/*
Theme Name: SVLMS Modern
Theme URI: https://example.com/svlms-modern
Description: Modern and clean theme for Simple Video LMS
Version: 1.0.0
Author: Güray ARIK
License: GPL2
*/

:root {
    --primary: #0066cc;
    --primary-dark: #0052a3;
    --secondary: #f5f7fa;
    --text-dark: #1a1a1a;
    --text-light: #666;
    --border: #e0e0e0;
    --success: #28a745;
    --warning: #ffc107;
    --danger: #dc3545;
}

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

html, body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-dark);
    background: #fff;
}

body {
    line-height: 1.6;
    font-size: 15px;
}

/* ========== HEADER ========== */
.site-header {
    background: linear-gradient(135deg, var(--primary) 0%, #0052a3 100%);
    color: #fff;
    padding: 1rem 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.site-logo {
    font-size: 24px;
    font-weight: 700;
    text-decoration: none;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 10px;
}

.site-logo::before {
    content: '▶';
    font-size: 20px;
}

.header-nav {
    display: flex;
    gap: 30px;
    align-items: center;
}

.header-nav a {
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    transition: opacity 0.3s;
}

.header-nav a:hover {
    opacity: 0.8;
}

/* ========== CONTAINER ========== */
.site-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
}

.container {
    max-width: 100%;
}

/* ========== COURSE DASHBOARD ========== */
.svlms-dashboard {
    margin-bottom: 40px;
}

.svlms-dashboard h2 {
    font-size: 32px;
    margin-bottom: 10px;
    color: var(--text-dark);
}

.dashboard-subtitle {
    color: var(--text-light);
    margin-bottom: 30px;
    font-size: 16px;
}

.svlms-courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 25px;
    margin-top: 30px;
}

.svlms-course-card {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.svlms-course-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 30px rgba(0,102,204,0.15);
    border-color: var(--primary);
}

.svlms-course-image {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, var(--primary) 0%, #0052a3 100%);
    overflow: hidden;
    position: relative;
}

.svlms-course-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.svlms-course-image::after {
    content: '▶';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 50px;
    color: rgba(255,255,255,0.3);
}

.svlms-course-content {
    padding: 25px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.svlms-course-content h3 {
    font-size: 20px;
    margin-bottom: 12px;
    color: var(--text-dark);
    line-height: 1.4;
}

.svlms-course-content p {
    color: var(--text-light);
    font-size: 14px;
    margin-bottom: 12px;
}

.course-meta {
    display: flex;
    gap: 15px;
    margin: 15px 0;
    font-size: 14px;
    color: var(--text-light);
}

.course-meta span {
    display: flex;
    align-items: center;
    gap: 5px;
}

.svlms-course-content .svlms-btn-primary {
    margin-top: auto;
}

/* ========== BUTTONS ========== */
.svlms-btn-primary {
    display: inline-block;
    background: var(--primary);
    color: #fff;
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    text-align: center;
}

.svlms-btn-primary:hover {
    background: var(--primary-dark);
    transform: translateX(2px);
}

.svlms-btn-secondary {
    background: var(--secondary);
    color: var(--primary);
    border: 1px solid var(--border);
}

.svlms-btn-secondary:hover {
    background: #e8eef5;
}

/* ========== COURSE STRUCTURE ========== */
.svlms-course-structure {
    margin: 40px 0;
}

.svlms-section-block {
    margin-bottom: 35px;
    background: #fff;
    border-radius: 12px;
    border-left: 4px solid var(--primary);
    padding: 25px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.svlms-section-block h3 {
    font-size: 22px;
    margin-bottom: 20px;
    color: var(--text-dark);
    display: flex;
    align-items: center;
    gap: 10px;
}

.svlms-section-block h3::before {
    content: '📚';
    font-size: 20px;
}

.svlms-lessons-list {
    list-style: none;
}

.svlms-lessons-list li {
    padding: 15px;
    margin-bottom: 10px;
    background: var(--secondary);
    border-radius: 8px;
    border-left: 3px solid var(--primary);
    transition: all 0.3s;
}

.svlms-lessons-list li:hover {
    background: #e8eef5;
    transform: translateX(5px);
}

