/* written-exam/css/written-exam.css
   Mobile-first design, green/blue accent theme */

:root {
    --we-primary: #16a34a;       /* green */
    --we-primary-dark: #15803d;
    --we-accent: #2563eb;        /* blue */
    --we-danger: #dc2626;
    --we-bg: #f8faf9;
    --we-card-bg: #ffffff;
    --we-border: #e2e8e5;
    --we-text: #1f2937;
    --we-text-muted: #6b7280;
    --we-radius: 12px;
    --we-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: "Segoe UI", "Noto Sans Bengali", system-ui, sans-serif;
    background: var(--we-bg);
    color: var(--we-text);
    -webkit-tap-highlight-color: transparent;
}

/* ===== Header ===== */
.we-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: var(--we-primary);
    color: #fff;
    position: sticky;
    top: 0;
    z-index: 10;
}
.we-header h1 { font-size: 1.1rem; margin: 0; }
.we-back {
    color: #fff;
    text-decoration: none;
    font-size: 0.95rem;
    opacity: 0.9;
}

/* ===== Container ===== */
.we-container {
    max-width: 700px;
    margin: 0 auto;
    padding: 16px;
}

/* ===== Exam List Cards ===== */
.we-exam-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
}
.we-exam-card {
    background: var(--we-card-bg);
    border: 1px solid var(--we-border);
    border-radius: var(--we-radius);
    padding: 16px;
    box-shadow: var(--we-shadow);
}
.we-exam-title { margin: 0 0 6px; font-size: 1.05rem; color: var(--we-primary-dark); }
.we-exam-meta { margin: 2px 0; font-size: 0.88rem; color: var(--we-text-muted); }

/* ===== Buttons ===== */
.we-btn {
    display: inline-block;
    padding: 12px 20px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
    min-height: 46px; /* touch-friendly */
}
.we-btn-primary { background: var(--we-primary); color: #fff; }
.we-btn-primary:active { background: var(--we-primary-dark); }
.we-btn-secondary { background: #e5e7eb; color: var(--we-text); }
.we-btn-start { background: var(--we-accent); color: #fff; width: 100%; margin-top: 8px; }
.we-btn-submit { background: var(--we-danger); color: #fff; width: 100%; margin: 20px 0 40px; }
.we-block-btn { display: block; width: 100%; margin-top: 16px; }

/* ===== Entry Screen ===== */
.we-entry-wrap {
    max-width: 420px;
    margin: 40px auto;
    padding: 24px;
    background: var(--we-card-bg);
    border-radius: var(--we-radius);
    box-shadow: var(--we-shadow);
}
.we-entry-title { margin: 0 0 6px; color: var(--we-primary-dark); font-size: 1.2rem; }
.we-entry-meta { color: var(--we-text-muted); font-size: 0.9rem; margin-bottom: 18px; }

.we-form-group { margin-bottom: 16px; }
.we-form-group label { display: block; margin-bottom: 6px; font-size: 0.9rem; font-weight: 600; }
.we-form-group input,
.we-form-group select {
    width: 100%;
    padding: 12px;
    font-size: 1rem;
    border: 1px solid var(--we-border);
    border-radius: 8px;
    background: #fff;
}
.we-form-group input:focus,
.we-form-group select:focus {
    outline: none;
    border-color: var(--we-accent);
}

.we-error {
    color: var(--we-danger);
    background: #fef2f2;
    border: 1px solid #fecaca;
    padding: 10px;
    border-radius: 8px;
    font-size: 0.88rem;
    white-space: pre-line;
}

/* ===== Exam Screen ===== */
.we-exam-top {
    position: sticky;
    top: 0;
    background: var(--we-bg);
    padding: 10px 16px;
    z-index: 5;
    border-bottom: 1px solid var(--we-border);
}
.we-timer {
    font-weight: 700;
    color: var(--we-danger);
    font-size: 1rem;
    margin-bottom: 8px;
    text-align: center;
}
.we-navigator {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    justify-content: center;
}
.we-nav-btn {
    width: 34px;
    height: 34px;
    border-radius: 6px;
    border: 1px solid var(--we-border);
    background: #fff;
    font-size: 0.85rem;
    cursor: pointer;
}
.we-nav-answered {
    background: var(--we-primary);
    color: #fff;
    border-color: var(--we-primary);
}

.we-questions-container { padding: 16px; }
.we-question-block {
    background: var(--we-card-bg);
    border: 1px solid var(--we-border);
    border-radius: var(--we-radius);
    padding: 14px;
    margin-bottom: 14px;
}
.we-question-number { font-size: 0.85rem; color: var(--we-text-muted); margin: 0 0 6px; }
.we-question-marks { color: var(--we-accent); }
.we-question-text { font-size: 1rem; margin: 0 0 12px; line-height: 1.5; }

.we-answer-row { display: flex; gap: 8px; align-items: center; }
.we-answer-input {
    flex: 1;
    padding: 12px;
    font-size: 1rem;
    border: 1px solid var(--we-border);
    border-radius: 8px;
}
.we-answer-input:disabled { background: #f3f4f6; color: var(--we-text-muted); }

.we-tick-btn, .we-edit-btn {
    flex-shrink: 0;
    width: 42px;
    height: 42px;
    border-radius: 8px;
    border: none;
    font-size: 1.1rem;
    cursor: pointer;
}
.we-tick-btn { background: var(--we-primary); color: #fff; }
.we-edit-btn { background: var(--we-accent); color: #fff; }

