/* ===== Common CSS — shared across all Chata pages ===== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* --- CSS Variables --- */
:root {
    --chata-blue: #3366ff;
    --chata-blue-light: #4d7cff;
    --chata-blue-dark: #1a4dcc;
}

/* --- Reset --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* --- Body --- */
body {
    font-family: 'Inter', sans-serif;
    background: #000000;
    color: #ffffff;
    overflow-x: hidden;
    font-weight: 300;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    min-height: 100vh;
    position: relative;
}

/* Global subtle blur overlay */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(1px);
    z-index: 1;
    pointer-events: none;
}

/* --- Navigation --- */
.glass-nav {
    backdrop-filter: none;
    background: transparent;
    border: none;
}

.navigation {
    opacity: 0;
    transform: translateY(-50px);
    animation: slideDown 1s ease-out forwards;
    position: relative;
    z-index: 15;
}

.nav-item {
    position: relative;
    transition: all 0.3s ease;
}

.nav-item:hover {
    color: var(--chata-blue);
}

.nav-item::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--chata-blue);
    transition: width 0.3s ease;
}

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

.logo-blue {
    color: #3366ff;
}

.cta-button {
    background: linear-gradient(135deg, var(--chata-blue) 0%, var(--chata-blue-light) 100%);
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(51, 102, 255, 0.3);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(51, 102, 255, 0.4);
}

/* --- Interactive Grid Background --- */
.interactive-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 600%;
    z-index: -1;
    background: #000000;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    background-attachment: scroll;
    transition: all 0.3s ease;
}

.grid-cell {
    position: absolute;
    width: 50px;
    height: 50px;
    border: 1px solid rgba(51, 102, 255, 0.1);
    transition: all 0.6s ease;
    pointer-events: auto;
    background: transparent;
}

.grid-cell:hover,
.grid-cell.active {
    background: radial-gradient(circle, rgba(51, 102, 255, 0.4) 0%, rgba(51, 102, 255, 0.2) 50%, transparent 70%);
    border-color: var(--chata-blue);
    box-shadow: 0 0 25px rgba(51, 102, 255, 0.5);
    transform: scale(1.05);
}

/* --- Alert / Flash Messages --- */
.alert {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #ef4444;
    padding: 1rem;
    border-radius: 10px;
    margin: 1rem 0;
    text-align: center;
    position: relative;
    z-index: 20;
}

.alert-success {
    background: rgba(34, 197, 94, 0.1);
    border-color: rgba(34, 197, 94, 0.3);
    color: #22c55e;
    position: relative;
    z-index: 20;
}

/* --- Footer --- */
.site-footer {
    margin-top: 60px;
    background: rgba(0, 0, 0, 0.9);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 40px 0 20px 0;
    position: relative;
    z-index: 15;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    align-items: start;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.footer-logo {
    font-size: 2rem;
    font-weight: 700;
    color: #3366ff;
    text-decoration: none;
}

.footer-description {
    color: rgba(255, 255, 255, 0.7);
    font-size: 1rem;
    line-height: 1.6;
    max-width: 300px;
    text-transform: uppercase;
}

.footer-section h3 {
    color: #fff;
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 15px;
    letter-spacing: 0.1em;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 0.95rem;
    display: block;
    margin-bottom: 8px;
    transition: color 0.3s ease;
    text-transform: none;
}

.footer-section a:hover {
    color: #3366ff;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
    line-height: 1.4;
    text-transform: none;
}

.contact-item i {
    color: #3366ff;
    width: 16px;
    height: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    line-height: 1;
    margin-top: 0.2em;
}

.contact-item a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s ease;
    text-transform: none;
}

.contact-item a:hover {
    color: #3366ff;
}

.footer-bottom {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
    text-transform: none;
}

/* --- Animations --- */
@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* --- Responsive: Footer --- */
@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}