:root {
    --bg-dark: #0f172a;
    --bg-darker: #020617;
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --accent: #8b5cf6;
    --accent-hover: #7c3aed;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-darker);
    color: var(--text-main);
    overflow-x: hidden;
    line-height: 1.6;
}

h1, h2, h3, .number-display, .logo {
    font-family: 'Outfit', sans-serif;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Background Effects */
.background-effects {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    overflow: hidden;
}

.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.6;
    animation: float 20s infinite alternate cubic-bezier(0.4, 0, 0.2, 1);
}

.blob-1 {
    top: -10%;
    left: -10%;
    width: 50vw;
    height: 50vw;
    background: rgba(59, 130, 246, 0.4);
    max-width: 600px;
    max-height: 600px;
}

.blob-2 {
    bottom: -10%;
    right: -10%;
    width: 60vw;
    height: 60vw;
    background: rgba(139, 92, 246, 0.4);
    max-width: 700px;
    max-height: 700px;
    animation-delay: -10s;
}

@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(50px, 50px) scale(1.1); }
}

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.2rem 5%;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--glass-border);
}

.logo {
    font-size: 1.5rem;
    font-weight: 900;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: white;
}

.logo-icon {
    color: var(--primary);
    animation: pulse 2s infinite alternate;
}

@keyframes pulse {
    0% { filter: drop-shadow(0 0 5px var(--primary)); }
    100% { filter: drop-shadow(0 0 15px var(--primary)); }
}

.navbar nav ul {
    list-style: none;
    display: flex;
    gap: 2rem;
}

.navbar nav a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 600;
    transition: color 0.3s;
}

.navbar nav a:hover {
    color: var(--primary);
}

/* Buttons */
button, a.btn-primary, a.btn-secondary {
    cursor: pointer;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    font-family: 'Inter', sans-serif;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-primary-small {
    padding: 0.6rem 1.2rem;
    background: var(--primary);
    color: white;
    font-size: 0.9rem;
}

.btn-primary-small:hover { 
    background: var(--primary-hover); 
    transform: translateY(-1px);
}

.btn-primary {
    padding: 0.8rem 1.8rem;
    background: var(--primary);
    color: white;
    font-size: 1rem;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.6);
}

.btn-secondary {
    padding: 0.8rem 1.8rem;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    font-size: 1rem;
    backdrop-filter: blur(5px);
    border: 1px solid var(--glass-border);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
}

.btn-glass {
    padding: 0.8rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: white;
    flex: 1;
}

.btn-glass:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-1px);
}

.btn-gradient {
    padding: 0.8rem;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    flex: 2;
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.4);
}

.btn-gradient:hover:not(:disabled) {
    box-shadow: 0 6px 20px rgba(139, 92, 246, 0.6);
    transform: scale(1.02) translateY(-1px);
}

.btn-gradient:disabled, .btn-glass:disabled {
    background: rgba(255,255,255,0.05);
    color: var(--text-muted);
    box-shadow: none;
    cursor: not-allowed;
    transform: none;
    opacity: 0.5;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 5%;
    padding-top: 80px;
    gap: 4rem;
}

.hero-content {
    flex: 1;
    z-index: 10;
}

.badge {
    display: inline-block;
    padding: 0.4rem 1rem;
    background: rgba(59, 130, 246, 0.15);
    border: 1px solid rgba(59, 130, 246, 0.3);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    color: #60a5fa;
    margin-bottom: 1.5rem;
    animation: driftIn 0.8s ease-out;
}

@keyframes driftIn {
    0% { opacity: 0; transform: translateY(20px); }
    100% { opacity: 1; transform: translateY(0); }
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    line-height: 1.1;
    margin-bottom: 1.5rem;
    animation: driftIn 0.9s ease-out;
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    max-width: 500px;
    animation: driftIn 1s ease-out;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    animation: driftIn 1.1s ease-out;
}

/* Glass Panel */
.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    box-shadow: var(--glass-shadow);
}

/* Generator Card UI */
.hero-visual {
    flex: 1;
    display: flex;
    justify-content: center;
    perspective: 1000px;
    z-index: 10;
}

.generator-card {
    width: 100%;
    max-width: 450px;
    padding: 2.2rem;
    transform: rotateY(-8deg) rotateX(8deg);
    transition: transform 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.5s;
}

.generator-card:hover {
    transform: rotateY(0) rotateX(0);
    box-shadow: 0 15px 40px 0 rgba(0, 0, 0, 0.4);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.card-header h2 {
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.status-indicator {
    font-size: 0.85rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #ef4444;
    box-shadow: 0 0 8px #ef4444;
    transition: all 0.3s;
}

.dot.ready {
    background: #10b981;
    box-shadow: 0 0 8px #10b981;
}

.display-screen {
    background: rgba(0, 0, 0, 0.5);
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    margin-bottom: 1.5rem;
    border: 1px inset rgba(255,255,255,0.05);
    box-shadow: inset 0 4px 15px rgba(0,0,0,0.5);
    min-height: 140px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.number-display {
    font-size: clamp(3rem, 15vw, 4.5rem);
    font-weight: 900;
    color: white;
    text-shadow: 0 0 20px rgba(255,255,255,0.5);
    letter-spacing: 2px;
    transition: all 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    word-break: break-all;
    line-height: 1.1;
}

.controls-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.input-group label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 0.4rem;
}

.input-group input {
    width: 100%;
    padding: 0.8rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 8px;
    color: white;
    font-family: 'Outfit', sans-serif;
    font-size: 1.1rem;
    transition: all 0.3s;
}

.input-group input:focus {
    outline: none;
    border-color: var(--primary);
    background: rgba(255, 255, 255, 0.1);
}

.action-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stats-footer {
    display: flex;
    justify-content: space-between;
    padding-top: 1rem;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.stat-val {
    font-size: 1.1rem;
    font-weight: 700;
    font-family: 'Outfit', sans-serif;
    color: var(--primary);
}

/* Features Section */
.features {
    padding: 6rem 5%;
    position: relative;
    z-index: 10;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.section-header p {
    color: var(--text-muted);
    font-size: 1.1rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2.5rem;
}

.feature-card {
    padding: 2.5rem;
    text-align: left;
    transition: all 0.3s ease;
    border: 1px solid rgba(255,255,255,0.05);
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: rgba(139, 92, 246, 0.4);
    box-shadow: 0 15px 30px rgba(0,0,0,0.4);
}

.feature-icon {
    width: 65px;
    height: 65px;
    background: rgba(59, 130, 246, 0.1);
    color: var(--primary);
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    transition: transform 0.3s;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
}

.feature-card h3 {
    margin-bottom: 1rem;
    font-size: 1.4rem;
}

.feature-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Footer */
footer {
    text-align: center;
    padding: 3rem 5%;
    border-top: 1px solid rgba(255,255,255,0.05);
    color: var(--text-muted);
    position: relative;
    z-index: 10;
}

/* Responsive */
@media (max-width: 900px) {
    .navbar nav ul {
        display: none; /* simple mobile nav hide */
    }
    .hero {
        flex-direction: column;
        padding-top: 120px;
        text-align: center;
    }
    .hero-subtitle {
        margin: 0 auto 2.5rem auto;
    }
    .hero-actions {
        justify-content: center;
    }
    .generator-card {
        transform: none;
    }
}