:root {
    --card-bg: var(--bg-color);
    --border-color: var(--sidebar-border);
}

.container {
    max-width: 1000px;
    margin: 100px auto 50px;
    padding: 0 20px;
}

.hero {
    text-align: center;
    margin-bottom: 50px;
}

.hero h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--primary-navy), var(--primary-sky));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-muted);
}

.generator-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 30px;
}

/* Cards */
.input-card, .settings-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 30px;
    box-shadow: var(--shadow-md);
}

/* Tabs */
.tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
}

.tab-btn {
    background: none;
    border: none;
    padding: 10px 20px;
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
    transition: var(--transition);
    border-radius: 8px;
}

.tab-btn.active {
    background: var(--hover-bg);
    color: var(--primary-navy);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* Upload Zone */
.upload-zone {
    border: 2px dashed var(--border-color);
    border-radius: 12px;
    padding: 40px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
}

.upload-zone:hover, .upload-zone.drag-over {
    border-color: var(--primary-sky);
    background: rgba(0, 180, 216, 0.05);
}

.upload-zone svg {
    margin-bottom: 15px;
    color: var(--primary-sky);
}

/* Text Input */
#text-input {
    width: 100%;
    height: 250px;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 15px;
    background: var(--sidebar-bg);
    color: var(--text-color);
    resize: none;
    font-family: inherit;
    font-size: 1rem;
}

/* Settings */
.settings-card h3 {
    margin-bottom: 25px;
    font-size: 1.2rem;
}

.setting-item {
    margin-bottom: 20px;
}

.setting-item label {
    display: block;
    margin-bottom: 10px;
    font-weight: 600;
    font-size: 0.9rem;
}

.number-input {
    display: flex;
    align-items: center;
    gap: 10px;
}

.num-btn {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    background: var(--sidebar-bg);
    cursor: pointer;
    font-size: 1.2rem;
}

#q-count {
    width: 60px;
    height: 40px;
    text-align: center;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    background: var(--bg-color);
    color: var(--text-color);
}

#q-level {
    width: 100%;
    height: 40px;
    padding: 0 10px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    background: var(--bg-color);
    color: var(--text-color);
}

.generate-main-btn {
    width: 100%;
    padding: 15px;
    background: var(--primary-gradient);
    color: white;
    border: none;
    border-radius: 12px;
    font-weight: 700;
    font-size: 1.1rem;
    cursor: pointer;
    margin-top: 20px;
    box-shadow: 0 10px 20px rgba(26, 35, 126, 0.2);
    transition: var(--transition);
    display: flex;
    justify-content: center;
    align-items: center;
}

.generate-main-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 25px rgba(26, 35, 126, 0.3);
}

.generate-main-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

/* Status Messages */
.status-msg {
    margin-top: 15px;
    font-size: 0.9rem;
    font-weight: 500;
}

.status-msg.success { color: #10b981; }
.status-msg.error { color: #ef4444; }

/* Loader */
.loader-dots {
    display: flex;
    gap: 5px;
    margin-left: 10px;
}

.loader-dots span {
    width: 8px;
    height: 8px;
    background: white;
    border-radius: 50%;
    animation: bounce 0.5s infinite alternate;
}

.loader-dots span:nth-child(2) { animation-delay: 0.2s; }
.loader-dots span:nth-child(3) { animation-delay: 0.4s; }

@keyframes bounce {
    from { transform: translateY(0); opacity: 0.5; }
    to { transform: translateY(-5px); opacity: 1; }
}

/* Responsive */
@media (max-width: 768px) {
    .generator-grid {
        grid-template-columns: 1fr;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
}