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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: #f0f2f5;
    color: #333;
    line-height: 1.6;
}

.container { max-width: 960px; margin: 0 auto; padding: 20px; }

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid #e0e0e0;
}

header h1 { font-size: 1.8rem; color: #1a1a2e; }

a { color: #4361ee; text-decoration: none; }
a:hover { text-decoration: underline; }

.card {
    background: white;
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 20px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.card h2 { margin-bottom: 16px; font-size: 1.2rem; color: #1a1a2e; }

.hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.buttons { display: flex; gap: 12px; margin-top: 16px; }

.btn {
    display: inline-block;
    padding: 10px 24px;
    border-radius: 8px;
    border: none;
    font-size: 1rem;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.2s;
}

.btn-primary { background: #4361ee; color: white; }
.btn-primary:hover { background: #3a56d4; }

.btn-secondary { background: #e0e0e0; color: #333; }
.btn-secondary:hover { background: #ccc; }

.btn-danger { background: #e63946; color: white; }
.btn-danger:hover { background: #c1121f; }

.btn-small { padding: 4px 12px; font-size: 0.85rem; }

.auth-box {
    max-width: 400px;
    margin: 40px auto;
    background: white;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    overflow: hidden;
}

.tabs { display: flex; }
.tab {
    flex: 1;
    padding: 14px;
    border: none;
    background: #f0f2f5;
    cursor: pointer;
    font-size: 1rem;
    transition: background 0.2s;
}
.tab.active { background: white; font-weight: 600; }

.auth-form { padding: 24px; }
.auth-form.hidden { display: none; }

.auth-form input {
    width: 100%;
    padding: 10px 14px;
    margin-bottom: 12px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
}

.error { color: #e63946; font-size: 0.9rem; margin-top: 8px; }
.hidden { display: none; }

.dashboard-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.full-width { grid-column: 1 / -1; }

.model-list { list-style: none; }
.model-list li {
    padding: 8px 0;
    border-bottom: 1px solid #e0e0e0;
    font-size: 0.9rem;
}

.key-list { list-style: none; margin-top: 12px; }
.key-list li {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 0;
    border-bottom: 1px solid #eee;
    font-size: 0.9rem;
}
.key-list code {
    background: #f0f2f5;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.8rem;
    word-break: break-all;
}

.progress-container { max-width: 600px; margin: 0 auto; }

.progress-bar-wrapper {
    width: 100%;
    height: 30px;
    background: #e0e0e0;
    border-radius: 15px;
    overflow: hidden;
    margin: 16px 0;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, #4361ee, #7209b7);
    transition: width 0.3s ease;
    width: 0%;
}

.progress-text {
    text-align: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: #1a1a2e;
}

.progress-details {
    margin-top: 20px;
}

.progress-details p {
    margin: 8px 0;
    font-size: 0.95rem;
}

.session-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 12px;
    border-bottom: 1px solid #eee;
}

.status {
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 0.85rem;
    font-weight: 600;
}

.status-pending { background: #fff3cd; color: #856404; }
.status-downloading { background: #cce5ff; color: #004085; }
.status-completed { background: #d4edda; color: #155724; }
.status-error { background: #f8d7da; color: #721c24; }

select {
    width: 100%;
    padding: 10px 14px;
    margin-bottom: 12px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
    background: white;
}

@media (max-width: 600px) {
    .hero, .dashboard-grid { grid-template-columns: 1fr; }
}