }
    
    .hero-headline span:last-child {
        font-size: 1.75rem !important;
    }
}

/* ===== Print Styles ===== */
@media print {
    nav, .scroll-indicator, #contact-form {
        display: none;
    }
    
    body {
        color: #000;
        background: #fff;
    }
}

/* ===== 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;
    }
}