/*
 * Timeline Trust Student Management System
 * Moodle-Inspired Stylesheet
 *
 * Design direction:
 *   - Clean white background
 *   - Navy blue (#1d1b4b) accent matching Timeline Trust brand
 *   - Moodle-like navigation, tabs, cards, tables
 *   - Responsive layout
 *   - Simple, professional typography
 */

/* ============================================
   CSS Custom Properties (Design Tokens)
   ============================================ */
:root {
    /* Brand colours — matched from Timeline Trust website */
    --tt-navy:          #1d1b4b;
    --tt-navy-light:    #2d2a6e;
    --tt-navy-dark:     #13113a;
    --tt-accent:        #4a6cf7;
    --tt-accent-hover:  #3b5de7;
    --tt-green:         #8bc34a;
    --tt-green-dark:    #6d9b2e;

    /* Neutrals */
    --tt-white:         #ffffff;
    --tt-bg:            #f0f0f4;
    --tt-bg-card:       #ffffff;
    --tt-border:        #d1d5db;
    --tt-border-light:  #e5e7eb;
    --tt-text:          #1f2937;
    --tt-text-light:    #6b7280;
    --tt-text-muted:    #9ca3af;

    /* Status colours */
    --tt-success:       #16a34a;
    --tt-success-bg:    #f0fdf4;
    --tt-warning:       #d97706;
    --tt-warning-bg:    #fffbeb;
    --tt-danger:        #dc2626;
    --tt-danger-bg:     #fef2f2;
    --tt-info:          #2563eb;
    --tt-info-bg:       #eff6ff;

    /* Typography */
    --tt-font-family:   -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --tt-font-size:     15px;
    --tt-line-height:   1.6;

    /* Spacing */
    --tt-radius:        6px;
    --tt-radius-lg:     10px;
    --tt-shadow:        0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.06);
    --tt-shadow-md:     0 4px 6px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.06);
}


/* ============================================
   Reset & Base
   ============================================ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: var(--tt-font-size);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--tt-font-family);
    font-size: 1rem;
    line-height: var(--tt-line-height);
    color: var(--tt-text);
    background-color: var(--tt-bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}


/* ============================================
   Top Navigation Bar (Moodle-style)
   ============================================ */
.tt-navbar {
    background-color: var(--tt-navy);
    color: var(--tt-white);
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.15);
}

.tt-navbar-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--tt-white);
}

.tt-navbar-brand img {
    height: 36px;
    width: auto;
}

.tt-navbar-brand span {
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: 0.3px;
}

.tt-navbar-nav {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    list-style: none;
}

.tt-navbar-nav a {
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: var(--tt-radius);
    font-size: 0.9rem;
    font-weight: 500;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.tt-navbar-nav a:hover,
.tt-navbar-nav a.active {
    background-color: rgba(255, 255, 255, 0.12);
    color: var(--tt-white);
}

/* Mobile menu toggle */
.tt-navbar-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--tt-white);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.25rem;
}


/* ============================================
   Main Content Container
   ============================================ */
.tt-main {
    flex: 1;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}


/* ============================================
   Page Header
   ============================================ */
.tt-page-header {
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--tt-border-light);
}

.tt-page-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--tt-navy);
    margin-bottom: 0.25rem;
}

.tt-page-header p {
    color: var(--tt-text-light);
    font-size: 0.95rem;
}


/* ============================================
   Cards (Moodle-style content blocks)
   ============================================ */
.tt-card {
    background-color: var(--tt-bg-card);
    border: 1px solid var(--tt-border-light);
    border-radius: var(--tt-radius-lg);
    box-shadow: var(--tt-shadow);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.tt-card-header {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--tt-navy);
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--tt-border-light);
}

.tt-card-body {
    color: var(--tt-text);
}


/* ============================================
   Buttons
   ============================================ */
.tt-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.6rem 1.25rem;
    font-size: 0.9rem;
    font-weight: 600;
    font-family: inherit;
    border-radius: var(--tt-radius);
    border: 2px solid transparent;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s ease;
    line-height: 1.4;
}

.tt-btn:focus {
    outline: 2px solid var(--tt-accent);
    outline-offset: 2px;
}

/* Primary — navy filled */
.tt-btn-primary {
    background-color: var(--tt-navy);
    color: var(--tt-white);
    border-color: var(--tt-navy);
}

