/* ============================================================
   Eğitim Merkezi v2 - ek bileşen stilleri
   exam.css'ten SONRA yüklenir; mevcut sınıfları bozmaz.
   ============================================================ */

:root {
    --ex-primary: #0e3f83;
    --ex-primary-light: #1a5fa8;
    --ex-success: #1e9e5a;
    --ex-success-bg: #e8f7ef;
    --ex-danger: #d9414e;
    --ex-danger-bg: #fdeaec;
    --ex-warning: #d98c00;
    --ex-warning-bg: #fff6e3;
    --ex-muted: #6c757d;
    --ex-border: #e4e8ee;
    --ex-radius: 12px;
}

/* ---------- Genel yardımcılar ---------- */
.ex-badge {
    display: inline-flex; align-items: center; gap: 5px;
    padding: 3px 10px; border-radius: 20px;
    font-size: 0.75rem; font-weight: 600; line-height: 1.4;
    white-space: nowrap;
}
.ex-badge.diff-1 { background: var(--ex-success-bg); color: var(--ex-success); }
.ex-badge.diff-2 { background: #eaf1fb; color: var(--ex-primary); }
.ex-badge.diff-3 { background: var(--ex-danger-bg); color: var(--ex-danger); }
.ex-badge.topic  { background: #f0ebfa; color: #6941c6; }
.ex-badge.source { background: #eef6f8; color: #0f6d80; }
.ex-badge.points { background: #f2f4f7; color: #475467; }
.ex-badge.passive { background: #fdeaec; color: var(--ex-danger); }
.ex-badge.objection { background: var(--ex-warning-bg); color: var(--ex-warning); }
.ex-badge.practice { background: #eaf6f0; color: var(--ex-success); border: 1px solid #bfe6d2; }

/* ---------- Ana sayfa: devam eden sınav bandı ---------- */
.resume-banner {
    display: flex; align-items: center; gap: 15px; flex-wrap: wrap;
    background: linear-gradient(135deg, #fff8ec, #fff3d9);
    border: 1px solid #f2d492;
    border-radius: var(--ex-radius);
    padding: 16px 20px; margin-bottom: 25px;
}
.resume-banner .rb-icon {
    width: 44px; height: 44px; border-radius: 50%; flex: 0 0 44px;
    background: var(--ex-warning); color: #fff;
    display: flex; align-items: center; justify-content: center; font-size: 1.2rem;
}
.resume-banner .rb-text { flex: 1 1 200px; }
.resume-banner .rb-text strong { display: block; color: #7a5800; }
.resume-banner .rb-text span { color: #9a7213; font-size: 0.85rem; }
.resume-banner .rb-btn {
    background: var(--ex-warning); color: #fff !important;
    padding: 10px 18px; border-radius: 8px; font-weight: 600;
    text-decoration: none; white-space: nowrap; transition: 0.2s;
}
.resume-banner .rb-btn:hover { background: #b87700; }

.category-card .cat-count {
    display: inline-block; margin-top: 8px;
    font-size: 0.78rem; font-weight: 600;
    color: var(--ex-primary); background: #eaf1fb;
    padding: 2px 10px; border-radius: 12px;
}
.exam-meta .participants { color: inherit; }

/* ---------- Çözme sayfası: ilerleme + işaretleme + alıştırma ---------- */
.exam-progress-wrap {
    background: #e9edf3; border-radius: 6px; height: 8px;
    margin: 0 0 15px 0; overflow: hidden;
}
.exam-progress-bar {
    height: 100%; width: 0;
    background: linear-gradient(90deg, var(--ex-primary), var(--ex-primary-light));
    border-radius: 6px; transition: width 0.3s ease;
}
.exam-progress-label {
    font-size: 0.8rem; color: var(--ex-muted); text-align: right; margin-bottom: 4px;
}

.practice-pill {
    display: inline-flex; align-items: center; gap: 6px;
    background: var(--ex-success-bg); color: var(--ex-success);
    border: 1px solid #bfe6d2; border-radius: 20px;
    padding: 5px 14px; font-weight: 700; font-size: 0.85rem;
}

