/* ══════════════════════════════════════════════════════════════════════════════
   [Pillar 3.1 Phase A2] Survey Builder Styles
   Lecturer survey builder modal + module survey student-facing additions
   ══════════════════════════════════════════════════════════════════════════════ */

/* ─── Overlay ────────────────────────────────────────────────────────────── */
.survey-builder-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.survey-builder-overlay.survey-builder-visible {
    opacity: 1;
}

.survey-builder-overlay.survey-builder-exit {
    opacity: 0;
    transition: opacity 0.3s ease;
}

/* ─── Card ───────────────────────────────────────────────────────────────── */
.survey-builder-card {
    background: var(--bg-secondary, #1e1e2e);
    border: 1px solid var(--border-color, rgba(255, 255, 255, 0.1));
    border-radius: 16px;
    width: 90vw;
    max-width: 800px;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

/* ─── Header ─────────────────────────────────────────────────────────────── */
.survey-builder-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color, rgba(255, 255, 255, 0.1));
}

.survey-builder-header h2 {
    margin: 0;
    font-size: 1.3rem;
    color: var(--text-primary, #e0e0e0);
}

.survey-builder-close {
    background: none;
    border: none;
    color: var(--text-secondary, #999);
    font-size: 1.4rem;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 6px;
    transition: background 0.2s;
}

.survey-builder-close:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary, #e0e0e0);
}

/* ─── Body ───────────────────────────────────────────────────────────────── */
.survey-builder-body {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
}

.survey-builder-loading,
.survey-builder-error {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-secondary, #999);
    font-size: 0.95rem;
}

.survey-builder-error {
    color: #ef4444;
}

/* ─── Footer ─────────────────────────────────────────────────────────────── */
.survey-builder-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    padding: 16px 24px;
    border-top: 1px solid var(--border-color, rgba(255, 255, 255, 0.1));
}

/* ─── Buttons ────────────────────────────────────────────────────────────── */
.survey-builder-btn {
    padding: 10px 20px;
    border-radius: 8px;
    border: none;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s;
}

.survey-builder-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.survey-builder-btn-primary {
    background: var(--accent-color, #6366f1);
    color: white;
    font-weight: 600;
}

.survey-builder-btn-primary:hover:not(:disabled) {
    background: var(--accent-hover, #4f46e5);
}

.survey-builder-btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary, #e0e0e0);
}

.survey-builder-btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
}

.survey-builder-btn-add {
    background: rgba(99, 102, 241, 0.15);
    color: var(--accent-color, #6366f1);
    border: 1px dashed var(--accent-color, #6366f1);
    width: 100%;
    padding: 12px;
    margin-top: 12px;
}

.survey-builder-btn-add:hover {
    background: rgba(99, 102, 241, 0.25);
}

.survey-builder-btn-sm {
    padding: 6px 12px;
    font-size: 0.8rem;
    border-radius: 6px;
    margin-top: 8px;
}

/* ─── Sections ───────────────────────────────────────────────────────────── */
.survey-builder-section h3 {
    color: var(--text-primary, #e0e0e0);
    font-size: 1.1rem;
    margin: 0 0 4px 0;
}

.survey-builder-hint {
    color: var(--text-secondary, #999);
    font-size: 0.85rem;
    margin: 0 0 16px 0;
}

.survey-builder-divider {
    border: none;
    border-top: 1px solid var(--border-color, rgba(255, 255, 255, 0.1));
    margin: 24px 0;
}

/* ─── Core Preference Rows ───────────────────────────────────────────────── */
.survey-builder-core-row {
    padding: 12px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.survey-builder-core-label {
    margin-bottom: 8px;
}

.survey-builder-core-label label {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-primary, #e0e0e0);
    font-weight: 500;
    cursor: pointer;
}

.survey-builder-core-controls {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    padding-left: 28px;
}

.survey-builder-core-controls.survey-builder-hidden {
    display: none;
}

.survey-builder-core-default,
.survey-builder-core-editability {
    background: var(--bg-primary, #111);
    color: var(--text-primary, #e0e0e0);
    border: 1px solid var(--border-color, rgba(255, 255, 255, 0.15));
    padding: 6px 10px;
    border-radius: 6px;
    font-size: 0.85rem;
}

.survey-builder-core-reason {
    background: var(--bg-primary, #111);
    color: var(--text-primary, #e0e0e0);
    border: 1px solid var(--border-color, rgba(255, 255, 255, 0.15));
    padding: 6px 10px;
    border-radius: 6px;
    font-size: 0.85rem;
    flex: 1;
    min-width: 200px;
}

/* ─── Custom Questions ───────────────────────────────────────────────────── */
.survey-builder-custom-q {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color, rgba(255, 255, 255, 0.08));
    border-radius: 10px;
    padding: 16px;
    margin-bottom: 12px;
}