.tt-btn-primary:hover {
    background-color: var(--tt-navy-light);
    border-color: var(--tt-navy-light);
}

/* Secondary — outlined */
.tt-btn-secondary {
    background-color: transparent;
    color: var(--tt-navy);
    border-color: var(--tt-navy);
}

.tt-btn-secondary:hover {
    background-color: var(--tt-navy);
    color: var(--tt-white);
}

/* Success */
.tt-btn-success {
    background-color: var(--tt-success);
    color: var(--tt-white);
    border-color: var(--tt-success);
}

.tt-btn-success:hover {
    background-color: #15803d;
    border-color: #15803d;
}

/* Danger */
.tt-btn-danger {
    background-color: var(--tt-danger);
    color: var(--tt-white);
    border-color: var(--tt-danger);
}

.tt-btn-danger:hover {
    background-color: #b91c1c;
    border-color: #b91c1c;
}

/* Small button */
.tt-btn-sm {
    padding: 0.35rem 0.85rem;
    font-size: 0.8rem;
}

/* Large button */
.tt-btn-lg {
    padding: 0.85rem 2rem;
    font-size: 1rem;
}


/* ============================================
   Forms
   ============================================ */
.tt-form-group {
    margin-bottom: 1.25rem;
}

.tt-form-label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--tt-text);
    margin-bottom: 0.35rem;
}

.tt-form-label .required {
    color: var(--tt-danger);
    margin-left: 2px;
}

.tt-form-input,
.tt-form-select,
.tt-form-textarea {
    width: 100%;
    padding: 0.6rem 0.85rem;
    font-size: 0.9rem;
    font-family: inherit;
    color: var(--tt-text);
    background-color: var(--tt-white);
    border: 1px solid var(--tt-border);
    border-radius: var(--tt-radius);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.tt-form-input:focus,
.tt-form-select:focus,
.tt-form-textarea:focus {
    outline: none;
    border-color: var(--tt-accent);
    box-shadow: 0 0 0 3px rgba(74, 108, 247, 0.15);
}

.tt-form-input.is-invalid,
.tt-form-select.is-invalid {
    border-color: var(--tt-danger);
}

.tt-form-error {
    font-size: 0.8rem;
    color: var(--tt-danger);
    margin-top: 0.25rem;
}

.tt-form-hint {
    font-size: 0.8rem;
    color: var(--tt-text-muted);
    margin-top: 0.25rem;
}

.tt-form-textarea {
    resize: vertical;
    min-height: 80px;
}


/* ============================================
   Tables (Moodle-style admin lists)
   ============================================ */
.tt-table-wrapper {
    overflow-x: auto;
    border: 1px solid var(--tt-border-light);
    border-radius: var(--tt-radius-lg);
    box-shadow: var(--tt-shadow);
}

.tt-table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--tt-white);
    font-size: 0.9rem;
}

.tt-table thead th {
    background-color: var(--tt-navy);
    color: var(--tt-white);
    padding: 0.75rem 1rem;
    text-align: left;
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    white-space: nowrap;
}

.tt-table tbody td {
    padding: 0.7rem 1rem;
    border-bottom: 1px solid var(--tt-border-light);
    vertical-align: middle;
}

.tt-table tbody tr:last-child td {
    border-bottom: none;
}

.tt-table tbody tr:hover {
    background-color: #f8f9ff;
}


/* ============================================
   Alerts / Flash Messages
   ============================================ */
.tt-alert {
    padding: 0.85rem 1.25rem;
    border-radius: var(--tt-radius);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    border-left: 4px solid transparent;
}

.tt-alert-success {
    background-color: var(--tt-success-bg);
    color: #166534;
    border-left-color: var(--tt-success);
}

.tt-alert-warning {
    background-color: var(--tt-warning-bg);
    color: #92400e;
    border-left-color: var(--tt-warning);
}

.tt-alert-danger {
    background-color: var(--tt-danger-bg);
    color: #991b1b;
    border-left-color: var(--tt-danger);
}

.tt-alert-info {
    background-color: var(--tt-info-bg);
    color: #1e40af;
    border-left-color: var(--tt-info);
}


/* ============================================
   Badges / Status Pills
   ============================================ */
.tt-badge {
    display: inline-block;
    padding: 0.2rem 0.65rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 50px;
    line-height: 1.4;
}

