/* =============================================
 * Coded By - DARK LMNx9 (Limon Hossain)
 * GitHub - https://github.com/LMNx9-JOHNY
 * Website - https://dark.lmnx9.workers.dev
 * WhatsApp - https://wa.me/+8801882168975
 * Telegram - https://t.me/x_LMNx9
============================================= */
:root {
    --hb-primary: #1b4d3e;
    --hb-dark-green: #0f3a2e;
    --hb-purple: #800080;
    --hb-deep-pink: #ff1493;
    --hb-purple-light: #f3e8f3;
    --hb-pink-light: #fff0f7;
    --hb-primary-light: #e8f3ef;

    --text-dark: #1a1a1a;
    --text-light: #4a4a4a;
    --text-muted: #666666;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --border-light: #e1e1e1;

    --shadow-sm: 0 5px 15px rgba(27, 77, 62, 0.08);
    --shadow-md: 0 10px 25px rgba(128, 0, 128, 0.1);
    --shadow-lg: 0 20px 40px rgba(255, 20, 147, 0.15);
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Mina", sans-serif;
}

body {
    background-color: var(--bg-light);
    padding-top: 80px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.main-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.98);
    z-index: 9999;
    padding: clamp(8px, 2vw, 12px) clamp(16px, 4vw, 24px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    display: flex;
    align-items: center;
    justify-content: space-between;
    backdrop-filter: blur(10px);
}

#LOGO {
    width: clamp(80px, 15vw, 140px);
    height: auto;
    transition: var(--transition);
}

#LOGO:hover {
    transform: scale(1.05);
}

.profile-img {
    width: clamp(36px, 8vw, 44px);
    height: clamp(36px, 8vw, 44px);
    border-radius: 50%;
    border: 2px solid var(--hb-primary);
    object-fit: cover;
    transition: var(--transition);
    box-shadow: 0 2px 8px rgba(27, 77, 62, 0.2);
}

.profile-img:hover {
    transform: scale(1.1);
    border-color: var(--hb-deep-pink);
    box-shadow: 0 4px 12px rgba(255, 20, 147, 0.3);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: clamp(15px, 3vw, 20px);
    width: 100%;
}

.page-header {
    text-align: center;
    margin-bottom: clamp(20px, 4vw, 30px);
    padding: clamp(20px, 4vw, 30px) clamp(15px, 3vw, 20px);
    background: linear-gradient(135deg, var(--bg-white), var(--bg-light));
    border-radius: clamp(20px, 5vw, 30px);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-light);
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: "";
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(
        circle,
        rgba(27, 77, 62, 0.03) 0%,
        rgba(128, 0, 128, 0.02) 50%,
        rgba(255, 20, 147, 0.01) 100%
    );
    animation: rotate 30s linear infinite;
}

@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.page-header h1 {
    font-size: clamp(24px, 6vw, 36px);
    font-weight: 800;
    background: linear-gradient(
        135deg,
        var(--hb-primary),
        var(--hb-purple),
        var(--hb-deep-pink)
    );
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 10px 0;
    position: relative;
}

.page-header .subtitle {
    font-size: clamp(14px, 3.5vw, 18px);
    color: var(--hb-purple);
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
}

.page-header .subtitle i {
    color: var(--hb-deep-pink);
}

.page-header hr {
    border: none;
    height: 3px;
    background: linear-gradient(
        90deg,
        transparent,
        var(--hb-primary),
        var(--hb-purple),
        var(--hb-deep-pink),
        transparent
    );
    width: min(200px, 60%);
    margin: 15px auto;
}

.button-group {
    display: flex;
    justify-content: center;
    gap: clamp(8px, 2vw, 12px);
    margin-bottom: clamp(20px, 4vw, 30px);
    flex-wrap: wrap;
    padding: 0 10px;
}

