/* =========================================================
   courses.css - Styles for Courses and Cart pages
   Premium Black & Gold Theme (CodeByTushu)
========================================================= */

:root {
    --primary: var(--accent);
    --bg-main: #0a0a0a;
    --bg-card: #111;
    --bg-card-hover: #1a1a1a;
    --text-main: #f5f5f5;
    --text-muted: #a0a0a0;
    --border-color: rgba(255, 196, 0, 0.2);
}

/* -------- Hero Section -------- */
.cbt-courses-hero {
    padding: 120px 20px 60px;
    background: transparent !important;
    position: relative;
    overflow: hidden;
    text-align: center;
}

.cbt-courses-hero h1 {
    font-size: 3rem;
    color: var(--text-heading);
    margin-bottom: 1rem;
    font-weight: 700;
}

.cbt-courses-hero h1 .highlight {
    color: var(--primary);
}

.cbt-courses-hero p {
    color: var(--text-muted);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto 2rem;
}

/* -------- Search & Filters -------- */
.cbt-courses-search {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 30px;
}

.cbt-courses-search input {
    width: 100%;
    max-width: 400px;
    padding: 12px 20px;
    border-radius: 8px;
    background: var(--bg-card-hover);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    font-family: inherit;
    font-size: 1rem;
    outline: none;
    transition: all 0.3s ease;
}

.cbt-courses-search input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 10px rgba(255, 196, 0, 0.2);
}

.cbt-courses-filters {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
}

.cbt-filter-btn {
    background: rgba(22, 22, 22, 0.5); /* Semi-transparent */
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 8px 16px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.95rem;
    transition: all 0.3s ease;
}

.cbt-filter-btn:hover,
.cbt-filter-btn.active {
    background: var(--primary);
    color: #111;
    border-color: var(--primary);
    font-weight: 600;
}

/* -------- Course Grid -------- */
.cbt-courses-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px 80px;
}

.cbt-section-title {
    font-size: 2rem;
    color: var(--text-heading);
    margin-bottom: 2rem;
    position: relative;
    display: inline-block;
}
.cbt-section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60%;
    height: 3px;
    background: var(--primary);
    border-radius: 2px;
}

.cbt-course-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 30px;
}

/* -------- Miscellaneous -------- */
.cbt-course-details-sidebar {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
    position: sticky;
    top: 100px;
}

/* Make footer translucent to show global fixed background */
.cbt-footer {
    background: rgba(8, 8, 8, 0.4) !important;
    backdrop-filter: blur(8px);
}
.cbt-copyright-strip {
    background: transparent !important;
}

/* -------- Course Card -------- */
.cbt-course-card {
    background: rgba(22, 22, 22, 0.5); /* Semi-transparent */
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
}

.cbt-course-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.4);
    border-color: rgba(255, 196, 0, 0.4);
}

.cbt-course-thumb {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-bottom: 1px solid var(--border-color);
}

.cbt-course-info {
    padding: 20px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.cbt-course-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 10px;
}

.cbt-course-category {
    background: rgba(255,196,0,0.1);
    color: var(--primary);
    padding: 2px 8px;
    border-radius: 4px;
    font-weight: 600;
}

.cbt-course-title {
    font-size: 1.25rem;
    color: var(--text-heading);
    margin-bottom: 10px;
    font-weight: 600;
    line-height: 1.4;
}

.cbt-course-desc {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 15px;
    line-height: 1.5;
    flex-grow: 1;
}

.cbt-course-details-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 15px;
    padding-top: 15px;
    border-top: 1px solid var(--border-color);
}

.cbt-course-price-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.cbt-course-price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}
.cbt-course-price.free {
    color: #4CAF50;
}

.cbt-course-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.cbt-btn {
    padding: 10px;
    text-align: center;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    border: none;
    font-family: inherit;
    font-size: 0.95rem;
}

.cbt-btn-primary {
    background: var(--primary);
    color: #111;
}
.cbt-btn-primary:hover {
    background: #e6b000;
    box-shadow: 0 4px 12px rgba(255,196,0,0.3);
}

.cbt-btn-outline {
    background: transparent;
    color: var(--primary);
    border: 1px solid var(--primary);
}
.cbt-btn-outline:hover {
    background: rgba(255,196,0,0.1);
}

/* -------- Cart Page -------- */
.cbt-cart-container {
    max-width: 900px;
    margin: 120px auto 80px;
    padding: 20px;
    min-height: 60vh;
}

.cbt-cart-list {
    background: var(--bg-card);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    padding: 20px;
    margin-bottom: 30px;
}

.cbt-cart-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 15px 0;
    border-bottom: 1px solid var(--border-color);
}
.cbt-cart-item:last-child {
    border-bottom: none;
}