.tt-badge-success {
    background-color: var(--tt-success-bg);
    color: var(--tt-success);
}

.tt-badge-warning {
    background-color: var(--tt-warning-bg);
    color: var(--tt-warning);
}

.tt-badge-danger {
    background-color: var(--tt-danger-bg);
    color: var(--tt-danger);
}

.tt-badge-info {
    background-color: var(--tt-info-bg);
    color: var(--tt-info);
}

.tt-badge-secondary {
    background-color: #f3f4f6;
    color: var(--tt-text-light);
}


/* ============================================
   Footer
   ============================================ */
.tt-footer {
    background-color: var(--tt-navy);
    color: rgba(255, 255, 255, 0.7);
    text-align: center;
    padding: 1rem 1.5rem;
    font-size: 0.85rem;
    margin-top: auto;
}

.tt-footer a {
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
}

.tt-footer a:hover {
    color: var(--tt-white);
    text-decoration: underline;
}


/* ============================================
   Welcome / Landing Page
   ============================================ */
.tt-welcome {
    text-align: center;
    padding: 3rem 1rem;
}

.tt-welcome-logo {
    width: 180px;
    height: auto;
    margin-bottom: 1.5rem;
}

.tt-welcome h1 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--tt-navy);
    margin-bottom: 0.5rem;
}

.tt-welcome .tt-welcome-subtitle {
    font-size: 1.1rem;
    color: var(--tt-text-light);
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.tt-welcome-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.tt-welcome-actions .tt-btn {
    min-width: 200px;
}

.tt-welcome-info {
    margin-top: 3rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.tt-welcome-info .tt-card {
    text-align: left;
}

.tt-welcome-info .tt-card h3 {
    color: var(--tt-navy);
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.tt-welcome-info .tt-card p {
    color: var(--tt-text-light);
    font-size: 0.9rem;
}


/* ============================================
   Utility Classes
   ============================================ */
.text-center { text-align: center; }
.text-right  { text-align: right; }
.text-muted  { color: var(--tt-text-muted); }
.text-danger { color: var(--tt-danger); }
.text-success { color: var(--tt-success); }
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.d-flex { display: flex; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }


/* ============================================
   Responsive
   ============================================ */
@media (max-width: 768px) {
    .tt-navbar {
        padding: 0 1rem;
    }

    .tt-navbar-nav {
        display: none;
        position: absolute;
        top: 60px;
        left: 0;
        right: 0;
        background-color: var(--tt-navy);
        flex-direction: column;
        padding: 0.5rem 0;
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.15);
    }

    .tt-navbar-nav.is-open {
        display: flex;
    }

    .tt-navbar-nav a {
        padding: 0.75rem 1.5rem;
        border-radius: 0;
    }

    .tt-navbar-toggle {
        display: block;
    }

    .tt-main {
        padding: 1.5rem 1rem;
    }

    .tt-welcome h1 {
        font-size: 1.5rem;
    }

    .tt-welcome-actions {
        flex-direction: column;
        align-items: center;
    }

    .tt-welcome-actions .tt-btn {
        width: 100%;
        max-width: 300px;
    }

    .tt-table-wrapper {
        margin: 0 -1rem;
        border-radius: 0;
        border-left: none;
        border-right: none;
    }
}

@media (max-width: 480px) {
    .tt-welcome {
        padding: 2rem 0.5rem;
    }

    .tt-page-header h1 {
        font-size: 1.3rem;
    }
}


/* ============================================
   Auth Pages (Login / Setup)
   ============================================ */
.tt-auth-body {
    background: linear-gradient(135deg, var(--tt-navy-dark) 0%, var(--tt-navy) 50%, var(--tt-navy-light) 100%);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.tt-auth-wrapper,
.tt-setup-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 2rem 1rem;
}

.tt-auth-card,
.tt-setup-card {
    background: var(--tt-white);
    border-radius: var(--tt-radius-lg);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
    padding: 2.5rem;
    width: 100%;
    max-width: 440px;
}

.tt-setup-card {
    max-width: 540px;
}

.tt-auth-header,
.tt-setup-header {
    text-align: center;
    margin-bottom: 1.5rem;
}

.tt-auth-logo {
    display: block;
    margin: 0 auto 1rem;
}

.tt-auth-header h1,
.tt-setup-header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--tt-navy);
    margin-bottom: 0.25rem;
}