.small-btn {
    background: var(--bg-white);
    border: 2px solid var(--border-light);
    border-radius: 50px;
    padding: clamp(8px, 2vw, 10px) clamp(15px, 3vw, 25px);
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: clamp(13px, 2.8vw, 15px);
    font-weight: 600;
    color: var(--text-light);
    box-shadow: var(--shadow-sm);
    flex: 0 1 auto;
    min-width: 80px;
}

.small-btn i {
    font-size: clamp(14px, 3vw, 16px);
    color: var(--hb-primary);
}

.small-btn:hover {
    border-color: var(--hb-deep-pink);
    color: var(--hb-deep-pink);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.small-btn:hover i {
    color: var(--hb-deep-pink);
}

.small-btn.active {
    background: linear-gradient(135deg, var(--hb-primary), var(--hb-purple));
    border-color: transparent;
    color: var(--bg-white);
}

.small-btn.active i {
    color: var(--bg-white);
}

.category-badge {
    display: inline-block;
    background: linear-gradient(
        135deg,
        var(--hb-primary-light),
        var(--hb-pink-light)
    );
    color: var(--hb-primary);
    padding: clamp(6px, 1.5vw, 8px) clamp(15px, 3vw, 25px);
    border-radius: 50px;
    font-size: clamp(14px, 3vw, 18px);
    font-weight: 700;
    margin: 15px 0;
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(27, 77, 62, 0.1);
}

.category-badge i {
    margin-right: 8px;
    color: var(--hb-deep-pink);
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr); /* ডেস্কটপে ৩টি */
    gap: 20px;
    margin-top: 20px;
}

@media (max-width: 992px) {
    .courses-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
}

@media (max-width: 576px) {
    .courses-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
}

@media (max-width: 400px) {
    .courses-grid {
        grid-template-columns: 1fr;
        gap: 15px;
        max-width: 300px;
        margin: 0 auto;
    }
}

.course-card {
    background: var(--bg-white);
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    height: 100%;
    position: relative;
}

.course-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(
        90deg,
        var(--hb-primary),
        var(--hb-purple),
        var(--hb-deep-pink)
    );
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.course-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.course-card:hover::before {
    transform: scaleX(1);
}

.course-image {
    height: 160px;
    background: linear-gradient(135deg, var(--hb-primary), var(--hb-purple));
    position: relative;
    overflow: hidden;
}

.course-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.course-card:hover .course-image img {
    transform: scale(1.05);
}

.course-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    background: linear-gradient(135deg, var(--hb-deep-pink), var(--hb-purple));
    color: white;
    padding: 4px 12px;
    border-radius: 30px;
    font-size: 11px;
    font-weight: 700;
    box-shadow: 0 2px 5px rgba(255, 20, 147, 0.3);
    z-index: 2;
}

.course-content {
    padding: 15px 12px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.course-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--hb-primary);
    margin-bottom: 8px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    min-height: 42px;
}

.course-meta {
    display: flex;
    gap: 6px;
    margin-bottom: 8px;
    font-size: 11px;
    color: var(--text-muted);
    flex-wrap: wrap;
}

.course-meta span {
    background: var(--bg-light);
    padding: 3px 8px;
    border-radius: 30px;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.course-meta i {
    color: var(--hb-deep-pink);
    font-size: 10px;
}

.course-price {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 8px;
    flex-wrap: wrap;
}

.current-price {
    font-size: 18px;
    font-weight: 800;
    color: var(--hb-deep-pink);
}

.original-price {
    font-size: 12px;
    color: var(--text-muted);
    text-decoration: line-through;
}

.discount-badge {
    background: var(--hb-purple);
    color: white;
    padding: 2px 6px;
    border-radius: 30px;
    font-size: 10px;
    font-weight: 700;
}

.features-mini {
    display: flex;
    gap: 4px;
    margin-bottom: 10px;
    flex-wrap: wrap;
}

.feature-mini {
    background: var(--hb-primary-light);
    color: var(--hb-primary);
    padding: 2px 8px;
    border-radius: 30px;
    font-size: 9px;
    font-weight: 600;
}

