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

:root {
    --primary-bg: #0a0a0c;
    --accent-gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 50%, #ec4899 100%);
    --card-bg: rgba(255, 255, 255, 0.05);
    --card-border: rgba(255, 255, 255, 0.1);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --glass-blur: 12px;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--primary-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Background elements */
.bg-blobs {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.blob {
    position: absolute;
    width: 500px;
    height: 500px;
    background: var(--accent-gradient);
    filter: blur(80px);
    opacity: 0.15;
    border-radius: 50%;
    animation: move 20s infinite alternate;
}

.blob-1 { top: -10%; left: -10%; }
.blob-2 { bottom: -10%; right: -10%; animation-delay: -5s; }

@keyframes move {
    from { transform: translate(0, 0) scale(1); }
    to { transform: translate(10%, 10%) scale(1.1); }
}

header {
    padding: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -1px;
}

.lang-selector {
    display: flex;
    gap: 0.5rem;
}

.lang-btn {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.875rem;
    transition: all 0.3s ease;
    backdrop-filter: blur(var(--glass-blur));
}

.lang-btn:hover {
    border-color: #6366f1;
    color: var(--text-primary);
}

.lang-btn.active {
    background: var(--accent-gradient);
    color: white;
    border: none;
    font-weight: 600;
}

main {
    flex: 1;
    max-width: 800px;
    margin: 0 auto;
    padding: 4rem 2rem;
    text-align: center;
}

.hero h1 {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    letter-spacing: -2px;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.glass-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    backdrop-filter: blur(var(--glass-blur));
    border-radius: 24px;
    padding: 2.5rem;
    margin-bottom: 2rem;
    text-align: left;
    transition: transform 0.3s ease;
}

.glass-card:hover {
    transform: translateY(-5px);
}

h2 {
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.points-list {
    list-style: none;
}

.points-list li {
    margin-bottom: 1rem;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    color: var(--text-secondary);
}

.points-list li::before {
    content: "→";
    color: #6366f1;
    font-weight: bold;
}

.examples {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-top: 3rem;
}

.example-card {
    padding: 1.5rem;
    border-radius: 16px;
    text-align: left;
}

.example-card.bad {
    background: rgba(239, 68, 68, 0.05);
    border: 1px solid rgba(239, 68, 68, 0.1);
}

.example-card.good {
    background: rgba(34, 197, 94, 0.05);
    border: 1px solid rgba(34, 197, 94, 0.1);
}

.example-card h3 {
    margin-bottom: 1rem;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.chat-bubble {
    background: var(--card-bg);
    padding: 0.75rem 1rem;
    border-radius: 12px;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.bad .chat-bubble:nth-child(even) {
    text-align: right;
    background: rgba(255, 255, 255, 0.1);
}

.good .chat-bubble {
    background: rgba(34, 197, 94, 0.1);
}

.copy-section {
    margin-top: 4rem;
}

.btn-primary {
    background: var(--accent-gradient);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.3s ease, transform 0.2s ease;
    font-size: 1rem;
}

.btn-primary:hover {
    opacity: 0.9;
    transform: scale(1.02);
}

.btn-primary:active {
    transform: scale(0.98);
}

footer {
    padding: 3rem 2rem;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.875rem;
    border-top: 1px solid var(--card-border);
}

.attribution {
    margin-top: 1rem;
    font-size: 0.8rem;
    opacity: 0.8;
}

.attribution a {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.attribution a:hover {
    color: #6366f1;
}

@media (max-width: 768px) {
    .hero h1 { font-size: 2.5rem; }
    .examples { grid-template-columns: 1fr; }
    header { padding: 1.5rem; }
}