.btn-flag {
    background: #fff; border: 1px solid var(--ex-border);
    color: var(--ex-muted); padding: 8px 14px; border-radius: 8px;
    cursor: pointer; font-size: 0.85rem; transition: 0.2s;
}
.btn-flag:hover { border-color: var(--ex-warning); color: var(--ex-warning); }
.btn-flag.flagged { background: var(--ex-warning-bg); border-color: var(--ex-warning); color: var(--ex-warning); }

.question-nav-grid .nav-item.flagged {
    border: 2px solid var(--ex-warning) !important;
    position: relative;
}
.question-nav-grid .nav-item.flagged::after {
    content: ''; position: absolute; top: -4px; right: -4px;
    width: 10px; height: 10px; border-radius: 50%;
    background: var(--ex-warning);
}
.question-nav-grid .nav-item.p-correct { background: var(--ex-success) !important; color: #fff !important; }
.question-nav-grid .nav-item.p-wrong   { background: var(--ex-danger) !important;  color: #fff !important; }

.nav-legend .legend-box.flagged-box { background: #fff; border: 2px solid var(--ex-warning); }

/* Alıştırma modu geri bildirimi */
.practice-feedback {
    border-radius: var(--ex-radius); padding: 16px 18px; margin-top: 15px;
    border: 1px solid; animation: pfIn 0.25s ease;
}
@keyframes pfIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
.practice-feedback.correct { background: var(--ex-success-bg); border-color: #bfe6d2; }
.practice-feedback.wrong   { background: var(--ex-danger-bg); border-color: #f3c2c7; }
.practice-feedback .pf-title {
    font-weight: 700; display: flex; align-items: center; gap: 8px; margin-bottom: 6px;
}
.practice-feedback.correct .pf-title { color: var(--ex-success); }
.practice-feedback.wrong .pf-title   { color: var(--ex-danger); }
.practice-feedback .pf-explanation { color: #444; font-size: 0.92rem; line-height: 1.55; }
.practice-feedback .pf-source {
    margin-top: 8px; font-size: 0.8rem; color: var(--ex-muted); font-style: italic;
}
.option-item.pf-correct { border-color: var(--ex-success) !important; background: var(--ex-success-bg) !important; }
.option-item.pf-wrong   { border-color: var(--ex-danger) !important;  background: var(--ex-danger-bg) !important; }
.option-item.pf-locked  { pointer-events: none; opacity: 0.85; }

/* ---------- Sonuç sayfası ---------- */
.percentile-note {
    margin-top: 10px; font-size: 0.95rem;
    background: rgba(255,255,255,0.18); border-radius: 8px;
    display: inline-block; padding: 6px 16px;
}
.result-practice-note {
    background: var(--ex-success-bg); border: 1px solid #bfe6d2; color: var(--ex-success);
    border-radius: 8px; padding: 10px 16px; margin-top: 12px;
    font-weight: 600; display: inline-block;
}

.breakdown-section {
    background: #fff; border-radius: var(--ex-radius);
    padding: 25px; margin-bottom: 25px;
    box-shadow: 0 2px 8px rgba(14,63,131,0.06);
}
.breakdown-section h3 {
    color: var(--ex-primary); margin-bottom: 18px; font-size: 1.1rem;
    display: flex; align-items: center; gap: 8px;
}
.breakdown-row { margin-bottom: 14px; }
.breakdown-row:last-child { margin-bottom: 0; }
.breakdown-head {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 5px; font-size: 0.9rem;
}
.breakdown-head .bd-name { font-weight: 600; color: #333; }
.breakdown-head .bd-nums { color: var(--ex-muted); font-size: 0.82rem; }
.breakdown-track { background: #edf0f4; border-radius: 6px; height: 10px; overflow: hidden; }
.breakdown-fill { height: 100%; border-radius: 6px; transition: width 0.6s ease; }
.breakdown-fill.good { background: var(--ex-success); }
.breakdown-fill.mid  { background: var(--ex-warning); }
.breakdown-fill.bad  { background: var(--ex-danger); }