.btn-details-small {
    background: transparent;
    border: 2px solid var(--hb-primary);
    color: var(--hb-primary);
    padding: 6px;
    border-radius: 30px;
    font-size: 12px;
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
    text-decoration: none;
    display: block;
    text-align: center;
    margin-top: auto;
}

.btn-details-small:hover {
    background: linear-gradient(135deg, var(--hb-primary), var(--hb-purple));
    color: white;
    border-color: transparent;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-details-small i {
    font-size: 11px;
}

.details-container {
    background: var(--bg-white);
    border-radius: 25px;
    padding: clamp(20px, 4vw, 30px);
    box-shadow: var(--shadow-lg);
    margin-top: 20px;
    position: relative;
    overflow: hidden;
}

.details-container::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(
        90deg,
        var(--hb-primary),
        var(--hb-purple),
        var(--hb-deep-pink)
    );
}

.details-image {
    width: 100%;
    height: clamp(200px, 40vw, 300px);
    border-radius: 20px;
    overflow: hidden;
    margin-bottom: 25px;
    border: 3px solid var(--hb-primary-light);
}

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

.details-title {
    font-size: clamp(22px, 5vw, 28px);
    font-weight: 800;
    background: linear-gradient(135deg, var(--hb-primary), var(--hb-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 10px;
    line-height: 1.3;
}

.details-instructor {
    color: var(--text-muted);
    margin-bottom: 20px;
    font-size: clamp(14px, 3vw, 16px);
    display: flex;
    align-items: center;
    gap: 8px;
}

.details-instructor i {
    color: var(--hb-deep-pink);
}

.details-price {
    background: linear-gradient(
        135deg,
        var(--hb-primary-light),
        var(--hb-pink-light)
    );
    padding: clamp(15px, 3vw, 20px);
    border-radius: 15px;
    margin: 20px 0;
    display: flex;
    align-items: center;
    gap: clamp(15px, 3vw, 20px);
    flex-wrap: wrap;
    border: 1px solid rgba(27, 77, 62, 0.1);
}

.price-current {
    font-size: clamp(24px, 5vw, 32px);
    font-weight: 800;
    color: var(--hb-deep-pink);
}

.price-old {
    font-size: clamp(14px, 3vw, 18px);
    text-decoration: line-through;
    color: var(--text-muted);
}

.discount-tag {
    background: var(--hb-purple);
    color: white;
    padding: 5px 15px;
    border-radius: 30px;
    font-size: clamp(12px, 2.5vw, 14px);
    font-weight: 700;
}

.details-desc {
    margin: 20px 0;
    line-height: 1.8;
    color: var(--text-light);
    font-size: clamp(14px, 3vw, 16px);
}

.details-info-box {
    background: linear-gradient(
        135deg,
        var(--bg-light),
        var(--hb-primary-light)
    );
    padding: clamp(15px, 3vw, 20px);
    border-radius: 15px;
    margin: 15px 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 200px), 1fr));
    gap: 15px;
}

.details-info-box div {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: clamp(13px, 2.8vw, 14px);
    color: var(--text-light);
}

.details-info-box i {
    color: var(--hb-deep-pink);
    width: 20px;
    font-size: 16px;
}

.features-list,
.curriculum-list {
    margin: 20px 0;
    padding-left: 20px;
}

.features-list li,
.curriculum-list li {
    margin-bottom: 12px;
    font-size: clamp(13px, 2.8vw, 15px);
    color: var(--text-light);
    display: flex;
    align-items: center;
    gap: 8px;
}

.features-list i,
.curriculum-list i {
    color: var(--hb-purple);
    font-size: 14px;
}