.tt-auth-header p,
.tt-setup-header p {
    color: var(--tt-text-light);
    font-size: 0.9rem;
}

.tt-auth-form {
    margin-top: 1.5rem;
}

.tt-btn-block {
    display: flex;
    width: 100%;
}

.tt-auth-footer {
    text-align: center;
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid var(--tt-border-light);
}

.tt-auth-link {
    color: var(--tt-accent);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
}

.tt-auth-link:hover {
    text-decoration: underline;
}

.tt-alert-floating {
    position: fixed;
    top: 1rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2000;
    min-width: 300px;
    max-width: 500px;
    box-shadow: var(--tt-shadow-md);
}

/* Form row for side-by-side fields */
.tt-form-row {
    display: flex;
    gap: 1rem;
}

.tt-form-half {
    flex: 1;
}


/* ============================================
   Admin Layout
   ============================================ */
.tt-admin-body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    background-color: var(--tt-bg);
}

/* Admin Top Bar */
.tt-admin-topbar {
    background-color: var(--tt-navy);
    color: var(--tt-white);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.25rem;
    height: 56px;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.15);
}

.tt-admin-topbar-left {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.tt-admin-topbar-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.tt-admin-user-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
}

.tt-admin-user-name {
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
}

.tt-sidebar-toggle {
    background: none;
    border: none;
    color: var(--tt-white);
    font-size: 1.3rem;
    cursor: pointer;
    padding: 0.25rem;
    display: none;
}

/* Layout Grid */
.tt-admin-layout {
    display: flex;
    flex: 1;
}

/* Sidebar */
.tt-admin-sidebar {
    width: 240px;
    background-color: var(--tt-white);
    border-right: 1px solid var(--tt-border-light);
    /* Sticky pins the sidebar at top:56px under the topbar while the
       main column scrolls. align-self prevents the flex parent from
       stretching the sidebar to match content height — without it,
       a tall main column drags the sidebar with it. */
    position: sticky;
    top: 56px;
    align-self: flex-start;
    height: calc(100vh - 56px);
    overflow-y: auto;
    flex-shrink: 0;
}

.tt-sidebar-nav {
    padding: 0.75rem 0;
}

.tt-sidebar-link {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0.65rem 1.25rem;
    color: var(--tt-text);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: background-color 0.15s ease, color 0.15s ease;
    border-left: 3px solid transparent;
}

.tt-sidebar-link:hover {
    background-color: #f3f4ff;
    color: var(--tt-navy);
}

.tt-sidebar-link.active {
    background-color: #eef0ff;
    color: var(--tt-navy);
    border-left-color: var(--tt-accent);
    font-weight: 600;
}

.tt-sidebar-icon {
    font-size: 1.1rem;
    width: 1.5rem;
    text-align: center;
}

.tt-sidebar-divider {
    height: 1px;
    background-color: var(--tt-border-light);
    margin: 0.5rem 1rem;
}

/* Admin Main Content */
.tt-admin-content {
    flex: 1;
    padding: 1.5rem 2rem;
    max-width: 1100px;
    min-width: 0;
}


/* ============================================
   Dashboard Stats Cards
   ============================================ */
.tt-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.25rem;
    margin-bottom: 2rem;
}

.tt-stat-card {
    background-color: var(--tt-white);
    border: 1px solid var(--tt-border-light);
    border-radius: var(--tt-radius-lg);
    padding: 1.25rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    box-shadow: var(--tt-shadow);
    transition: box-shadow 0.2s ease;
}

.tt-stat-card:hover {
    box-shadow: var(--tt-shadow-md);
}

.tt-stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    flex-shrink: 0;
}

.tt-stat-icon-blue   { background-color: var(--tt-info-bg);    color: #1d4ed8; }
.tt-stat-icon-green  { background-color: var(--tt-success-bg); color: #15803d; }
.tt-stat-icon-purple { background-color: #f3f0ff;              color: #6d28d9; }
.tt-stat-icon-orange { background-color: var(--tt-warning-bg); color: #b45309; }

/* ============================================
   Inline SVG icons (tt_icon helper)
   ============================================ */
.tt-icon {
    display: inline-block;
    vertical-align: -0.125em;
    width: 1em;
    height: 1em;
    flex-shrink: 0;
}

