/* TET Exam Toolkit - Mobile First Design */

:root {
    --tet-primary: #6366f1;
    /* Indigo */
    --tet-primary-dark: #4f46e5;
    --tet-accent: #f43f5e;
    /* Rose */
    --tet-bg: #f8fafc;
    --tet-card-bg: rgba(255, 255, 255, 0.9);
    --tet-text: #0f172a;
    --tet-text-light: #475569;
    --tet-border: #e2e8f0;
    --tet-success: #10b981;
    --tet-error: #f43f5e;
    --tet-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

.tet-toolkit-container {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    color: var(--tet-text);
    max-width: 850px;
    margin: 30px auto;
    padding: 20px;
    background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
    border-radius: 20px;
    box-shadow: var(--tet-shadow);
}

/* Cards */
.tet-card {
    background: var(--tet-card-bg);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 16px;
    padding: 25px;
    margin-bottom: 25px;
    box-shadow: var(--tet-shadow);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.tet-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

.badge {
    display: inline-block;
    padding: 4px 12px;
    background: var(--tet-primary);
    color: white;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 700;
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Buttons */
.tet-button {
    display: inline-block;
    background: var(--tet-primary);
    color: white !important;
    padding: 12px 24px;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 700;
    text-align: center;
    cursor: pointer;
    border: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 6px -1px rgba(99, 102, 241, 0.4);
}

.tet-button:hover {
    background: var(--tet-primary-dark);
    transform: scale(1.05);
    box-shadow: 0 10px 15px -3px rgba(99, 102, 241, 0.5);
}

.tet-button:disabled {
    background: #cbd5e1;
    cursor: not-allowed;
    box-shadow: none;
    transform: none;
}

/* Quiz UI */
.tet-quiz-question {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.tet-options-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.tet-option-item {
    padding: 12px 15px;
    border: 1px solid var(--tet-border);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
}

.tet-option-item:hover {
    background: #eff6ff;
    border-color: var(--tet-primary);
}

.tet-option-item.selected {
    background: var(--tet-primary);
    color: white;
    border-color: var(--tet-primary);
}

/* PYQ Grid */
.tet-pyq-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

@media (min-width: 600px) {
    .tet-pyq-grid {
        grid-template-columns: 1fr 1fr;
    }
}

/* Progress Bar */
.tet-progress-container {
    height: 10px;
    background: var(--tet-border);
    border-radius: 5px;
    overflow: hidden;
    margin: 15px 0;
}

.tet-progress-bar {
    height: 100%;
    background: var(--tet-success);
    width: 0%;
    transition: width 0.3s ease;
}