/* ---------- Admin: dashboard istatistik kartları ---------- */
.admin-stat-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px; margin-bottom: 25px;
}
.admin-stat-card {
    background: #fff; border-radius: var(--ex-radius); padding: 18px;
    box-shadow: 0 2px 8px rgba(14,63,131,0.06);
    display: flex; align-items: center; gap: 14px;
}
.admin-stat-card .as-icon {
    width: 44px; height: 44px; border-radius: 10px; flex: 0 0 44px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.15rem; color: #fff; background: var(--ex-primary);
}
.admin-stat-card.green .as-icon  { background: var(--ex-success); }
.admin-stat-card.orange .as-icon { background: var(--ex-warning); }
.admin-stat-card.red .as-icon    { background: var(--ex-danger); }
.admin-stat-card.purple .as-icon { background: #6941c6; }
.admin-stat-card .as-value { font-size: 1.4rem; font-weight: 700; color: #222; line-height: 1.1; }
.admin-stat-card .as-label { font-size: 0.78rem; color: var(--ex-muted); }

/* Durum anahtarı (toggle) */
.ex-switch {
    position: relative; display: inline-block; width: 42px; height: 24px; vertical-align: middle;
}
.ex-switch input { opacity: 0; width: 0; height: 0; }
.ex-switch .slider {
    position: absolute; cursor: pointer; inset: 0;
    background: #cfd6df; border-radius: 24px; transition: 0.25s;
}
.ex-switch .slider::before {
    content: ''; position: absolute; height: 18px; width: 18px;
    left: 3px; bottom: 3px; background: #fff; border-radius: 50%;
    transition: 0.25s; box-shadow: 0 1px 3px rgba(0,0,0,0.25);
}
.ex-switch input:checked + .slider { background: var(--ex-success); }
.ex-switch input:checked + .slider::before { transform: translateX(18px); }

/* İkon aksiyon butonları */
.ex-action-btns { display: flex; gap: 6px; flex-wrap: wrap; }
.ex-icon-btn {
    width: 32px; height: 32px; border-radius: 8px; border: 1px solid var(--ex-border);
    background: #fff; color: var(--ex-muted); cursor: pointer;
    display: inline-flex; align-items: center; justify-content: center;
    font-size: 0.85rem; transition: 0.15s; text-decoration: none;
}
.ex-icon-btn:hover { border-color: var(--ex-primary); color: var(--ex-primary); background: #f4f8fd; }
.ex-icon-btn.danger:hover { border-color: var(--ex-danger); color: var(--ex-danger); background: var(--ex-danger-bg); }
.ex-icon-btn.success:hover { border-color: var(--ex-success); color: var(--ex-success); background: var(--ex-success-bg); }

/* ---------- Soru Stüdyosu ---------- */
.studio-toolbar {
    background: #fff; border-radius: var(--ex-radius); padding: 14px 16px;
    box-shadow: 0 2px 8px rgba(14,63,131,0.06);
    display: flex; gap: 10px; flex-wrap: wrap; align-items: center;
    margin-bottom: 18px;
}
.studio-toolbar .st-search {
    flex: 1 1 220px; position: relative;
}
.studio-toolbar .st-search input {
    width: 100%; padding: 9px 12px 9px 34px;
    border: 1px solid var(--ex-border); border-radius: 8px; font-size: 0.9rem;
}
.studio-toolbar .st-search i {
    position: absolute; left: 12px; top: 50%; transform: translateY(-50%);
    color: #aab2bd; font-size: 0.85rem;
}
.studio-toolbar select {
    padding: 9px 10px; border: 1px solid var(--ex-border);
    border-radius: 8px; font-size: 0.88rem; background: #fff; color: #333;
}
.studio-toolbar .st-count { font-size: 0.83rem; color: var(--ex-muted); margin-left: auto; }

.save-order-bar {
    position: sticky; top: 10px; z-index: 50;
    display: none; align-items: center; gap: 12px;
    background: #103e78; color: #fff;
    border-radius: 10px; padding: 10px 16px; margin-bottom: 15px;
    box-shadow: 0 6px 18px rgba(14,63,131,0.35);
}
.save-order-bar.visible { display: flex; }
.save-order-bar button {
    background: #fff; color: var(--ex-primary); border: none;
    padding: 8px 16px; border-radius: 8px; font-weight: 700; cursor: pointer;
}

.question-admin-card { transition: box-shadow 0.15s, opacity 0.2s; }
.question-admin-card.dragging { opacity: 0.5; }
.question-admin-card.drag-over { box-shadow: 0 0 0 2px var(--ex-primary); }
.question-admin-card.passive-q { opacity: 0.6; background: #fafbfc; }
.question-admin-card .drag-handle {
    cursor: grab; color: #b0b8c4; padding: 4px 8px; margin-right: 4px;
}
.question-admin-card .drag-handle:active { cursor: grabbing; }
.q-badges { display: flex; gap: 6px; flex-wrap: wrap; margin: 8px 0 0 0; }