.tt-icon-lg { width: 1.4rem; height: 1.4rem; }

/* Card header icons get a little breathing room */
.tt-card-header .tt-icon,
.tt-sidebar-icon .tt-icon,
.tt-btn .tt-icon {
    margin-right: 0.4em;
}

/* Stat-card icons sit larger inside their coloured tile */
.tt-stat-icon .tt-icon { width: 1.6rem; height: 1.6rem; margin: 0; }

/* WhatsApp brand colour for the help button */
.tt-btn .tt-icon-whatsapp { color: #25D366; }

.tt-stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--tt-navy);
    line-height: 1.2;
}

.tt-stat-label {
    font-size: 0.8rem;
    color: var(--tt-text-light);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

/* Quick Actions */
.tt-quick-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}


/* ============================================
   Admin table pagination
   ============================================ */
.tt-pagination {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--tt-border, #e0e0e0);
}

.tt-pagination-info {
    font-size: 0.9rem;
    color: var(--tt-text-muted, #666);
}

.tt-pagination-controls {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem;
}

.tt-pagination-pages {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.tt-pagination-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 2rem;
    height: 2rem;
    padding: 0 0.5rem;
    border: 1px solid var(--tt-border, #d0d0d0);
    border-radius: 4px;
    background: #fff;
    color: var(--tt-text, #333);
    font-size: 0.875rem;
    text-decoration: none;
    line-height: 1;
}

a.tt-pagination-btn:hover {
    border-color: var(--tt-primary, #0f6cbd);
    color: var(--tt-primary, #0f6cbd);
}

.tt-pagination-btn.is-active {
    border-color: var(--tt-primary, #0f6cbd);
    color: var(--tt-primary, #0f6cbd);
    font-weight: 600;
}

.tt-pagination-btn.is-disabled {
    opacity: 0.4;
    cursor: default;
}

.tt-pagination-ellipsis {
    padding: 0 0.35rem;
    color: var(--tt-text-muted, #888);
}

.tt-pagination-per-page {
    margin: 0;
}

.tt-pagination-select {
    min-width: 7rem;
    height: 2rem;
    padding: 0 0.5rem;
    font-size: 0.875rem;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ============================================
   Admin Responsive
   ============================================ */
@media (max-width: 768px) {
    .tt-sidebar-toggle {
        display: block;
    }

    .tt-admin-sidebar {
        position: fixed;
        top: 56px;
        left: -260px;
        width: 260px;
        z-index: 999;
        transition: left 0.25s ease;
        box-shadow: 2px 0 8px rgba(0, 0, 0, 0.1);
        min-height: calc(100vh - 56px);
    }

    .tt-admin-sidebar.is-open {
        left: 0;
    }

    .tt-admin-content {
        padding: 1rem;
    }

    .tt-admin-user-name {
        display: none;
    }

    .tt-stats-grid {
        grid-template-columns: 1fr 1fr;
    }

    .tt-form-row {
        flex-direction: column;
        gap: 0;
    }
}

@media (max-width: 480px) {
    .tt-stats-grid {
        grid-template-columns: 1fr;
    }

    .tt-auth-card,
    .tt-setup-card {
        padding: 1.5rem;
    }
}

/* ============================================
   Student / Applicant Portal Layout
   ============================================ */
.tt-portal-body {
    background: var(--tt-bg);
}

.tt-portal-main {
    min-height: calc(100vh - 160px);
}

.tt-portal-user-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    color: var(--tt-text-light);
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    .tt-portal-user-label {
        border-bottom: 1px solid var(--tt-border-light);
        margin-bottom: 0.25rem;
    }
}

/* ============================================
   Admin list pages (courses, applicants, etc.)
   ============================================ */
.tt-page-header-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.tt-page-header-actions h1 {
    margin-bottom: 0.25rem;
}

.tt-card-compact .tt-card-body {
    padding: 1rem 1.25rem;
}

.tt-card-body-flush {
    padding: 0;
}

.tt-filter-form .tt-form-inline {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0;
}

.tt-form-select-sm {
    max-width: 160px;
}

.tt-empty-state {
    text-align: center;
    padding: 2.5rem 1.5rem;
    color: var(--tt-text-light);
}

.tt-empty-state p {
    margin-bottom: 1rem;
}

.tt-text-muted {
    color: var(--tt-text-muted);
}

.tt-table-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    align-items: center;
}

.tt-inline-form {
    display: inline;
    margin: 0;
}

.tt-form-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1.5rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--tt-border-light);
}