.cbt-cart-item-img {
    width: 120px;
    height: 80px;
    object-fit: cover;
    border-radius: 8px;
}

.cbt-cart-item-info {
    flex-grow: 1;
}

.cbt-cart-item-title {
    font-size: 1.1rem;
    color: var(--text-heading);
    margin-bottom: 5px;
    font-weight: 600;
}

.cbt-cart-item-price {
    font-weight: 700;
    color: var(--primary);
}

.cbt-cart-remove {
    background: rgba(255,50,50,0.1);
    color: #ff5555;
    border: none;
    padding: 8px 12px;
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.3s;
}
.cbt-cart-remove:hover {
    background: rgba(255,50,50,0.2);
}

.cbt-cart-summary {
    background: var(--bg-card);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    padding: 30px;
    text-align: right;
}

.cbt-cart-total {
    font-size: 1.5rem;
    color: var(--text-heading);
    margin-bottom: 20px;
}
.cbt-cart-total span {
    font-weight: 700;
    color: var(--primary);
}

.cbt-empty-cart {
    text-align: center;
    padding: 50px 20px;
    color: var(--text-muted);
}
.cbt-empty-cart i {
    font-size: 4rem;
    margin-bottom: 15px;
    color: var(--border-color);
}

/* Nav Cart Counter */
.cbt-nav-cart-btn {
    position: relative;
    background: transparent;
    border: none;
    color: var(--text-main);
    font-size: 1.2rem;
    cursor: pointer;
    margin-left: 15px;
    display: inline-flex;
    align-items: center;
    text-decoration: none;
}
.cbt-nav-cart-btn:hover {
    color: var(--primary);
}
.cbt-cart-counter {
    position: absolute;
    top: -8px;
    right: -10px;
    background: var(--primary);
    color: #111;
    font-size: 0.7rem;
    font-weight: bold;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cbt-nav-right {
    display: flex;
    align-items: center;
}

/* -------- Mobile Responsiveness Adjustments -------- */
@media (max-width: 1024px) {
    /* Ensure right icons (cart, profile) are visible since we don't use mobile drawer here */
    .cbt-navbar .cbt-nav-right {
        display: flex !important;
    }
}

/* Base Cart Grid Layout */
.cbt-cart-grid-mobile {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 30px;
}
.cbt-cart-summary .cbt-btn {
    width: 100%;
    padding: 15px;
    font-size: 1.1rem;
}

@media (max-width: 768px) {
    /* Mobile Navbar Simplified */
    .cbt-center-nav,
    #cbt-auth-area {
        display: none !important;
    }
    
    .cbt-nav-inner {
        height: 60px !important;
        min-height: 60px;
        padding-bottom: 0;
        align-items: center;
    }
    /* Logo overrides removed to match main page */
    
    /* Hero Section */
    .cbt-courses-hero {
        padding: 100px 15px 40px;
    }
    .cbt-courses-hero h1 {
        font-size: 2rem;
        line-height: 1.2;
        margin-bottom: 0.8rem;
    }
    .cbt-courses-hero p {
        font-size: 0.95rem;
    }
    
    /* Search Bar */
    .cbt-courses-search {
        padding: 0 10px;
    }
    .cbt-courses-search input {
        max-width: 100%;
        font-size: 0.95rem;
    }
    
    /* Filters */
    .cbt-courses-filters {
        gap: 10px;
        padding: 0 10px;
        justify-content: center;
    }
    .cbt-filter-btn {
        padding: 6px 12px;
        font-size: 0.85rem;
    }
    
    /* Grid */
    .cbt-courses-container {
        padding-left: 15px;
        padding-right: 15px;
    }
    .cbt-course-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    /* Avoid any global horizontal overflow */
    body, html {
        overflow-x: hidden;
        width: 100%;
    }

    /* -------- Cart Mobile Layout -------- */
    .cbt-cart-item {
        display: grid;
        grid-template-columns: 80px 1fr auto;
        gap: 12px;
        padding: 15px 0;
        align-items: start;
    }
    .cbt-cart-item-img {
        width: 80px;
        height: 80px;
        grid-column: 1;
        grid-row: 1 / 3;
    }
    .cbt-cart-item-info {
        grid-column: 2;
        grid-row: 1;
        min-width: 0;
    }
    .cbt-cart-remove {
        grid-column: 3;
        grid-row: 1;
        padding: 6px 10px;
    }
    .cbt-cart-item-price {
        grid-column: 2 / 4;
        grid-row: 2;
        margin-top: 5px;
        text-align: left;
    }
    .cbt-cart-summary {
        text-align: center;
        padding: 20px;
    }
    
    /* Cart mobile single column */
    .cbt-cart-grid-mobile {
        grid-template-columns: 1fr;
    }
}