/* ============================================
   RISE SaaS Application - Stylesheet
   ============================================ */

:root {
    --primary: #4e73df;
    --primary-dark: #3a5bc7;
    --secondary: #858796;
    --success: #1cc88a;
    --info: #36b9cc;
    --warning: #f6c23e;
    --danger: #e74a3b;
    --light: #f8f9fc;
    --dark: #2c3e50;
    --sidebar-width: 260px;
    --sidebar-collapsed: 70px;
    --navbar-height: 60px;
    --border-radius: 12px;
    --shadow: 0 0.15rem 1.75rem 0 rgba(58, 59, 69, 0.1);
    --shadow-lg: 0 0.5rem 2rem rgba(0, 0, 0, 0.1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== DARK THEME VARIABLES ===== */
[data-theme="dark"] {
    --light: #1a1d23;
    --dark: #e2e8f0;
    --bg-body: #12151a;
    --bg-card: #1e2128;
    --bg-sidebar: #161920;
    --bg-navbar: #1e2128;
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --border-color: #2d3748;
    --shadow: 0 0.15rem 1.75rem 0 rgba(0, 0, 0, 0.3);
}

[data-theme="light"] {
    --bg-body: #f8f9fc;
    --bg-card: #ffffff;
    --bg-sidebar: #ffffff;
    --bg-navbar: #ffffff;
    --text-primary: #2c3e50;
    --text-secondary: #858796;
    --border-color: #e3e6f0;
}

/* ===== GLOBAL RESET ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-body);
    color: var(--text-primary);
    overflow-x: hidden;
    transition: var(--transition);
}

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

a:hover {
    color: var(--primary-dark);
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar {
    width: 6px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: var(--secondary);
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--primary);
}

/* ===== SIDEBAR ===== */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    z-index: 1050;
    transition: var(--transition);
    overflow-y: auto;
    overflow-x: hidden;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.05);
}

.sidebar.collapsed {
    width: var(--sidebar-collapsed);
}

.sidebar-brand {
    display: flex;
    align-items: center;
    padding: 15px 20px;
    height: var(--navbar-height);
    border-bottom: 1px solid var(--border-color);
    gap: 12px;
}

.sidebar-brand img {
    width: 36px;
    height: 36px;
    border-radius: 8px;
}

.sidebar-brand .brand-text {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary);
    white-space: nowrap;
    transition: var(--transition);
}

.sidebar-brand .brand-tagline {
    font-size: 0.65rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
    white-space: nowrap;
}

.sidebar.collapsed .brand-text,
.sidebar.collapsed .brand-tagline,
.sidebar.collapsed .nav-text,
.sidebar.collapsed .sidebar-section-title {
    display: none;
}

.sidebar-section-title {
    padding: 15px 20px 5px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--text-secondary);
    white-space: nowrap;
}

.sidebar-nav {
    list-style: none;
    padding: 10px 0;
}

.sidebar-nav .nav-item {
    margin: 2px 10px;
}

.sidebar-nav .nav-link {
    display: flex;
    align-items: center;
    padding: 10px 14px;
    color: var(--text-secondary);
    border-radius: 8px;
    transition: var(--transition);
    gap: 12px;
    font-size: 0.9rem;
    font-weight: 500;
    white-space: nowrap;
}

.sidebar-nav .nav-link:hover {
    background: rgba(78, 115, 223, 0.08);
    color: var(--primary);
}

.sidebar-nav .nav-link.active {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    box-shadow: 0 4px 15px rgba(78, 115, 223, 0.3);
}

.sidebar-nav .nav-link i {
    width: 20px;
    text-align: center;
    font-size: 1rem;
    flex-shrink: 0;
}

/* ===== MAIN CONTENT ===== */
.main-content {
    margin-left: var(--sidebar-width);
    transition: var(--transition);
    min-height: 100vh;
}

.sidebar.collapsed ~ .main-content {
    margin-left: var(--sidebar-collapsed);
}