.tt-btn-warning {
    background: var(--tt-warning);
    color: #fff;
    border-color: var(--tt-warning);
}

.tt-btn-warning:hover {
    background: #b45309;
    border-color: #b45309;
    color: #fff;
}

.tt-btn-link {
    background: transparent;
    border: none;
    color: var(--tt-accent);
    padding: 0.35rem 0.5rem;
}

.tt-btn-link:hover {
    text-decoration: underline;
    color: var(--tt-accent-hover);
}

.tt-table code {
    font-size: 0.85em;
    background: var(--tt-bg);
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
}

/* ============================================
   Registration form
   ============================================ */
.tt-register-wrapper {
    align-items: flex-start;
    padding: 2rem 1rem;
}

.tt-register-card {
    max-width: 640px;
    width: 100%;
}

.tt-form-optional {
    margin: 1rem 0;
    border: 1px solid var(--tt-border-light);
    border-radius: var(--tt-radius);
    padding: 0.75rem 1rem;
    background: var(--tt-bg);
}

.tt-form-optional summary {
    cursor: pointer;
    font-weight: 600;
    color: var(--tt-navy);
    user-select: none;
}

.tt-form-optional-body {
    margin-top: 1rem;
}

.tt-steps-list {
    margin: 0;
    padding-left: 1.25rem;
    line-height: 1.8;
    color: var(--tt-text);
}


/* ============================================
   Detail Table (key-value display)
   ============================================ */
.tt-detail-table {
    width: 100%;
    border-collapse: collapse;
}

.tt-detail-table th,
.tt-detail-table td {
    padding: 0.7rem 0.85rem;
    text-align: left;
    border-bottom: 1px solid var(--tt-border-light);
    font-size: 0.9rem;
}

.tt-detail-table th {
    width: 180px;
    font-weight: 600;
    color: var(--tt-text-light);
    white-space: nowrap;
    vertical-align: top;
}

.tt-detail-table tr:last-child th,
.tt-detail-table tr:last-child td {
    border-bottom: none;
}

/* Inline form (used for action buttons inside tables/cards) */
.tt-inline-form {
    display: inline-block;
}

.tt-text-muted {
    color: var(--tt-text-muted);
}

@media (max-width: 480px) {
    .tt-detail-table th {
        width: auto;
        display: block;
        padding-bottom: 0;
        border-bottom: none;
    }

    .tt-detail-table td {
        display: block;
        padding-top: 0.2rem;
    }
}

/* ============================================
   Tabs (Payment method switcher)
   ============================================ */
.tt-tabs {
    display: flex;
    gap: 0;
    border-bottom: 2px solid var(--tt-border-light);
    margin-bottom: 1.5rem;
    overflow-x: auto;
}

.tt-tab-btn {
    background: none;
    border: none;
    padding: 0.7rem 1.2rem;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--tt-text-light);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    white-space: nowrap;
    transition: color 0.2s, border-color 0.2s;
}

.tt-tab-btn:hover {
    color: var(--tt-accent);
}

.tt-tab-btn.active {
    color: var(--tt-accent);
    border-bottom-color: var(--tt-accent);
}

.tt-tab-content {
    display: none;
}

.tt-tab-content.active {
    display: block;
}

/* ============================================
   Payment Instructions Card
   ============================================ */
.tt-payment-instructions {
    background: var(--tt-bg);
    border: 1px solid var(--tt-border-light);
    border-left: 4px solid var(--tt-accent);
    border-radius: var(--tt-radius);
    padding: 1rem 1.25rem;
    margin-bottom: 1.5rem;
}

.tt-payment-instructions h4 {
    margin: 0 0 0.5rem;
    font-size: 0.95rem;
    color: var(--tt-navy);
}

.tt-payment-instructions p {
    margin: 0.25rem 0;
    font-size: 0.9rem;
}

.tt-payment-steps {
    margin: 0 0 1.25rem;
    padding-left: 1.25rem;
    color: var(--tt-text);
    font-size: 0.95rem;
    line-height: 1.6;
}

.tt-payment-steps li {
    margin-bottom: 0.35rem;
}

/* Account details panel (bank / MoMo) — matches Timeline Trust payment page */
.tt-payment-account-panel {
    border: 1px solid var(--tt-border);
    border-radius: var(--tt-radius);
    margin-bottom: 1.5rem;
    overflow: hidden;
    background: #fff;
}