.q-stats {
    margin-top: 12px; padding-top: 12px; border-top: 1px dashed var(--ex-border);
    display: none;
}
.q-stats.visible { display: block; }
.q-stats .qs-summary { font-size: 0.83rem; color: var(--ex-muted); margin-bottom: 8px; }
.q-stats .qs-summary strong { color: #333; }
.q-stats .qs-row { display: flex; align-items: center; gap: 8px; margin-bottom: 4px; font-size: 0.8rem; }
.q-stats .qs-letter { width: 18px; font-weight: 700; color: var(--ex-muted); }
.q-stats .qs-track { flex: 1; background: #edf0f4; height: 8px; border-radius: 4px; overflow: hidden; }
.q-stats .qs-fill { height: 100%; background: #b6c6dd; border-radius: 4px; }
.q-stats .qs-fill.correct { background: var(--ex-success); }
.q-stats .qs-pct { width: 68px; text-align: right; color: var(--ex-muted); }
.success-rate-pill {
    font-size: 0.75rem; font-weight: 700; padding: 3px 10px; border-radius: 12px;
}
.success-rate-pill.high { background: var(--ex-success-bg); color: var(--ex-success); }
.success-rate-pill.mid  { background: var(--ex-warning-bg); color: var(--ex-warning); }
.success-rate-pill.low  { background: var(--ex-danger-bg); color: var(--ex-danger); }

/* ---------- Akıllı içe aktarma ---------- */
.import-tabs {
    display: flex; gap: 6px; margin-bottom: 20px; flex-wrap: wrap;
}
.import-tab {
    padding: 10px 18px; border-radius: 10px 10px 0 0; cursor: pointer;
    background: #eef1f5; color: var(--ex-muted); font-weight: 600; font-size: 0.9rem;
    border: 1px solid var(--ex-border); border-bottom: none;
    display: flex; align-items: center; gap: 8px;
}
.import-tab.active { background: #fff; color: var(--ex-primary); box-shadow: 0 -2px 8px rgba(14,63,131,0.06); }
.import-panel { display: none; }
.import-panel.active { display: block; }

.import-textarea {
    width: 100%; min-height: 320px; font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;
    font-size: 0.83rem; line-height: 1.5; padding: 14px;
    border: 1px solid var(--ex-border); border-radius: 10px; resize: vertical;
    background: #fafbfd;
}
.import-textarea:focus { outline: none; border-color: var(--ex-primary); background: #fff; }

.import-dropzone {
    border: 2px dashed #c3cddc; border-radius: var(--ex-radius);
    padding: 40px 20px; text-align: center; color: var(--ex-muted);
    cursor: pointer; transition: 0.2s; background: #fafbfd;
}
.import-dropzone:hover, .import-dropzone.dragover {
    border-color: var(--ex-primary); background: #f0f6fd; color: var(--ex-primary);
}
.import-dropzone i { font-size: 2.2rem; margin-bottom: 10px; display: block; }

/* AI asistan */
.ai-builder {
    background: linear-gradient(135deg, #f6f1ff, #eef4ff);
    border: 1px solid #ddd0f5; border-radius: var(--ex-radius); padding: 22px;
}
.ai-builder h4 { color: #6941c6; margin-bottom: 6px; display: flex; align-items: center; gap: 8px; }
.ai-builder .ai-sub { color: #7a6f96; font-size: 0.87rem; margin-bottom: 16px; }
.ai-form-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 12px; margin-bottom: 14px;
}
.ai-form-grid label { font-size: 0.8rem; font-weight: 600; color: #555; display: block; margin-bottom: 4px; }
.ai-form-grid input, .ai-form-grid select {
    width: 100%; padding: 9px 10px; border: 1px solid #d6d0e8;
    border-radius: 8px; font-size: 0.88rem; background: #fff;
}
.ai-prompt-out {
    width: 100%; min-height: 180px; font-family: Consolas, monospace; font-size: 0.78rem;
    padding: 12px; border: 1px solid #d6d0e8; border-radius: 10px;
    background: #fff; resize: vertical; line-height: 1.5;
}
.btn-ai {
    background: #6941c6; color: #fff; border: none; border-radius: 8px;
    padding: 10px 20px; font-weight: 700; cursor: pointer; font-size: 0.9rem;
    display: inline-flex; align-items: center; gap: 8px; transition: 0.2s;
}
.btn-ai:hover { background: #5730ab; }
.btn-ai.secondary { background: #fff; color: #6941c6; border: 1px solid #6941c6; }