.btn-enroll {
    background: linear-gradient(135deg, var(--hb-primary), var(--hb-purple));
    color: white;
    border: none;
    padding: clamp(12px, 2.5vw, 15px);
    border-radius: 50px;
    font-size: clamp(16px, 3.5vw, 18px);
    font-weight: 700;
    width: 100%;
    cursor: pointer;
    transition: var(--transition);
    margin-top: 25px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.btn-enroll:hover {
    background: linear-gradient(135deg, var(--hb-purple), var(--hb-deep-pink));
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.btn-enroll:active {
    transform: translateY(-1px);
}

.btn-back {
    background: transparent;
    border: 2px solid var(--hb-primary);
    color: var(--hb-primary);
    padding: clamp(8px, 1.5vw, 10px) clamp(15px, 3vw, 20px);
    border-radius: 50px;
    font-size: clamp(13px, 2.8vw, 14px);
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 20px;
    transition: var(--transition);
}

.btn-back:hover {
    background: linear-gradient(135deg, var(--hb-primary), var(--hb-purple));
    color: white;
    border-color: transparent;
    transform: translateX(-5px);
    box-shadow: var(--shadow-md);
}

.btn-back i {
    font-size: clamp(12px, 2.5vw, 13px);
}

.login-alert {
    background: linear-gradient(135deg, #fff3cd, #fff9e6);
    border: 1px solid #ffeeba;
    color: #856404;
    padding: clamp(12px, 2.5vw, 15px) clamp(15px, 3vw, 20px);
    border-radius: 15px;
    margin-bottom: 20px;
    display: flex;
    align-items: flex-start;
    gap: 15px;
    font-size: clamp(13px, 2.8vw, 14px);
}

.login-alert i {
    font-size: clamp(20px, 4vw, 24px);
    color: var(--hb-purple);
    flex-shrink: 0;
}

.login-alert a {
    color: var(--hb-deep-pink);
    font-weight: 700;
    text-decoration: none;
}

.login-alert a:hover {
    text-decoration: underline;
}

.no-courses-message {
    text-align: center;
    padding: 50px 20px;
    background: var(--bg-white);
    border-radius: 20px;
    box-shadow: var(--shadow-sm);
    width: 100%;
    grid-column: span 3;
}

@media (max-width: 992px) {
    .no-courses-message {
        grid-column: span 2;
    }
}

@media (max-width: 576px) {
    .no-courses-message {
        grid-column: span 2;
    }
}

@media (max-width: 400px) {
    .no-courses-message {
        grid-column: span 1;
    }
}

.no-courses-message i {
    font-size: 48px;
    color: var(--hb-primary);
    margin-bottom: 15px;
}

.no-courses-message h4 {
    font-size: 20px;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.no-courses-message p {
    color: var(--text-muted);
    margin-bottom: 20px;
}

@media (max-width: 768px) {
    body {
        padding-top: 70px;
    }

    .button-group {
        gap: 6px;
    }

    .small-btn {
        padding: 8px 15px;
        font-size: 13px;
        min-width: 70px;
    }
}

@media (max-width: 480px) {
    body {
        padding-top: 60px;
    }

    .button-group {
        flex-direction: row;
        overflow-x: auto;
        padding: 5px 0;
        justify-content: flex-start;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        flex-wrap: nowrap;
    }

    .button-group::-webkit-scrollbar {
        display: none;
    }

    .small-btn {
        flex: 0 0 auto;
        padding: 6px 12px;
        font-size: 12px;
        min-width: 60px;
    }

    .details-price {
        flex-direction: column;
        align-items: flex-start;
    }

    .login-alert {
        flex-direction: column;
        text-align: center;
    }

    .login-alert i {
        margin: 0 auto;
    }
}

@media (max-height: 600px) and (orientation: landscape) {
    .details-image {
        height: 150px;
    }
}

@media (hover: none) {
    .course-card:hover,
    .small-btn:hover,
    .btn-details-small:hover,
    .btn-enroll:hover,
    .btn-back:hover {
        transform: none;
    }
}

.fa-spinner {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}