.tt-payment-account-panel__bar {
    background: #e8e8e8;
    color: var(--tt-text);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    padding: 0.5rem 1rem;
    text-transform: uppercase;
}

.tt-payment-account-panel__body {
    padding: 1.25rem 1.5rem 1.5rem;
}

.tt-payment-account-panel__title {
    margin: 0 0 1rem;
    font-size: 1.35rem;
    font-weight: 600;
    color: var(--tt-navy);
}

.tt-payment-account-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.tt-payment-account-table th {
    text-align: left;
    font-weight: 700;
    padding: 0.5rem 1rem 0.5rem 0;
    border-bottom: 1px solid var(--tt-border);
    color: var(--tt-navy);
    font-size: 0.8rem;
    letter-spacing: 0.02em;
}

.tt-payment-account-table td {
    padding: 0.65rem 1rem 0.65rem 0;
    vertical-align: top;
}

.tt-payment-account-panel__amount {
    margin: 0 0 1rem;
    font-size: 0.95rem;
}

.tt-payment-account-panel__note {
    margin: 0 0 0.65rem;
    font-size: 0.9rem;
    line-height: 1.55;
    color: var(--tt-text-muted, #555);
}

.tt-payment-notify-form {
    margin-top: 0.5rem;
    padding-top: 1.25rem;
    border-top: 2px dashed var(--tt-border-light);
}

.tt-payment-notify-form__heading {
    margin: 0 0 0.35rem;
    font-size: 1.1rem;
    color: var(--tt-navy);
}

/* Admin settings sections */
.tt-settings-section-title {
    margin: 0 0 0.35rem;
    font-size: 1.25rem;
    color: var(--tt-navy);
}

.tt-settings-subtitle {
    margin: 1.25rem 0 0.75rem;
    font-size: 1rem;
    font-weight: 600;
    color: var(--tt-navy);
}

.tt-settings-divider {
    border: none;
    border-top: 1px solid var(--tt-border-light);
    margin: 2rem 0;
}

.tt-form-check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.95rem;
    cursor: pointer;
}

.tt-form-check input[type="checkbox"] {
    width: 1.1rem;
    height: 1.1rem;
}

.tt-form-checkbox-group {
    margin-top: 1rem;
    margin-bottom: 0.5rem;
}

.tt-checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
    font-size: 0.9rem;
    line-height: 1.5;
    cursor: pointer;
    color: var(--tt-text-secondary, #555);
}

.tt-checkbox-label input[type="checkbox"] {
    flex-shrink: 0;
    width: 1.15rem;
    height: 1.15rem;
    margin-top: 0.15rem;
    accent-color: var(--tt-navy, #1a1f36);
}

.tt-checkbox-label a {
    color: var(--tt-navy, #1a1f36);
    text-decoration: underline;
    font-weight: 600;
}

.tt-checkbox-label a:hover {
    color: var(--tt-primary, #4a6cf7);
}

.tt-checkbox-label.is-invalid {
    color: var(--tt-danger, #dc3545);
}

.tt-form-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--tt-border-light);
}

.tt-mb-2 {
    margin-bottom: 1.25rem;
}

.tt-page-header--actions {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.tt-page-header--actions h1 {
    margin: 0 0 0.25rem;
}

.tt-table-actions {
    white-space: nowrap;
    text-align: right;
}

.tt-inline-form {
    display: inline-block;
    margin-left: 0.35rem;
    vertical-align: middle;
}

.tt-nowrap {
    white-space: nowrap;
}

.tt-role-block {
    margin-bottom: 1.5rem;
    padding-bottom: 1.25rem;
    border-bottom: 1px solid var(--tt-border-light);
}

.tt-role-block:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.tt-role-block__title {
    margin: 0 0 0.5rem;
    font-size: 1rem;
}

.tt-perm-list {
    margin: 0.5rem 0 0;
    padding-left: 1.25rem;
    font-size: 0.9rem;
    line-height: 1.6;
}

.tt-perm-list li {
    margin-bottom: 0.35rem;
}

.tt-role-block__header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.tt-role-block__access {
    font-size: 0.85rem;
    color: var(--tt-text-muted, #666);
    font-weight: 600;
}

.tt-role-block__summary {
    margin: 0 0 1rem;
    line-height: 1.55;
    color: var(--tt-text);
}

