/* ===== VARIABLES & RESET ===== */
:root {
    --glass-bg: rgba(255, 255, 255, 0.15);
    --glass-border: rgba(255, 255, 255, 0.25);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
    --glass-highlight: rgba(255, 255, 255, 0.1);
    --text-primary: rgba(30, 30, 40, 0.95);
    --text-secondary: rgba(60, 60, 80, 0.85);
    --accent-glow: rgba(50, 120, 200, 0.5);
    --border-color: #e5e7eb;
    --transition: all 0.3s cubic-bezier(0.25, 0.1, 0.25, 1);
}
* { box-sizing: border-box; margin: 0; padding: 0; }

/* ===== BASE & BACKGROUND ===== */
body {
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Roboto, Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    letter-spacing: 0.25px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
    color: var(--text-primary);
    background: var(--dynamic-gradient, linear-gradient(135deg, #a8edea 0%, #fed6e3 100%));
    background-size: 100% 100%;
    background-repeat: no-repeat;
    background-attachment: fixed;
    position: relative;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: radial-gradient(ellipse at 20% 80%, rgba(120, 180, 255, 0.12), transparent 50%),
                radial-gradient(ellipse at 80% 20%, rgba(180, 120, 255, 0.12), transparent 50%),
                radial-gradient(ellipse at 50% 50%, rgba(255, 255, 255, 0.04), transparent 70%);
    pointer-events: none; z-index: -1;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6, p, div, span, label, td, th, input, button, select, textarea {
    font-family: inherit; color: var(--text-primary);
}

/* ===== THEME TOGGLE ===== */
.theme-toggle {
    position: fixed; top: 20px; right: 20px; z-index: 1100;
}
.control-btn {
    width: 44px; height: 44px;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border); border-radius: 12px;
    font-size: 18px; color: var(--text-primary);
    cursor: pointer; display: flex; align-items: center; justify-content: center;
    transition: var(--transition); box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}
.control-btn:hover { background: rgba(255, 255, 255, 0.3); transform: scale(1.05); }

/* ===== HERO SECTION ===== */
.hero-section {
    text-align: center;
    margin: 60px 0 40px;
}
.hero-logo {
    /* Fluid height scaling */
    height: clamp(40px, 8vw, 80px);
    
    /* ✅ Proportional width — never stretch/compress */
    width: auto;
    
    /* ✅ Critical for mobile: never exceed viewport width */
    max-width: 90vw;
    
    /* ✅ Ensure padding/margin don't cause overflow */
    box-sizing: border-box;
    
    /* Centering + spacing */
    display: block;
    margin: 0 auto 16px;
    
    /* Visual polish */
    filter: drop-shadow(0 4px 12px rgba(0,0,0,0.15));
    transition: height 0.2s ease;
}
.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-secondary);
    max-width: 650px;
    margin: 0 auto;
    line-height: 1.6;
}

/* ===== GLASS COMPONENT ===== */
.glass {
    background: var(--glass-bg); backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid var(--glass-border); border-radius: 24px;
    box-shadow: var(--glass-shadow); position: relative; overflow: hidden;
}

/* ===== CARD GRID ===== */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin: 40px 0;
}

/* ===== CARD STYLES ===== */
.card-link {
    text-decoration: none;
    color: inherit;
    display: block;
    transition: var(--transition);
}
.card-link:hover {
    transform: translateY(-4px) scale(1.02);
}

.card {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    overflow: hidden;
    box-shadow: var(--glass-shadow);
    transition: var(--transition);
    aspect-ratio: 1 / 1.1;
    display: flex;
    flex-direction: column;
}
.card:hover {
    background: rgba(255, 255, 255, 0.3);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.2);
}

.card-image {
    width: 100%;
    aspect-ratio: 3 / 1.5;      /* Forces perfect square container */
    object-fit: cover;        /* Crops overflow, never stretches */
    object-position: center;  /* Keeps focal point centered */
    border-bottom: 1px solid var(--glass-border);
    display: block;           /* Removes inline spacing gap */
}


.card-content {
    padding: 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.card-title {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.card-description {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
    flex: 1;
}

.card-badge {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(59, 130, 246, 0.2);
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-top: 12px;
    width: fit-content;
}

/* ===== FOOTER ===== */
.footer {
    text-align: center;
    padding: 40px 20px;
    margin-top: 60px;
    border-top: 1px solid var(--glass-border);
}
.footer-text {
    color: var(--text-secondary);
    font-size: 0.9rem;
    opacity: 0.85;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .hero-logo { height: 52px; }
    .hero-subtitle { font-size: 1rem; padding: 0 16px; }
    .cards-grid { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
    .card { aspect-ratio: 1 / 1.2; }
    .theme-toggle { top: 16px; right: 16px; }
    .control-btn { width: 40px; height: 40px; font-size: 16px; }
}

@media (max-width: 480px) {
    .cards-grid { grid-template-columns: 1fr; }
    .card { aspect-ratio: 1 / 1.1; }
}

/* Disable unnecessary animations */
.glass::before, .buttons::before, .tab-button::after { display: none !important; }