/* ===== TOP NAVBAR ===== */
.top-navbar {
    position: sticky;
    top: 0;
    height: var(--navbar-height);
    background: var(--bg-navbar);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 25px;
    z-index: 1040;
    box-shadow: var(--shadow);
}

.navbar-left {
    display: flex;
    align-items: center;
    gap: 15px;
}

.navbar-right {
    display: flex;
    align-items: center;
    gap: 15px;
}

.sidebar-toggle {
    background: none;
    border: none;
    font-size: 1.2rem;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 8px;
    border-radius: 8px;
    transition: var(--transition);
}

.sidebar-toggle:hover {
    background: rgba(78, 115, 223, 0.08);
    color: var(--primary);
}

.page-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* Theme Toggle */
.theme-toggle {
    background: none;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1rem;
    color: var(--text-secondary);
    transition: var(--transition);
}

.theme-toggle:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: rotate(30deg);
}

/* User Dropdown */
.user-dropdown .dropdown-toggle {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 5px 12px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    background: transparent;
    color: var(--text-primary);
    transition: var(--transition);
}

.user-dropdown .dropdown-toggle:hover {
    border-color: var(--primary);
}

.user-dropdown .dropdown-toggle::after {
    display: none;
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--info));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 600;
    font-size: 0.85rem;
}

.user-info {
    text-align: left;
    line-height: 1.2;
}

.user-info .user-name {
    font-size: 0.85rem;
    font-weight: 600;
}

.user-info .user-role {
    font-size: 0.7rem;
    color: var(--text-secondary);
    text-transform: uppercase;
}

/* ===== CONTENT AREA ===== */
.content-area {
    padding: 25px;
}

/* ===== STAT CARDS ===== */
.stat-card {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    padding: 24px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.stat-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
}

.stat-card.border-primary::before { background: var(--primary); }
.stat-card.border-success::before { background: var(--success); }
.stat-card.border-info::before { background: var(--info); }
.stat-card.border-warning::before { background: var(--warning); }
.stat-card.border-danger::before { background: var(--danger); }

.stat-card .stat-icon {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
}

.stat-card .stat-icon.bg-primary-soft {
    background: rgba(78, 115, 223, 0.1);
    color: var(--primary);
}
.stat-card .stat-icon.bg-success-soft {
    background: rgba(28, 200, 138, 0.1);
    color: var(--success);
}
.stat-card .stat-icon.bg-info-soft {
    background: rgba(54, 185, 204, 0.1);
    color: var(--info);
}
.stat-card .stat-icon.bg-warning-soft {
    background: rgba(246, 194, 62, 0.1);
    color: var(--warning);
}
.stat-card .stat-icon.bg-danger-soft {
    background: rgba(231, 74, 59, 0.1);
    color: var(--danger);
}

.stat-card .stat-value {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
}

.stat-card .stat-label {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    margin-top: 4px;
}

/* ===== CARDS ===== */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.card-header {
    background: transparent;
    border-bottom: 1px solid var(--border-color);
    padding: 18px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-header h5, .card-header h6 {
    margin: 0;
    font-weight: 600;
    color: var(--text-primary);
}

.card-body {
    padding: 24px;
}

/* ===== TABLE ===== */
.table {
    color: var(--text-primary);
}

.table thead th {
    border-bottom: 2px solid var(--border-color);
    font-size: 0.78rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    padding: 12px 16px;
    white-space: nowrap;
}

.table tbody td {
    border-bottom: 1px solid var(--border-color);
    padding: 12px 16px;
    vertical-align: middle;
    font-size: 0.9rem;
}

.table tbody tr:hover {
    background: rgba(78, 115, 223, 0.03);
}

/* ===== FORMS ===== */
.form-control, .form-select {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 10px 14px;
    font-size: 0.9rem;
    color: var(--text-primary);
    background-color: var(--bg-card);
    transition: var(--transition);
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(78, 115, 223, 0.15);
    background-color: var(--bg-card);
    color: var(--text-primary);
}

