/* Shared layout, nav, and compact buttons for Bulk Quiz Upload */
* { box-sizing: border-box; }

body {
    font-family: 'Segoe UI', Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: #f0f2f5;
    color: #333;
}

.page-body {
    max-width: 1800px;
    margin: 0 auto;
    padding: 16px;
}

.page-card {
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
    padding: 20px;
}

.page-title {
    margin: 0 0 16px;
    font-size: 1.35rem;
    color: #1a237e;
    font-weight: 600;
}

/* Top navigation */
.app-header {
    background: linear-gradient(135deg, #1565c0 0%, #0d47a1 100%);
    color: #fff;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.app-header-inner {
    max-width: 1800px;
    margin: 0 auto;
    padding: 0 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 52px;
}

.brand {
    color: #fff;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.05rem;
    white-space: nowrap;
    padding: 8px 0;
}

.brand:hover { color: #e3f2fd; }

.nav-toggle {
    display: none;
    background: transparent;
    border: 1px solid rgba(255,255,255,0.5);
    color: #fff;
    font-size: 1.25rem;
    padding: 4px 10px;
    border-radius: 4px;
    cursor: pointer;
}

.nav-menu {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    align-items: center;
}

.nav-menu li a {
    display: block;
    color: rgba(255,255,255,0.92);
    text-decoration: none;
    padding: 8px 12px;
    border-radius: 4px;
    font-size: 13px;
    font-weight: 500;
    white-space: nowrap;
    transition: background 0.15s;
}

.nav-menu li a:hover,
.nav-menu li a.active {
    background: rgba(255,255,255,0.18);
    color: #fff;
}

@media (max-width: 992px) {
    .nav-toggle { display: block; }
    .nav-menu {
        display: none;
        position: absolute;
        top: 52px;
        left: 0;
        right: 0;
        background: #0d47a1;
        flex-direction: column;
        align-items: stretch;
        padding: 8px;
        box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    }
    .nav-menu.open { display: flex; }
    .nav-menu li a { padding: 12px 16px; }
    .app-header { position: relative; }
    .app-header-inner { position: relative; }
}

/* Compact rational buttons */
.btn-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    margin: 12px 0;
}

.btn,
input[type="submit"].btn,
button.btn {
    display: inline-block;
    padding: 7px 14px;
    font-size: 13px;
    font-weight: 500;
    line-height: 1.4;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    color: #fff;
    background-color: #43a047;
    min-height: auto;
    width: auto;
    text-decoration: none;
}

.btn:hover { background-color: #388e3c; }

.btn-primary { background-color: #43a047; }
.btn-primary:hover { background-color: #388e3c; }
.btn-secondary { background-color: #607d8b; }
.btn-secondary:hover { background-color: #546e7a; }
.btn-danger, .btn-discard, .btn-delete { background-color: #c62828; }
.btn-danger:hover, .btn-discard:hover, .btn-delete:hover { background-color: #b71c1c; }
.btn-export { background-color: #1976d2; }
.btn-export:hover { background-color: #1565c0; }
.btn-export-word { background-color: #5e35b1; }
.btn-export-word:hover { background-color: #512da8; }

/* Messages */
.message, .alert {
    margin: 10px 0;
    padding: 10px 12px;
    border-radius: 4px;
    font-size: 13px;
}
.success, .alert-success { background: #e8f5e9; color: #2e7d32; border: 1px solid #c8e6c9; }
.error, .alert-error { background: #ffebee; color: #c62828; border: 1px solid #ffcdd2; }
.info, .alert-info { background: #e3f2fd; color: #1565c0; border: 1px solid #bbdefb; }

/* Form controls */
.form-control {
    width: 100%;
    padding: 8px 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 14px;
}

label {
    display: block;
    margin-bottom: 4px;
    font-weight: 600;
    font-size: 13px;
    color: #555;
}

/* Dashboard */
.dash-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 12px;
    margin-bottom: 20px;
}

.dash-card {
    background: linear-gradient(135deg, #e3f2fd 0%, #fff 100%);
    border: 1px solid #bbdefb;
    border-radius: 8px;
    padding: 16px;
    text-align: center;
}

.dash-card .num {
    font-size: 2rem;
    font-weight: 700;
    color: #1565c0;
    line-height: 1.2;
}

.dash-card .lbl {
    font-size: 12px;
    color: #666;
    margin-top: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.dash-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

@media (max-width: 900px) {
    .dash-grid { grid-template-columns: 1fr; }
}

.dash-panel {
    background: #fafafa;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 14px;
}

.dash-panel h3 {
    margin: 0 0 12px;
    font-size: 1rem;
    color: #37474f;
    border-bottom: 2px solid #1565c0;
    padding-bottom: 6px;
}

.dash-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.dash-table th,
.dash-table td {
    padding: 6px 8px;
    border-bottom: 1px solid #eee;
    text-align: left;
}

.dash-table th { color: #666; font-weight: 600; font-size: 12px; }

.bar-cell { min-width: 100px; }

.bar-wrap {
    background: #e0e0e0;
    border-radius: 3px;
    height: 18px;
    overflow: hidden;
}

.bar-fill {
    background: linear-gradient(90deg, #42a5f5, #1565c0);
    height: 100%;
    border-radius: 3px;
    min-width: 2px;
}

.count-badge {
    font-weight: 700;
    color: #1565c0;
    text-align: right;
    white-space: nowrap;
}

.coming-soon {
    text-align: center;
    padding: 40px 20px;
    color: #666;
}

.coming-soon h2 { color: #1565c0; margin-bottom: 8px; }