.survey-builder-q-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.survey-builder-q-number {
    font-weight: 700;
    color: var(--accent-color, #6366f1);
    font-size: 0.9rem;
}

.survey-builder-delete-q {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.1rem;
    padding: 2px 6px;
    border-radius: 4px;
    transition: background 0.2s;
}

.survey-builder-delete-q:hover {
    background: rgba(239, 68, 68, 0.2);
}

.survey-builder-q-text {
    width: 100%;
    background: var(--bg-primary, #111);
    color: var(--text-primary, #e0e0e0);
    border: 1px solid var(--border-color, rgba(255, 255, 255, 0.15));
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 0.9rem;
    margin-bottom: 8px;
    box-sizing: border-box;
}

.survey-builder-q-row {
    display: flex;
    gap: 12px;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 10px;
}

.survey-builder-q-type {
    background: var(--bg-primary, #111);
    color: var(--text-primary, #e0e0e0);
    border: 1px solid var(--border-color, rgba(255, 255, 255, 0.15));
    padding: 6px 10px;
    border-radius: 6px;
    font-size: 0.85rem;
}

.survey-builder-checkbox {
    display: flex;
    align-items: center;
    gap: 4px;
    color: var(--text-secondary, #999);
    font-size: 0.85rem;
    cursor: pointer;
}

/* ─── Option Rows ────────────────────────────────────────────────────────── */
.survey-builder-option-row {
    display: flex;
    gap: 6px;
    align-items: center;
    margin-bottom: 6px;
}

.survey-builder-opt-label,
.survey-builder-opt-value {
    background: var(--bg-primary, #111);
    color: var(--text-primary, #e0e0e0);
    border: 1px solid var(--border-color, rgba(255, 255, 255, 0.15));
    padding: 6px 8px;
    border-radius: 6px;
    font-size: 0.82rem;
    width: 120px;
    box-sizing: border-box;
}

.survey-builder-opt-prompt {
    background: var(--bg-primary, #111);
    color: var(--text-primary, #e0e0e0);
    border: 1px solid var(--border-color, rgba(255, 255, 255, 0.15));
    padding: 6px 8px;
    border-radius: 6px;
    font-size: 0.82rem;
    flex: 1;
    min-width: 180px;
    box-sizing: border-box;
}

.survey-builder-delete-opt {
    background: none;
    border: none;
    color: var(--text-secondary, #999);
    cursor: pointer;
    font-size: 1rem;
    padding: 2px 4px;
    border-radius: 4px;
    flex-shrink: 0;
}

.survey-builder-delete-opt:hover {
    color: #ef4444;
    background: rgba(239, 68, 68, 0.15);
}

/* ─── Module Survey Card Button (content-manager.js) ─────────────────────── */
.btn-survey-config {
    background: rgba(99, 102, 241, 0.12);
    color: var(--accent-color, #6366f1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 6px;
    padding: 4px 10px;
    font-size: 0.78rem;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.btn-survey-config:hover {
    background: rgba(99, 102, 241, 0.25);
    border-color: rgba(99, 102, 241, 0.5);
}

/* ─── Student Module Survey Additions (extends onboarding.css) ───────────── */
.module-survey-field {
    margin-bottom: 16px;
}

.module-survey-label {
    display: block;
    color: var(--text-primary, #e0e0e0);
    font-weight: 500;
    margin-bottom: 6px;
    font-size: 0.95rem;
}

.module-survey-required {
    color: #ef4444;
}

.module-survey-hint {
    color: var(--text-secondary, #999);
    font-size: 0.82rem;
    margin: 0 0 6px 0;
}

.module-survey-locked-reason {
    color: var(--text-secondary, #999);
    font-size: 0.85rem;
    font-style: italic;
    margin: 0 0 4px 0;
}

.module-survey-locked-value {
    color: var(--text-primary, #e0e0e0);
    font-size: 0.85rem;
    margin: 0;
}

.module-survey-select {
    width: 100%;
    background: var(--bg-primary, #111);
    color: var(--text-primary, #e0e0e0);
    border: 1px solid var(--border-color, rgba(255, 255, 255, 0.15));
    padding: 8px 12px;
    border-radius: 8px;
    font-size: 0.9rem;
}

.module-survey-textarea {
    width: 100%;
    background: var(--bg-primary, #111);
    color: var(--text-primary, #e0e0e0);
    border: 1px solid var(--border-color, rgba(255, 255, 255, 0.15));
    padding: 8px 12px;
    border-radius: 8px;
    font-size: 0.9rem;
    resize: vertical;
    box-sizing: border-box;
}

.module-survey-options {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.module-survey-radio-label,
.module-survey-checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-primary, #e0e0e0);
    font-size: 0.9rem;
    cursor: pointer;
    padding: 6px 10px;
    border-radius: 6px;
    transition: background 0.2s;
}

.module-survey-radio-label:hover,
.module-survey-checkbox-label:hover {
    background: rgba(255, 255, 255, 0.05);
}