.svlms-lessons-list a {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.svlms-lessons-list a:hover {
    color: var(--primary);
}

.svlms-lessons-list small {
    display: block;
    color: var(--text-light);
    margin-top: 5px;
    font-size: 13px;
}

.lesson-meta {
    display: flex;
    gap: 15px;
    font-size: 13px;
    color: var(--text-light);
}

/* ========== LESSON PAGE ========== */
.lesson-content-wrapper {
    margin: 40px 0;
}

.lesson-header {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--border);
}

.lesson-header h1 {
    font-size: 36px;
    margin-bottom: 12px;
    color: var(--text-dark);
}

.lesson-breadcrumb {
    color: var(--text-light);
    font-size: 14px;
    margin-bottom: 15px;
}

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

.lesson-breadcrumb a:hover {
    text-decoration: underline;
}

.lesson-body {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 40px;
    margin: 40px 0;
}

.lesson-main {
    background: #fff;
}

.lesson-sidebar {
    background: var(--secondary);
    padding: 25px;
    border-radius: 12px;
    height: fit-content;
    position: sticky;
    top: 80px;
}

.lesson-sidebar h4 {
    font-size: 18px;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.lesson-sidebar ul {
    list-style: none;
}

.lesson-sidebar li {
    padding: 10px 0;
    border-bottom: 1px solid #ddd;
}

.lesson-sidebar li:last-child {
    border-bottom: none;
}

.lesson-sidebar a {
    color: var(--text-dark);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s;
}

.lesson-sidebar a:hover,
.lesson-sidebar li.active a {
    color: var(--primary);
    font-weight: 600;
}

/* ========== VIDEO CONTAINER ========== */
.svlms-video-wrapper {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%;
    margin-bottom: 30px;
    background: #000;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 8px 20px rgba(0,0,0,0.15);
}

.svlms-video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* ========== QUIZ & CONTENT ========== */
.svlms-section {
    margin: 30px 0;
    padding: 25px;
    background: var(--secondary);
    border-radius: 12px;
    border-left: 4px solid var(--primary);
}

.svlms-section h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.svlms-quiz-content,
.svlms-files {
    color: var(--text-dark);
}

.svlms-files ul {
    list-style: none;
    padding: 0;
}

.svlms-files li {
    padding: 12px;
    margin-bottom: 10px;
    background: #fff;
    border-radius: 8px;
    border-left: 3px solid var(--success);
}

.svlms-files a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s;
}

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

/* ========== NAVIGATION ========== */
.svlms-lesson-nav {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    margin: 40px 0;
    padding-top: 30px;
    border-top: 2px solid var(--border);
}

.svlms-btn-nav {
    flex: 1;
    padding: 15px 25px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    text-align: center;
    border: 2px solid var(--border);
    color: var(--text-dark);
}

.svlms-btn-nav:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

/* ========== FOOTER ========== */
.site-footer {
    background: #1a1a1a;
    color: #fff;
    padding: 50px 20px 20px;
    margin-top: 60px;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    font-size: 16px;
    margin-bottom: 15px;
}

.footer-section ul {
    list-style: none;
}

.footer-section li {
    margin-bottom: 10px;
}

.footer-section a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-section a:hover {
    color: var(--primary);
}

.footer-bottom {
    border-top: 1px solid #333;
    padding-top: 20px;
    text-align: center;
    color: #999;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
    .header-nav {
        gap: 15px;
    }

    .svlms-courses-grid {
        grid-template-columns: 1fr;
    }

    .lesson-body {
        grid-template-columns: 1fr;
    }

    .lesson-sidebar {
        position: relative;
        top: 0;
    }

    .lesson-header h1 {
        font-size: 24px;
    }

    .svlms-lesson-nav {
        flex-direction: column;
    }

    .svlms-section-block h3 {
        font-size: 18px;
    }
}

@media (max-width: 480px) {
    .site-container {
        padding: 20px 15px;
    }

    .svlms-dashboard h2 {
        font-size: 24px;
    }

    .svlms-course-content {
        padding: 20px;
    }

    .lesson-main {
        padding: 0;
    }
}