.tt-role-cap-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
    margin-bottom: 1rem;
}

@media (max-width: 768px) {
    .tt-role-cap-grid {
        grid-template-columns: 1fr;
    }
}

.tt-role-cap-grid--compact {
    margin-top: 0.75rem;
    gap: 1rem;
}

.tt-role-cap-section {
    background: var(--tt-bg, #f8f9fa);
    border: 1px solid var(--tt-border-light);
    border-radius: var(--tt-radius);
    padding: 1rem 1.15rem;
}

.tt-role-cap-section--view {
    border-left: 4px solid var(--tt-accent, #0f6cbf);
}

.tt-role-cap-section--do {
    border-left: 4px solid #2e7d32;
}

.tt-role-cap-section--cannot {
    background: #fff8f8;
    border-left: 4px solid #c62828;
    margin-bottom: 0.75rem;
}

.tt-role-cap-heading {
    margin: 0 0 0.65rem;
    font-size: 0.9rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--tt-navy);
}

.tt-role-cap-list {
    margin: 0;
    padding-left: 1.2rem;
    font-size: 0.9rem;
    line-height: 1.55;
}

.tt-role-cap-list li {
    margin-bottom: 0.35rem;
}

.tt-role-cap-list--cannot li {
    color: #5d4037;
}

.tt-role-menu-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-bottom: 0.25rem;
}

.tt-role-menu-chip {
    display: inline-block;
    padding: 0.25rem 0.65rem;
    font-size: 0.8rem;
    background: #e8f0fe;
    color: var(--tt-navy);
    border-radius: 999px;
    border: 1px solid #c5d9f5;
}

.tt-role-perms-details {
    margin-top: 0.5rem;
    font-size: 0.9rem;
}

.tt-role-perms-details summary {
    cursor: pointer;
    color: var(--tt-accent);
    font-weight: 600;
    padding: 0.35rem 0;
}

.tt-mt-2 {
    margin-top: 1.5rem;
}

/* ============================================
   Form inline layout (class change row)
   ============================================ */
.tt-form-inline-wrap {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.tt-form-select-inline {
    flex: 1;
    min-width: 200px;
}

/* ============================================
   Helpers
   ============================================ */
.tt-stat-value-sm {
    font-size: 1rem !important;
}

.tt-form-input-lg {
    font-size: 1.1rem;
    padding: 0.75rem 1rem;
}

.mt-1 {
    margin-top: 0.5rem;
}

.tt-badge-danger {
    background: #dc2626;
    color: #fff;
}

.tt-badge-warning {
    background: #f59e0b;
    color: #fff;
}

.tt-card-header {
    padding: 0.85rem 1.25rem;
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--tt-navy);
    background: var(--tt-bg);
    border-bottom: 1px solid var(--tt-border-light);
}

@media (max-width: 600px) {
    .tt-tabs {
        flex-wrap: nowrap;
        gap: 0;
    }

    .tt-tab-btn {
        padding: 0.5rem 0.75rem;
        font-size: 0.8rem;
    }

    .tt-form-inline-wrap {
        flex-direction: column;
        align-items: stretch;
    }
}

/* ============================================
   Admin filter form
   ============================================ */
.tt-filter-form {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    flex-wrap: wrap;
}

.tt-form-select-sm {
    padding: 0.4rem 0.6rem;
    font-size: 0.85rem;
    min-width: 160px;
}

.tt-mb-1 {
    margin-bottom: 0.75rem;
}

.tt-mt-1 {
    margin-top: 0.75rem;
}

/* ============================================
   Admin action buttons
   ============================================ */
.tt-action-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    align-items: flex-start;
}

.tt-action-form {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    flex-wrap: wrap;
}

.tt-action-form .tt-form-group {
    margin-bottom: 0;
}

.tt-btn-success {
    background: #16a34a;
    color: #fff;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: var(--tt-radius);
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.tt-btn-success:hover {
    background: #15803d;
}

.tt-btn-warning {
    background: #f59e0b;
    color: #fff;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: var(--tt-radius);
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.tt-btn-warning:hover {
    background: #d97706;
}

/* ============================================
   Table wrap overflow
   ============================================ */
.tt-table-wrap {
    overflow-x: auto;
}

.tt-text-truncate {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

@media (max-width: 768px) {
    .tt-action-buttons {
        flex-direction: column;
    }
}