/* Önizleme */
.preview-summary {
    display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 16px;
}
.preview-pill {
    padding: 8px 16px; border-radius: 10px; font-weight: 700; font-size: 0.88rem;
    display: inline-flex; align-items: center; gap: 8px;
}
.preview-pill.total { background: #eaf1fb; color: var(--ex-primary); }
.preview-pill.ok    { background: var(--ex-success-bg); color: var(--ex-success); }
.preview-pill.err   { background: var(--ex-danger-bg); color: var(--ex-danger); }
.preview-pill.dup   { background: var(--ex-warning-bg); color: var(--ex-warning); }

.preview-item {
    background: #fff; border: 1px solid var(--ex-border); border-radius: 10px;
    padding: 14px 16px; margin-bottom: 10px; display: flex; gap: 12px;
}
.preview-item.has-error { border-color: #f3c2c7; background: #fffafa; }
.preview-item.is-dup { border-color: #f2d492; }
.preview-item input[type=checkbox] { width: 18px; height: 18px; margin-top: 3px; flex: 0 0 18px; cursor: pointer; }
.preview-item .pv-body { flex: 1; min-width: 0; }
.preview-item .pv-q { font-weight: 600; color: #2a2f36; font-size: 0.92rem; margin-bottom: 6px; }
.preview-item .pv-opts { font-size: 0.82rem; color: var(--ex-muted); line-height: 1.6; }
.preview-item .pv-opts .co { color: var(--ex-success); font-weight: 700; }
.preview-item .pv-flags { margin-top: 8px; display: flex; gap: 6px; flex-wrap: wrap; }
.preview-item .pv-msg { font-size: 0.8rem; margin-top: 6px; }
.preview-item .pv-msg.err { color: var(--ex-danger); }
.preview-item .pv-msg.warn { color: var(--ex-warning); }

.import-commit-bar {
    position: sticky; bottom: 15px; z-index: 40;
    background: #103e78; color: #fff; border-radius: 12px;
    padding: 14px 20px; display: flex; align-items: center; gap: 15px;
    box-shadow: 0 8px 24px rgba(14,63,131,0.4); margin-top: 18px;
}
.import-commit-bar .icb-info { flex: 1; font-size: 0.92rem; }
.import-commit-bar button {
    border: none; border-radius: 8px; padding: 10px 22px;
    font-weight: 700; cursor: pointer; font-size: 0.92rem;
}
.import-commit-bar .icb-commit { background: #2ecc71; color: #fff; }
.import-commit-bar .icb-commit:disabled { background: #9fb3cd; cursor: not-allowed; }
.import-commit-bar .icb-cancel { background: transparent; color: #cdd9ea; border: 1px solid #4a6b9a; }

/* Şema referans tablosu */
.schema-table { width: 100%; border-collapse: collapse; font-size: 0.82rem; }
.schema-table th, .schema-table td {
    text-align: left; padding: 7px 10px; border-bottom: 1px solid var(--ex-border);
}
.schema-table th { color: var(--ex-primary); font-weight: 700; background: #f6f9fd; }
.schema-table code { background: #f2f4f7; padding: 1px 6px; border-radius: 4px; font-size: 0.78rem; }
.schema-table .req { color: var(--ex-danger); font-weight: 700; }
.schema-table .opt { color: var(--ex-muted); }

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
    .studio-toolbar { flex-direction: column; align-items: stretch; }
    .studio-toolbar .st-count { margin-left: 0; }
    .import-commit-bar { flex-direction: column; align-items: stretch; text-align: center; }
    .admin-stat-grid { grid-template-columns: repeat(2, 1fr); }
    .resume-banner { flex-direction: column; align-items: flex-start; }
    .resume-banner .rb-btn { width: 100%; text-align: center; }
    .ai-form-grid { grid-template-columns: 1fr; }
}