:root {
    --primary: #003366;
    --primary-dark: #001f44;
    --secondary: #6c757d;
    --success: #198754;
    --danger: #dc3545;
    --warning: #ffc107;
    --info: #0dcaf0;
    --light: #f8f9fa;
    --dark: #212529;
    --gray: #6b7280;
    --border: #e5e7eb;
    --bg: #f3f6fb;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(120deg, #d9e6f5 0%, #eef4fb 100%);
    color: #1f2937;
    min-height: 100vh;
    animation: gradientBG 8s ease-in-out infinite alternate;
}

@keyframes gradientBG {
    0% { background: linear-gradient(120deg, #d9e6f5 0%, #eef4fb 100%); }
    100% { background: linear-gradient(120deg, #eef4fb 0%, #d9e6f5 100%); }
}

a {
    color: var(--primary);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.container {
    width: min(1200px, 96%);
    margin: 20px auto;
}

.hidden { display: none !important; }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 16px;
    border-radius: 10px;
    border: 1px solid transparent;
    font-weight: 600;
    cursor: pointer;
    transition: .2s ease;
    text-decoration: none;
}

.btn:hover { transform: translateY(-1px); text-decoration: none; }
.btn:disabled { opacity: .6; cursor: not-allowed; transform: none; }

.btn-primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-primary {
    background: linear-gradient(120deg, #003366 60%, #0f2d52 100%);
    color: #fff;
    border-color: var(--primary);
    box-shadow: 0 2px 8px rgba(0,51,102,0.18);
    transition: background 0.2s, box-shadow 0.2s;
}
.btn-primary:hover {
    background: linear-gradient(120deg, #001f44 0%, #003366 100%);
    border-color: var(--primary-dark);
    box-shadow: 0 4px 16px rgba(0,51,102,0.28);
}

.btn-outline { background: #fff; color: var(--primary); border-color: var(--primary); }
.btn-outline:hover { background: #eef4ff; }

.btn-success { background: var(--success); color: #fff; border-color: var(--success); }
.btn-danger { background: var(--danger); color: #fff; border-color: var(--danger); }
.btn-secondary { background: var(--secondary); color: #fff; border-color: var(--secondary); }

/* Alerts */
.alert {
    border-radius: 10px;
    padding: 12px 14px;
    margin: 10px 0;
    border: 1px solid transparent;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}
.alert-error { background: #fdecec; border-color: #f5c2c7; color: #842029; }
.alert-success { background: #eaf7ef; border-color: #badbcc; color: #0f5132; }
.alert-warning { background: #fff8e1; border-color: #ffe69c; color: #664d03; }
.alert-info { background: #e7f1ff; border-color: #b6d4fe; color: #084298; }

/* Forms */
.form-group { margin-bottom: 16px; }
.form-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; }
.form-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    margin-bottom: 6px;
}
.form-help { font-size: .9rem; color: var(--gray); margin-top: 6px; }
.form-control {
    width: 100%;
    padding: 11px 12px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: #fff;
    font-size: .96rem;
}
.form-control:focus {
    outline: none;
    border-color: #9ec5fe;
    box-shadow: 0 0 0 3px rgba(13,110,253,.15);
}

.form-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 14px;
}

.password-input { position: relative; }
.password-input .password-toggle {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    border: none;
    background: transparent;
    color: var(--gray);
    cursor: pointer;
}

/* Landing page */
.main-header {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 18px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
}
.logo { display: flex; align-items: center; gap: 12px; }
.logo-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: linear-gradient(135deg, #003366, #0f2d52);
    color: #fff;
    display: grid;
    place-items: center;
}
.logo-text h1, .logo-text h2 { margin: 0; }
.logo-text p { margin: 2px 0 0; color: var(--gray); }

.hero {
    margin-top: 16px;
    background: linear-gradient(135deg, #003366, #0f2d52);
    color: #fff;
    border-radius: 16px;
    padding: 26px 22px;
}
.hero .subtitle { opacity: .95; font-weight: 600; }

.portal-cards {
    margin-top: 16px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 14px;
}
.portal-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 18px;
}
.card-icon {
    width: 42px;
    height: 42px;
    display: grid;
    place-items: center;
    border-radius: 10px;
    background: #eff6ff;
    color: var(--primary);
    margin-bottom: 8px;
}
.portal-status { margin-top: 10px; color: var(--gray); font-size: .92rem; }
.status-online { color: #22c55e; }

.stats-section,
.registration-section,
.features,
.instructions-section,
.admin-notice,
.contact-section,
.footer {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 18px;
    margin-top: 16px;
}

.section-title { margin: 0 0 12px; }

.stats-grid,
.features-grid,
.instructions-grid,
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 12px;
}

.stat-box,
.feature-item,
.instruction-item,
.contact-item {
    background: var(--light);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 14px;
}

/* Login pages */
.back-home { margin-bottom: 12px; }
.login-container {
    background: rgba(255,255,255,0.65);
    border: 1px solid rgba(200,220,255,0.35);
    border-radius: 22px;
    overflow: hidden;
    box-shadow: 0 12px 32px 0 rgba(0,51,102,0.12), 0 1.5px 12px 0 rgba(0,51,102,0.10);
    backdrop-filter: blur(12px);
    transition: box-shadow 0.3s;
}
.login-container:hover {
    box-shadow: 0 16px 40px 0 rgba(0,51,102,0.22), 0 2px 16px 0 rgba(0,51,102,0.16);
}
.login-header {
    background: linear-gradient(135deg, #003366, #0f2d52);
    color: #fff;
    padding: 18px;
}
.login-body { padding: 18px; }
.login-title { margin: 0 0 6px; }
.login-subtitle { margin: 0 0 14px; color: var(--gray); }

