/* Premium Light Design System - Bakı Nitq Mərkəzi */
/* Inspired by the clean, lavender-indigo educational mockup */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

:root {
    --bg-primary: #f5f6fa;       /* Soft lavender-grey background */
    --bg-secondary: #ffffff;     /* Pure white for cards, sidebar, table */
    --bg-tertiary: #f8fafc;      /* Very light slate for inputs, section titles */
    --accent: #4f46e5;           /* Indigo / Violet */
    --accent-hover: #4338ca;
    --accent-glow: rgba(79, 70, 229, 0.08);
    --text-primary: #1e293b;     /* Dark slate for main text */
    --text-secondary: #64748b;   /* Slate grey for secondary text */
    --text-muted: #94a3b8;       /* Light grey for captions / icons */
    --border-color: #f1f5f9;     /* Ultra thin, soft border color */
    
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    
    --sidebar-width: 260px;
    --header-height: 70px;
    
    --font-main: 'Plus Jakarta Sans', sans-serif;
    --transition-speed: 0.25s;
    --border-radius: 12px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
    background: var(--text-muted);
    border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--accent);
}

/* Layout */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar Styling (Pure White, clean lines, responsive via offcanvas) */
.sidebar {
    background-color: var(--bg-secondary) !important;
    border-right: 1px solid var(--border-color) !important;
    display: flex;
    flex-direction: column;
    z-index: 1045; /* Bootstrap offcanvas z-index */
    transition: var(--transition-speed) ease-in-out;
}

@media (min-width: 992px) {
    .sidebar {
        width: var(--sidebar-width) !important;
        transform: none !important;
        visibility: visible !important;
        position: fixed !important;
        height: 100vh !important;
        border-right: 1px solid var(--border-color) !important;
    }
}
@media (max-width: 991.98px) {
    .sidebar {
        width: var(--sidebar-width) !important;
    }
}

.sidebar-logo {
    height: var(--header-height);
    display: flex;
    align-items: center;
    padding: 0 24px;
    border-bottom: 1px solid var(--border-color);
}

.logo-text {
    font-size: 1.35rem;
    font-weight: 800;
    color: #0f172a;
    display: flex;
    align-items: center;
    gap: 8px;
    letter-spacing: -0.5px;
}

.logo-text i {
    color: var(--accent);
}

.sidebar-menu {
    list-style: none;
    padding: 24px 16px;
    flex: 1;
    overflow-y: auto;
}

.menu-section {
    font-size: 0.72rem;
    font-weight: 800;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 12px;
    margin-top: 24px;
    padding-left: 8px;
    letter-spacing: 1px;
}

.menu-section:first-child {
    margin-top: 0;
}

.sidebar-menu li {
    margin-bottom: 6px;
}

.sidebar-menu a {
    display: flex;
    align-items: center;
    padding: 10px 14px;
    border-radius: 10px;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.9rem;
    transition: all var(--transition-speed);
}

.sidebar-menu a:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

.sidebar-menu li.active a {
    background-color: var(--accent);
    color: #ffffff;
}

.sidebar-menu a i {
    margin-right: 12px;
    font-size: 1.1rem;
    width: 20px;
    text-align: center;
    color: var(--text-secondary);
    transition: color var(--transition-speed);
}

.sidebar-menu li.active a i {
    color: #ffffff;
}

.sidebar-footer {
    padding: 16px;
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-tertiary);
}

.user-info {
    display: flex;
    align-items: center;
}

.user-avatar {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background-color: var(--accent-glow);
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    margin-right: 12px;
    border: 2px solid var(--border-color);
}

.user-details {
    flex: 1;
    overflow: hidden;
}

.user-name {
    font-size: 0.85rem;
    font-weight: 700;
    color: #0f172a;
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
}

.user-role {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Main Content Layout */
.main-wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    transition: var(--transition-speed) ease-in-out;
}

@media (min-width: 992px) {
    .main-wrapper {
        margin-left: var(--sidebar-width) !important;
    }
}
@media (max-width: 991.98px) {
    .main-wrapper {
        margin-left: 0 !important;
    }
}

/* Top Header */
.top-header {
    height: var(--header-height);
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 32px;
    position: sticky;
    top: 0;
    z-index: 99;
}