.form-label {
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.form-section-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--primary);
    padding-bottom: 10px;
    margin-bottom: 20px;
    margin-top: 10px;
    border-bottom: 2px solid rgba(78, 115, 223, 0.2);
    display: flex;
    align-items: center;
    gap: 8px;
}

/* ===== BUTTONS ===== */
.btn {
    border-radius: 8px;
    padding: 8px 20px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border: none;
    box-shadow: 0 4px 12px rgba(78, 115, 223, 0.25);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(78, 115, 223, 0.35);
}

.btn-success {
    background: linear-gradient(135deg, #1cc88a, #17a673);
    border: none;
}

.btn-danger {
    background: linear-gradient(135deg, #e74a3b, #c0392b);
    border: none;
}

.btn-outline-primary {
    border: 2px solid var(--primary);
    color: var(--primary);
}

.btn-sm {
    padding: 5px 12px;
    font-size: 0.8rem;
}

/* ===== BADGES ===== */
.badge {
    padding: 5px 12px;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.75rem;
}

/* ===== ALERTS ===== */
.alert {
    border: none;
    border-radius: 10px;
    padding: 14px 20px;
    font-size: 0.9rem;
}

/* ===== MODAL ===== */
.modal-content {
    border: none;
    border-radius: var(--border-radius);
    background: var(--bg-card);
    box-shadow: var(--shadow-lg);
}

.modal-header {
    border-bottom: 1px solid var(--border-color);
    padding: 18px 24px;
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    border-top: 1px solid var(--border-color);
    padding: 14px 24px;
}

/* ===== WALLET CARD ===== */
.wallet-card {
    background: linear-gradient(135deg, var(--primary) 0%, #667eea 50%, #764ba2 100%);
    border-radius: 16px;
    padding: 30px;
    color: #fff;
    position: relative;
    overflow: hidden;
}

.wallet-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
}

.wallet-balance {
    font-size: 2.5rem;
    font-weight: 800;
}

/* ===== LOGIN PAGE ===== */
.login-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 20px;
}

.login-card {
    background: var(--bg-card);
    border-radius: 20px;
    padding: 40px;
    width: 100%;
    max-width: 440px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}

.login-logo {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary);
    text-align: center;
}

.login-tagline {
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 30px;
}

/* ===== VERIFY PAGE ===== */
.verify-wrapper {
    min-height: 100vh;
    background: var(--bg-body);
    padding: 40px 20px;
}

.verify-card {
    max-width: 600px;
    margin: 0 auto;
}

.verify-result {
    padding: 30px;
    border-radius: var(--border-radius);
    text-align: center;
}

.verify-result.valid {
    background: rgba(28, 200, 138, 0.1);
    border: 2px solid var(--success);
}

.verify-result.invalid {
    background: rgba(231, 74, 59, 0.1);
    border: 2px solid var(--danger);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    .sidebar.mobile-open {
        transform: translateX(0);
    }
    .main-content {
        margin-left: 0 !important;
    }
    .content-area {
        padding: 15px;
    }
    .stat-card .stat-value {
        font-size: 1.4rem;
    }
    .user-info {
        display: none;
    }
}

/* ===== MOBILE OVERLAY ===== */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1049;
}

@media (max-width: 768px) {
    .sidebar.mobile-open + .sidebar-overlay {
        display: block;
    }
}

/* ===== CHART CONTAINER ===== */
.chart-container {
    position: relative;
    height: 300px;
    width: 100%;
}

/* ===== LOADING SPINNER ===== */
.spinner-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

/* ===== EMPTY STATE ===== */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

.empty-state i {
    font-size: 4rem;
    margin-bottom: 15px;
    opacity: 0.3;
}

/* ===== STUDENT VIEW ===== */
.student-photo-lg {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--primary);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.detail-label {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-secondary);
    letter-spacing: 0.5px;
}

.detail-value {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 15px;
}