/* Custom styles for admin panel - Enhanced UI/UX */

:root {
    /* Telegram theme colors */
    --tg-theme-bg-color: #ffffff;
    --tg-theme-text-color: #000000;
    --tg-theme-button-color: #0088cc;
    --tg-theme-button-text-color: #ffffff;

    /* Custom color palette */
    --primary-color: #0088cc;
    --primary-dark: #006699;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --info-color: #17a2b8;
    --light-bg: #f8f9fa;
    --border-color: #dee2e6;

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.12);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.15);

    /* Transitions */
    --transition-fast: 0.15s ease-in-out;
    --transition-normal: 0.3s ease-in-out;
}

/* Base styles */
* {
    box-sizing: border-box;
}

body {
    background-color: var(--light-bg);
    color: var(--tg-theme-text-color);
    min-height: 100vh;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Enhanced navbar */
.navbar {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%) !important;
    box-shadow: var(--shadow-md);
    padding: 1rem 0;
}

.navbar-brand {
    font-weight: 600;
    font-size: 1.25rem;
    transition: transform var(--transition-fast);
}

.navbar-brand:hover {
    transform: scale(1.05);
}

.nav-link {
    transition: all var(--transition-fast);
    border-radius: 0.375rem;
    margin: 0 0.25rem;
    padding: 0.5rem 1rem !important;
}

.nav-link:hover {
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.nav-link.active {
    background-color: rgba(255, 255, 255, 0.2);
}

/* Cards */
.card {
    border: none;
    border-radius: 1rem;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    overflow: hidden;
}

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

.card-header {
    background: linear-gradient(135deg, var(--light-bg) 0%, #e9ecef 100%);
    border-bottom: 2px solid var(--primary-color);
    padding: 1rem 1.5rem;
    font-weight: 600;
}

/* Stats cards */
.stats-card {
    border-left: 5px solid var(--primary-color);
    transition: all var(--transition-normal);
    cursor: pointer;
    background: white;
}

.stats-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-left-color: var(--primary-dark);
}

.stats-card h2 {
    font-weight: 700;
    color: var(--primary-color);
    font-size: 2.5rem;
}

.stats-card .bg-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%) !important;
}

.stats-card .bg-success {
    background: linear-gradient(135deg, #28a745 0%, #1e7e34 100%) !important;
}

.stats-card .bg-warning {
    background: linear-gradient(135deg, #ffc107 0%, #e0a800 100%) !important;
}

.stats-card .bg-info {
    background: linear-gradient(135deg, #17a2b8 0%, #117a8b 100%) !important;
}

/* Badges */
.badge {
    padding: 0.5em 0.75em;
    font-weight: 600;
    border-radius: 0.5rem;
}

.badge-at-work {
    background-color: var(--success-color);
    animation: pulse 2s infinite;
    box-shadow: 0 0 10px rgba(40, 167, 69, 0.4);
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.8;
        transform: scale(1.05);
    }
}

/* Status indicators */
.status-present {
    color: var(--success-color);
    font-weight: 700;
    display: inline-flex;
    align-items: center;
}

.status-present::before {
    content: "●";
    margin-right: 0.5rem;
    font-size: 1.2rem;
}

.status-absent {
    color: var(--danger-color);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
}

.status-absent::before {
    content: "●";
    margin-right: 0.5rem;
    font-size: 1.2rem;
}

.status-incomplete {
    color: var(--warning-color);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
}

.status-incomplete::before {
    content: "●";
    margin-right: 0.5rem;
    font-size: 1.2rem;
}

/* Login page */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    position: relative;
    overflow: hidden;
}

.login-container::before {
    content: "";
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: moveBackground 20s linear infinite;
}

@keyframes moveBackground {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

.login-card {
    max-width: 400px;
    width: 100%;
    position: relative;
    z-index: 1;
}

.login-card .card {
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.95);
}

/* Tables */
.table {
    margin-bottom: 0;
}

.table thead th {
    border-bottom: 2px solid var(--primary-color);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.875rem;
    letter-spacing: 0.5px;
    color: var(--primary-dark);
}

.table-striped tbody tr:nth-of-type(odd) {
    background-color: rgba(0, 136, 204, 0.03);
}

.table-hover tbody tr:hover {
    background-color: rgba(0, 136, 204, 0.08);
    cursor: pointer;
}

.table-responsive {
    border-radius: 1rem;
    overflow: hidden;
}

/* Buttons */
.btn {
    border-radius: 0.5rem;
    padding: 0.625rem 1.25rem;
    font-weight: 600;
    transition: all var(--transition-normal);
    border: none;
    box-shadow: var(--shadow-sm);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn:active {
    transform: translateY(0);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-dark) 0%, #004d73 100%);
}

.btn-success {
    background: linear-gradient(135deg, #28a745 0%, #1e7e34 100%);
}

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

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

/* Forms */
.form-control, .form-select {
    border-radius: 0.5rem;
    border: 2px solid var(--border-color);
    padding: 0.75rem 1rem;
    transition: all var(--transition-fast);
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(0, 136, 204, 0.25);
}

/* Ticket cards */
.ticket-card {
    transition: all var(--transition-normal);
    border-left: 4px solid var(--info-color);
    background: white;
}

.ticket-card:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-md);
    border-left-color: var(--primary-color);
}

/* Message bubbles */
.message-bubble {
    max-width: 75%;
    padding: 1rem 1.25rem;
    border-radius: 1.25rem;
    margin-bottom: 1rem;
    animation: slideIn 0.3s ease-out;
    word-wrap: break-word;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message-from-student {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    margin-right: auto;
    border-bottom-left-radius: 0.25rem;
    box-shadow: var(--shadow-sm);
}

.message-from-admin {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    margin-left: auto;
    border-bottom-right-radius: 0.25rem;
    box-shadow: var(--shadow-sm);
}

/* Alerts */
.alert {
    border-radius: 0.75rem;
    border: none;
    box-shadow: var(--shadow-sm);
}

/* Loading spinner */
.spinner-border {
    border-width: 3px;
}

/* Scroll to top button */
.scroll-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
    z-index: 1000;
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

/* Mobile responsive */
@media (max-width: 768px) {
    .stats-card h2 {
        font-size: 2rem;
    }

    .message-bubble {
        max-width: 90%;
    }

    .navbar-collapse {
        background: rgba(0, 0, 0, 0.05);
        border-radius: 0.5rem;
        margin-top: 1rem;
        padding: 1rem;
    }
}

/* Print styles */
@media print {
    .navbar, .btn, .scroll-top {
        display: none !important;
    }

    .card {
        box-shadow: none;
        border: 1px solid var(--border-color);
    }
}