/* Custom Styles for Video Class Subscription System */

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f5f5f5;
}

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

.login-page .card {
    border: none;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.login-page .card-body {
    padding: 3rem;
}

/* Dashboard Cards */
.card {
    border: none;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
}

.card-img-top {
    border-top-left-radius: 10px;
    border-top-right-radius: 10px;
}

/* Sidebar */
.sidebar {
    position: sticky;
    top: 56px;
    height: calc(100vh - 56px);
    padding-top: 1rem;
    overflow-y: auto;
    background-color: #f8f9fa;
    border-right: 1px solid #dee2e6;
}

.sidebar .nav-link {
    color: #495057;
    padding: 0.75rem 1rem;
    border-radius: 5px;
    margin: 0.25rem 0;
    transition: background-color 0.2s;
}

.sidebar .nav-link:hover {
    background-color: #e9ecef;
    color: #0d6efd;
}

.sidebar .nav-link.active {
    background-color: #0d6efd;
    color: white;
}

.sidebar .nav-link i {
    margin-right: 0.5rem;
}

/* Tables */
.table {
    background-color: white;
    border-radius: 10px;
    overflow: hidden;
}

.table thead {
    background-color: #f8f9fa;
}

.table tbody tr:hover {
    background-color: #f8f9fa;
}

/* Buttons */
.btn {
    border-radius: 5px;
    padding: 0.5rem 1rem;
    transition: all 0.2s;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

/* Forms */
.form-control,
.form-select {
    border-radius: 5px;
    border: 1px solid #ced4da;
    padding: 0.5rem 0.75rem;
}

.form-control:focus,
.form-select:focus {
    border-color: #0d6efd;
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.25);
}

/* Alerts */
.alert {
    border-radius: 10px;
    border: none;
}

/* Course Cards */
.course-card {
    transition: transform 0.2s;
}

.course-card:hover {
    transform: scale(1.02);
}

/* Video Player */
video {
    border-radius: 10px;
    background: #000;
}

.video-player-container {
    position: relative;
    background: #000;
}

.video-player-container video {
    width: 100%;
    height: auto;
    max-height: 80vh;
}

/* Accordion */
.accordion-button {
    font-weight: 500;
}

.accordion-button:not(.collapsed) {
    background-color: #e7f1ff;
    color: #0d6efd;
}

/* Badges */
.badge {
    padding: 0.35em 0.65em;
    border-radius: 5px;
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        height: auto;
        position: relative;
        top: 0;
    }

    .login-page .card-body {
        padding: 2rem;
    }
}

/* Loading Spinner */
.spinner-border-sm {
    width: 1rem;
    height: 1rem;
}

/* Course Thumbnail */
.course-thumbnail {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 10px;
}

/* Statistics Cards */
.stat-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 15px;
    padding: 2rem;
    margin-bottom: 1rem;
}

.stat-card h3 {
    font-size: 2.5rem;
    font-weight: bold;
    margin: 0;
}

.stat-card p {
    margin: 0.5rem 0 0 0;
    opacity: 0.9;
}