.page-title {
    font-size: 1.35rem;
    font-weight: 800;
    color: #0f172a;
    letter-spacing: -0.3px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.btn-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--bg-secondary);
    border: 1px solid #e2e8f0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    cursor: pointer;
    position: relative;
    transition: all var(--transition-speed);
}

.btn-icon:hover {
    color: var(--accent);
    border-color: var(--accent);
    background-color: var(--accent-glow);
}

.badge {
    position: absolute;
    top: 2px;
    right: 2px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--danger);
    border: 1.5px solid #ffffff;
}

/* Content Container */
.content-body {
    padding: 32px;
    flex: 1;
}

/* Grid System */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
    margin-bottom: 32px;
}

/* Card Styling (Clean, White, rounded, elegant shadow) */
.card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 24px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.02), 0 2px 4px -1px rgba(0, 0, 0, 0.01);
    transition: all var(--transition-speed);
}

.card:hover {
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.04), 0 4px 6px -2px rgba(0, 0, 0, 0.02);
}

/* Stats Card Specific */
.stat-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.stat-info h3 {
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
}

.stat-number {
    font-size: 1.75rem;
    font-weight: 800;
    color: #0f172a;
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background-color: var(--accent-glow);
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.35rem;
    border: 1px solid rgba(79, 70, 229, 0.05);
}

.stat-icon.green { background-color: rgba(16, 185, 129, 0.06); color: var(--success); }
.stat-icon.orange { background-color: rgba(245, 158, 11, 0.06); color: var(--warning); }
.stat-icon.red { background-color: rgba(239, 68, 68, 0.06); color: var(--danger); }

/* Dashboard Grids */
.dashboard-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 24px;
}

@media (max-width: 1024px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
}

.card-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: #0f172a;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 18px;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.88rem;
    cursor: pointer;
    transition: all var(--transition-speed);
    border: none;
    gap: 8px;
}

.btn-primary {
    background-color: var(--accent);
    color: #fff;
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.2);
}

.btn-secondary {
    background-color: #ffffff;
    color: var(--text-primary);
    border: 1px solid #e2e8f0;
}

.btn-secondary:hover {
    background-color: var(--bg-tertiary);
    border-color: #cbd5e1;
}

.btn-danger {
    background-color: rgba(239, 68, 68, 0.08);
    color: var(--danger);
}

.btn-danger:hover {
    background-color: var(--danger);
    color: #ffffff;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.8rem;
    border-radius: 8px;
}

/* Tables (Modern borderless aesthetic) */
.table-responsive {
    width: 100%;
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

th, td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.88rem;
}

th {
    font-weight: 700;
    color: var(--text-secondary);
    background-color: var(--bg-tertiary);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

tr:hover td {
    background-color: rgba(79, 70, 229, 0.015);
}

/* Badges */
.status-badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: 50px;
    font-size: 0.72rem;
    font-weight: 700;
}

.status-badge.active, .status-badge.present, .status-badge.sent, .status-badge.converted {
    background-color: rgba(16, 185, 129, 0.08);
    color: var(--success);
}

.status-badge.inactive, .status-badge.absent, .status-badge.failed, .status-badge.canceled {
    background-color: rgba(239, 68, 68, 0.08);
    color: var(--danger);
}

.status-badge.paused, .status-badge.excused, .status-badge.pending, .status-badge.scheduled {
    background-color: rgba(245, 158, 11, 0.08);
    color: var(--warning);
}

/* Forms */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.form-control {
    width: 100%;
    background-color: var(--bg-tertiary);
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    padding: 10px 14px;
    color: var(--text-primary);
    font-family: var(--font-main);
    font-size: 0.92rem;
    transition: all var(--transition-speed);
}

.form-control:focus {
    outline: none;
    border-color: var(--accent);
    background-color: #ffffff;
    box-shadow: 0 0 0 3px var(--accent-glow);
}

textarea.form-control {
    resize: vertical;
    min-height: 100px;
}

/* Login Page Styling */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient(circle at top right, rgba(79, 70, 229, 0.05), transparent 45%),
                radial-gradient(circle at bottom left, rgba(16, 185, 129, 0.02), transparent 40%),
                var(--bg-primary);
    padding: 20px;
}

.login-box {
    width: 100%;
    max-width: 420px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 40px;
    box-shadow: 0 20px 25px -5px rgba(0,0,0,0.05), 0 10px 10px -5px rgba(0,0,0,0.02);
}