/* ===== Submit Modal ===== */
.we-modal {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 50;
    padding: 16px;
}
.we-modal-box {
    background: #fff;
    border-radius: var(--we-radius);
    padding: 20px;
    max-width: 360px;
    width: 100%;
}
.we-modal-box p { white-space: pre-line; margin: 0 0 16px; }
.we-modal-actions { display: flex; gap: 10px; }
.we-modal-actions .we-btn { flex: 1; }

/* ===== Result Page ===== */
.we-result-box {
    background: var(--we-card-bg);
    border-radius: var(--we-radius);
    padding: 20px;
    box-shadow: var(--we-shadow);
}
.we-result-name { font-size: 1rem; margin-bottom: 14px; }
.we-result-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-bottom: 16px;
}
.we-result-item {
    background: #f3f4f6;
    border-radius: 8px;
    padding: 10px;
    text-align: center;
}
.we-result-correct { background: #dcfce7; }
.we-result-wrong { background: #fee2e2; }
.we-result-label { display: block; font-size: 0.78rem; color: var(--we-text-muted); }
.we-result-value { display: block; font-size: 1.2rem; font-weight: 700; }
.we-result-summary { border-top: 1px solid var(--we-border); padding-top: 14px; }
.we-result-summary p { margin: 4px 0; }
.we-result-percentage { font-size: 1.3rem; color: var(--we-primary-dark); font-weight: 700; }

/* ===== Review Page ===== */
.we-review-summary { margin-bottom: 14px; font-size: 0.95rem; }
.we-text-correct { color: var(--we-primary-dark); }
.we-text-wrong { color: var(--we-danger); }
.we-review-block {
    background: var(--we-card-bg);
    border-left: 5px solid var(--we-border);
    border-radius: 8px;
    padding: 14px;
    margin-bottom: 12px;
    box-shadow: var(--we-shadow);
}
.we-review-correct { border-left-color: var(--we-primary); }
.we-review-wrong { border-left-color: var(--we-danger); }
.we-review-skipped { border-left-color: #9ca3af; }
.we-review-qnum { font-size: 0.8rem; color: var(--we-text-muted); margin: 0 0 4px; }
.we-review-question { font-weight: 600; margin: 0 0 8px; }
.we-review-your-answer, .we-review-correct-answer { margin: 4px 0; font-size: 0.92rem; }
.we-review-explanation {
    background: #f0fdf4;
    border-left: 3px solid var(--we-primary);
    padding: 8px 10px;
    margin: 8px 0;
    font-size: 0.88rem;
    border-radius: 4px;
}
.we-review-status { margin-top: 8px; font-weight: 700; font-size: 0.9rem; }

/* ===== Admin ===== */
.we-admin-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}
.we-admin-top h1 { font-size: 1.1rem; margin: 0; }
.we-filter-box {
    background: var(--we-card-bg);
    border-radius: var(--we-radius);
    padding: 16px;
    box-shadow: var(--we-shadow);
    margin-bottom: 16px;
}
.we-total-participants { font-weight: 600; margin-bottom: 10px; }

.we-scoreboard-table {
    width: 100%;
    border-collapse: collapse;
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    font-size: 0.85rem;
}
.we-scoreboard-table th, .we-scoreboard-table td {
    padding: 8px 6px;
    text-align: center;
    border-bottom: 1px solid var(--we-border);
}
.we-scoreboard-table th { background: var(--we-primary); color: #fff; }

/* ===== Utility ===== */
.we-loading, .we-empty {
    text-align: center;
    color: var(--we-text-muted);
    padding: 30px 10px;
}

/* ===== Tablet/Desktop ===== */
@media (min-width: 640px) {
    .we-exam-grid { grid-template-columns: 1fr 1fr; }
    .we-result-grid { grid-template-columns: repeat(5, 1fr); }
    .we-nav-btn { width: 38px; height: 38px; }
}
/* ===== PDF Render Area (হিডেন, শুধু html2canvas ক্যাপচারের জন্য) ===== */
.we-pdf-render-area {
    position: fixed;
    left: -9999px;
    top: 0;
    width: 750px;
    background: #fff;
    padding: 20px;
    font-family: 'Noto Sans Bengali', 'Segoe UI', sans-serif;
    color: #111;
}
.we-pdf-render-area h2 { font-size: 20px; margin: 0 0 6px; }
.we-pdf-render-area .we-pdf-meta { font-size: 12px; color: #555; margin: 0 0 14px; }
.we-pdf-render-area table { width: 100%; border-collapse: collapse; font-size: 13px; }
.we-pdf-render-area th, .we-pdf-render-area td {
    border: 1px solid #ccc; padding: 6px 8px; text-align: left; vertical-align: top;
}
.we-pdf-render-area th { background: #16a34a; color: #fff; }
/* ===== Status Badges ===== */
.we-badge {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 12px;
    margin-left: 6px;
    vertical-align: middle;
}
.we-badge-locked { background: #fee2e2; color: #b91c1c; }
.we-badge-archive { background: #e0e7ff; color: #3730a3; }

.we-locked-btn {
    background: #9ca3af;
    cursor: pointer;
    border: none;
}