.tab-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    background: #f1f5f9;
    border-radius: 10px;
    padding: 4px;
    gap: 4px;
    margin-bottom: 12px;
}
.tab-btn {
    border: none;
    border-radius: 8px;
    padding: 10px;
    background: transparent;
    cursor: pointer;
    font-weight: 600;
    transition: background 0.2s, color 0.2s, box-shadow 0.2s;
}
.tab-btn.active {
    background: #fff;
    color: var(--primary);
    box-shadow: 0 2px 8px rgba(0,51,102,0.14);
    border: 1px solid #e5e7eb;
}
.tab-btn:hover {
    background: #eaf1ff;
    color: #003366;
}
.tab-content { display: none; }
.tab-content.active { display: block; }

.practice-info,
.login-info,
.practice-rules,
.technical-info {
    background: var(--light);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 14px;
    margin-bottom: 14px;
}

.rules-grid { display: grid; grid-template-columns: 1fr; gap: 10px; }
.rule-item, .info-item { display: flex; gap: 10px; }

.form-step { display: none; }
.form-step.active { display: block; }

/* Small helpers */
.text-center { text-align: center; }
.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 12px; }
.mb-2 { margin-bottom: 8px; }
.mb-3 { margin-bottom: 12px; }

@media (max-width: 768px) {
    .main-header { flex-direction: column; align-items: flex-start; }
    .container { width: 94%; }
    .form-actions { flex-direction: column; }
    .btn { width: 100%; }
}

/* ===== Extended project coverage ===== */

/* disabled/link states used by portal controls */
.disabled,
.btn.disabled,
a.disabled {
    opacity: .55;
    pointer-events: none;
    cursor: not-allowed;
}

.status-offline { color: #ef4444 !important; }

/* richer card/internal spacing */
.portal-card h3,
.portal-card p,
.feature-item h4,
.feature-item p,
.instruction-item h4,
.instruction-item p,
.stat-content h3,
.stat-content p {
    margin: 0;
}

.portal-card h3,
.feature-item h4,
.instruction-item h4,
.stat-content h3 {
    margin-bottom: 6px;
}

.portal-card p,
.feature-item p,
.instruction-item p,
.stat-content p {
    color: #4b5563;
    line-height: 1.5;
}

.feature-icon,
.instruction-icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    display: grid;
    place-items: center;
    background: #eaf1ff;
    color: var(--primary);
    margin-bottom: 8px;
}

.support-info {
    margin-top: 12px;
    padding: 10px 12px;
    border-radius: 10px;
    background: #eef6ff;
    border: 1px solid #dbeafe;
}

.support-info p {
    margin: 6px 0;
    color: #1e3a8a;
}

/* footer on landing page */
.main-footer {
    margin-top: 18px;
    background: #111827;
    color: #e5e7eb;
    border-radius: 14px;
    overflow: hidden;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    padding: 18px;
}

.footer-section h4 {
    margin: 0 0 10px;
    color: #fff;
}

.footer-section p {
    margin: 0;
    color: #cbd5e1;
    line-height: 1.55;
}

.footer-section ul {
    margin: 0;
    padding-left: 18px;
}

.footer-section li { margin: 6px 0; }

.footer-section a {
    color: #cbd5e1;
}

.footer-section a:hover {
    color: #fff;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,.12);
    padding: 12px 18px;
    display: flex;
    justify-content: space-between;
    gap: 10px;
    flex-wrap: wrap;
    font-size: .92rem;
    color: #cbd5e1;
}

/* admin/practice login helpers */
.tab-container { width: 100%; }

.practice-info,
.info-content,
.login-info,
.technical-info,
.practice-rules {
    line-height: 1.5;
}

.practice-info {
    display: flex;
    gap: 10px;
    align-items: flex-start;
}

.practice-info > i {
    color: var(--primary);
    margin-top: 2px;
}

.info-content {
    display: grid;
    gap: 10px;
}

.info-item h5,
.rule-item h5 { margin: 0 0 4px; }

.info-item p,
.rule-item p {
    margin: 0;
    color: #4b5563;
}

.rules-grid .rule-item,
.info-content .info-item {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 10px;
}

.rules-grid .rule-item > i,
.info-content .info-item > i {
    color: var(--primary);
    margin-top: 2px;
}

.technical-info ul {
    margin: 8px 0 0;
    padding-left: 18px;
}

.technical-info li {
    margin: 6px 0;
    color: #4b5563;
}

.technical-info li i {
    color: #16a34a;
    margin-right: 6px;
}

/* admin login form wizard */
.form-step {
    padding: 2px 0;
}

#adminLoginForm .form-step:not(.active) {
    display: none;
}

/* exam register utility classes (shared names) */
.subjects-container,
.subjects-grid {
    border: 1px solid var(--border);
    border-radius: 10px;
    background: #fff;
}

.subject-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 10px;
    border-radius: 8px;
}

.subject-item label {
    cursor: pointer;
}

.subject-item input[type='checkbox'] {
    accent-color: var(--primary);
}

/* global modal-friendly helpers used in dynamic UIs */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-card {
    width: min(640px, 94%);
    background: #fff;
    border-radius: 14px;
    border: 1px solid var(--border);
    box-shadow: 0 18px 45px rgba(0,0,0,.2);
    padding: 16px;
}