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

:root {
    --bg: #0a0a0f;
    --surface: #13131a;
    --surface-hover: #1a1a24;
    --border: rgba(255, 255, 255, 0.06);
    --border-hover: rgba(255, 255, 255, 0.12);
    --text: #e4e4e7;
    --text-muted: #71717a;
    --text-dim: #52525b;
    --radius: 16px;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    overflow-x: hidden;
    position: relative;
}

/* ===== Background Glows ===== */
.bg-glow {
    position: fixed;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.15;
    pointer-events: none;
    z-index: 0;
}

.bg-glow-1 {
    width: 600px;
    height: 600px;
    background: #4285f4;
    top: -200px;
    left: -100px;
}

.bg-glow-2 {
    width: 500px;
    height: 500px;
    background: #a855f7;
    bottom: -150px;
    right: -100px;
}

/* ===== Header ===== */
header {
    text-align: center;
    padding: 4rem 2rem 2rem;
    position: relative;
    z-index: 1;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
}

.logo-icon {
    font-size: 2rem;
    opacity: 0.6;
    animation: spin 20s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    color: #fff;
}

h1 span {
    background: linear-gradient(135deg, #4285f4, #a855f7);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    color: var(--text-muted);
    font-size: 1rem;
    font-weight: 400;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

/* ===== Main Grid ===== */
main {
    width: 100%;
    max-width: 1100px;
    padding: 2rem;
    position: relative;
    z-index: 1;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 1.25rem;
}

/* ===== Banner Card (Auth) ===== */
.card.card-banner {
    flex-direction: row !important;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 1.5rem;
    margin-bottom: 1.25rem;
    animation: fadeInUp 0.5s ease backwards;
}

.card.card-banner .card-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
}

.card.card-banner .card-icon svg {
    width: 18px;
    height: 18px;
}

.card.card-banner .card-content {
    flex: 1;
}

.card.card-banner .card-content h2 {
    font-size: 0.95rem;
}

.card.card-banner .card-content p {
    font-size: 0.75rem;
}

.card.card-banner .card-domain {
    border-top: none;
    padding-top: 0;
    border-left: 1px solid var(--border);
    padding-left: 1rem;
}

/* ===== Card ===== */
.card {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    text-decoration: none;
    color: var(--text);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(
        600px circle at var(--mouse-x, 50%) var(--mouse-y, 50%),
        rgba(255, 255, 255, 0.03),
        transparent 40%
    );
    opacity: 0;
    transition: opacity 0.3s;
}

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

.card:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
    box-shadow:
        0 8px 32px rgba(0, 0, 0, 0.3),
        0 0 0 1px rgba(255, 255, 255, 0.05);
}

/* ===== Card Icon ===== */
.card-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: color-mix(in srgb, var(--accent) 15%, transparent);
    color: var(--accent);
    transition: all 0.3s ease;
}

.card:hover .card-icon {
    background: color-mix(in srgb, var(--accent) 25%, transparent);
    transform: scale(1.05);
}

.card-icon svg {
    width: 24px;
    height: 24px;
}

/* ===== Card Content ===== */
.card-content h2 {
    font-size: 1.15rem;
    font-weight: 600;
    color: #fff;
    letter-spacing: -0.01em;
}

.card-content p {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 0.15rem;
}

/* ===== Card Domain ===== */
.card-domain {
    font-size: 0.75rem;
    color: var(--text-dim);
    font-family: 'SF Mono', 'Fira Code', monospace;
    padding-top: 0.5rem;
    border-top: 1px solid var(--border);
    transition: color 0.3s;
}

.card:hover .card-domain {
    color: var(--text-muted);
}

/* ===== Footer ===== */
footer {
    margin-top: auto;
    padding: 3rem 2rem 2rem;
    text-align: center;
    position: relative;
    z-index: 1;
}

footer p {
    color: var(--text-dim);
    font-size: 0.8rem;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    header {
        padding: 3rem 1.5rem 1.5rem;
    }

    h1 {
        font-size: 2rem;
    }

    main {
        padding: 1rem;
    }

    .grid {
        grid-template-columns: 1fr 1fr;
        gap: 0.75rem;
    }

    .card {
        padding: 1.25rem;
    }

    .card-icon {
        width: 40px;
        height: 40px;
        border-radius: 10px;
    }

    .card-icon svg {
        width: 20px;
        height: 20px;
    }

    .card-banner {
        margin-bottom: 0.75rem;
    }
}

@media (max-width: 480px) {
    .card-banner {
        flex-direction: column;
        align-items: flex-start;
    }

    .card-banner .card-domain {
        border-left: none;
        padding-left: 0;
        border-top: 1px solid var(--border);
        padding-top: 0.5rem;
    }
    .grid {
        grid-template-columns: 1fr;
    }

    h1 {
        font-size: 1.75rem;
    }
}

/* ===== Animations ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card {
    animation: fadeInUp 0.5s ease backwards;
}

.card:nth-child(1) { animation-delay: 0.05s; }
.card:nth-child(2) { animation-delay: 0.1s; }
.card:nth-child(3) { animation-delay: 0.15s; }
.card:nth-child(4) { animation-delay: 0.2s; }
.card:nth-child(5) { animation-delay: 0.25s; }
.card:nth-child(6) { animation-delay: 0.3s; }
.card:nth-child(7) { animation-delay: 0.35s; }
.card:nth-child(8) { animation-delay: 0.4s; }
.card:nth-child(9) { animation-delay: 0.45s; }