.login-header {
    text-align: center;
    margin-bottom: 32px;
}

.login-logo {
    font-size: 1.6rem;
    font-weight: 800;
    color: #0f172a;
    margin-bottom: 8px;
}

.login-logo i {
    color: var(--accent);
}

.login-subtitle {
    color: var(--text-secondary);
    font-size: 0.88rem;
    font-weight: 500;
}

/* Alert Boxes */
.alert {
    padding: 14px;
    border-radius: 10px;
    margin-bottom: 24px;
    font-size: 0.88rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    border: 1px solid transparent;
}

.alert-success {
    background-color: rgba(16, 185, 129, 0.08);
    border-color: rgba(16, 185, 129, 0.1);
    color: var(--success);
}

.alert-danger {
    background-color: rgba(239, 68, 68, 0.08);
    border-color: rgba(239, 68, 68, 0.1);
    color: var(--danger);
}

/* AI Chat Assistant Styling (Soft colors) */
.ai-chat-wrapper {
    display: flex;
    flex-direction: column;
    height: calc(100vh - 170px);
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.ai-chat-messages {
    flex: 1;
    padding: 24px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
    background-color: #fafbfc;
}

.chat-message {
    max-width: 80%;
    padding: 12px 18px;
    border-radius: 16px;
    font-size: 0.92rem;
    line-height: 1.5;
}

.chat-message.user {
    background-color: var(--accent);
    color: #ffffff;
    align-self: flex-end;
    border-bottom-right-radius: 4px;
    box-shadow: 0 4px 6px -1px rgba(79, 70, 229, 0.1);
}

.chat-message.bot {
    background-color: #ffffff;
    color: var(--text-primary);
    align-self: flex-start;
    border-bottom-left-radius: 4px;
    border: 1px solid #e2e8f0;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.01);
}

.chat-message pre {
    background-color: #f8fafc;
    border: 1px solid #e2e8f0;
    padding: 12px;
    border-radius: 8px;
    margin-top: 10px;
    overflow-x: auto;
    font-family: monospace;
    font-size: 0.82rem;
    color: #0f172a;
}

.ai-chat-input-area {
    padding: 20px;
    border-top: 1px solid var(--border-color);
    background-color: #ffffff;
    display: flex;
    gap: 12px;
}

/* Modal Styling */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(15, 23, 42, 0.3); /* Smooth blur backdrop */
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-speed);
}

.modal.active {
    opacity: 1;
    pointer-events: auto;
}

.modal-content {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    width: 100%;
    max-width: 500px;
    padding: 32px;
    position: relative;
    transform: translateY(-20px);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.1);
    transition: transform var(--transition-speed);
}

.modal.active .modal-content {
    transform: translateY(0);
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 1.5rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: color var(--transition-speed);
}

.modal-close:hover {
    color: var(--text-primary);
}

/* Page Header component */
.page-action-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

/* Filter bar components */
.filter-bar {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}
.filter-bar .form-control {
    width: auto;
    min-width: 200px;
}
.filter-bar .btn {
    height: 42px;
}

/* Sidebar Collapsibles & Today's Trainers Styling */
.menu-section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-size: 0.72rem;
    font-weight: 800;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 12px;
    margin-top: 24px;
    padding: 6px 8px;
    letter-spacing: 1px;
    user-select: none;
    transition: color var(--transition-speed);
}
.menu-section-header:hover {
    color: var(--text-primary);
}
.menu-section-header .toggle-icon {
    font-size: 0.75rem;
    transition: transform var(--transition-speed) ease;
}
.menu-section-header[aria-expanded="false"] .toggle-icon {
    transform: rotate(-90deg);
}
.submenu {
    list-style: none;
    padding-left: 0;
    margin-bottom: 0;
}
.menu-section-wrapper {
    list-style: none;
}
.menu-section-wrapper:first-child .menu-section-header {
    margin-top: 0;
}
.today-teachers-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.today-teacher-item {
    cursor: pointer;
    transition: background-color var(--transition-speed), transform var(--transition-speed);
    border: 1px solid transparent;
}
.today-teacher-item:hover {
    background-color: var(--accent-glow) !important;
    border-color: var(--border-color);
    transform: translateX(4px);
}
.cursor-pointer {
    cursor: pointer;
}