:root {
    --bg-dark: #0a0c14;
    --card-bg: rgba(255, 255, 255, 0.04);
    --card-border: rgba(255, 255, 255, 0.08);
    --card-hover-border: rgba(99, 102, 241, 0.4);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-indigo: #6366f1;
    --accent-purple: #a855f7;
    --accent-cyan: #06b6d4;
    --accent-emerald: #10b981;
    --gradient-hero: linear-gradient(135deg, #6366f1 0%, #a855f7 50%, #ec4899 100%);
    --font-main: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-code: 'Space Grotesk', monospace;
    --radius-lg: 24px;
    --radius-md: 14px;
    --radius-sm: 8px;
    --shadow-glow: 0 10px 40px -10px rgba(99, 102, 241, 0.35);
}

[data-theme="alt"] {
    --gradient-hero: linear-gradient(135deg, #06b6d4 0%, #3b82f6 50%, #8b5cf6 100%);
    --accent-indigo: #06b6d4;
    --shadow-glow: 0 10px 40px -10px rgba(6, 182, 212, 0.35);
}

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

body {
    font-family: var(--font-main);
    background-color: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow-x: hidden;
    position: relative;
    padding: 2rem 1rem;
}

/* Canvas Background */
#particles-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    z-index: 1;
}

/* Background Blobs */
.bg-mesh {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    z-index: 0;
}

.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(90px);
    opacity: 0.4;
    animation: floatBlob 18s ease-in-out infinite alternate;
}

.blob-1 {
    width: 450px;
    height: 450px;
    background: #6366f1;
    top: -10%;
    left: -10%;
}

.blob-2 {
    width: 500px;
    height: 500px;
    background: #a855f7;
    bottom: -15%;
    right: -10%;
    animation-delay: -5s;
}

.blob-3 {
    width: 350px;
    height: 350px;
    background: #06b6d4;
    top: 40%;
    left: 60%;
    animation-delay: -10s;
}

@keyframes floatBlob {
    0% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(60px, 40px) scale(1.1); }
    100% { transform: translate(-40px, 80px) scale(0.95); }
}

/* Main Container */
.container {
    position: relative;
    z-index: 2;
    max-width: 780px;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
}

/* Status Badge */
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.5rem 1.25rem;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    border-radius: 9999px;
    backdrop-filter: blur(12px);
    font-size: 0.9rem;
    color: #6ee7b7;
    box-shadow: 0 4px 20px rgba(16, 185, 129, 0.15);
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background-color: #10b981;
    border-radius: 50%;
    box-shadow: 0 0 10px #10b981;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
    70% { transform: scale(1); box-shadow: 0 0 0 10px rgba(16, 185, 129, 0); }
    100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

/* Hero Header */
.hero-header {
    text-align: center;
    max-width: 600px;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 1rem;
}

.gradient-text {
    background: var(--gradient-hero);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
    filter: drop-shadow(0 4px 20px rgba(168, 85, 247, 0.3));
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Glass Cards */
.glass-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-radius: var(--radius-lg);
    padding: 2rem;
    width: 100%;
    transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.glass-card:hover {
    border-color: var(--card-hover-border);
    box-shadow: var(--shadow-glow);
}

.main-card {
    display: flex;
    flex-direction: column;
    gap: 1.8rem;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--card-border);
}

.tech-tag {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--accent-indigo);
    font-weight: 600;
    font-size: 0.95rem;
}

.live-clock {
    font-family: var(--font-code);
    color: var(--text-secondary);
    font-size: 0.9rem;
    background: rgba(255, 255, 255, 0.05);
    padding: 0.3rem 0.8rem;
    border-radius: var(--radius-sm);
}

/* Metrics Grid */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 1rem;
}

.metric-item {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.04);
    padding: 1rem;
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.metric-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.metric-value {
    font-family: var(--font-code);
    font-size: 1.1rem;
    font-weight: 700;
}

.metric-value.highlight {
    color: var(--accent-indigo);
}

.metric-value.status-ok {
    color: var(--accent-emerald);
}

/* Interactive Section */
.interactive-section {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.interactive-section h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.input-group {
    display: flex;
    gap: 0.75rem;
}

.input-group input {
    flex: 1;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-sm);
    padding: 0.75rem 1rem;
    color: #fff;
    font-family: var(--font-main);
    font-size: 0.95rem;
    outline: none;
    transition: border-color 0.2s ease;
}

.input-group input:focus {
    border-color: var(--accent-indigo);
}

.greeting-output {
    background: linear-gradient(90deg, rgba(99, 102, 241, 0.15), rgba(168, 85, 247, 0.15));
    border: 1px solid rgba(168, 85, 247, 0.3);
    padding: 0.85rem 1.2rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    color: #f1f5f9;
    display: flex;
    align-items: center;
    justify-content: space-between;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(5px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Feature Cards Grid */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    width: 100%;
}

.feature-card {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.icon-wrapper {
    font-size: 2rem;
}

.feature-card h3 {
    font-size: 1.2rem;
}

.feature-card p {
    font-size: 0.92rem;
    color: var(--text-secondary);
    line-height: 1.5;
    flex: 1;
}

.card-footer {
    margin-top: 0.5rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font-main);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-primary {
    background: var(--gradient-hero);
    color: #fff;
    padding: 0.75rem 1.4rem;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.45);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.2);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
}

/* Footer */
.main-footer {
    color: var(--text-secondary);
    font-size: 0.85rem;
    text-align: center;
    margin-top: 1rem;
    opacity: 0.7;
}

@media (max-width: 640px) {
    .hero-title {
        font-size: 2.8rem;
    }
    .input-group {
        flex-direction: column;
    }
}