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

body {
    font-family: 'Quicksand', 'Inter', sans-serif;
    background: #ECFDF5;
    height: 100vh;
    overflow: hidden;
}

.app-container {
    display: flex;
    height: 100vh;
}

/* ========== SIDEBAR ========== */
.sidebar {
    width: 240px;
    background: linear-gradient(180deg, #064E3B, #065F46);
    color: white;
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    height: 100vh;
    position: sticky;
    top: 0;
    border-radius: 0 24px 24px 0;
}

.sidebar-header {
    padding: 24px 20px;
    border-bottom: 2px solid rgba(255,255,255,0.1);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.logo-img {
    width: 40px;
    height: 40px;
    border-radius: 12px;
}

.logo span {
    font-size: 22px;
    font-weight: 700;
    color: #6EE7B7;
}

.logo small {
    display: block;
    font-size: 11px;
    opacity: 0.7;
    width: 100%;
    color: #A7F3D0;
    margin-left: 52px;
}

.sidebar-nav {
    flex: 1;
    padding: 20px 12px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 18px;
    color: rgba(255,255,255,0.6);
    text-decoration: none;
    border-radius: 16px;
    transition: all 0.3s;
    cursor: pointer;
    font-size: 15px;
    font-weight: 500;
}

.nav-item:hover {
    background: rgba(255,255,255,0.1);
    color: white;
    transform: translateX(4px);
}

.nav-item.active {
    background: rgba(110, 231, 183, 0.2);
    color: #6EE7B7;
    box-shadow: 0 0 20px rgba(110, 231, 183, 0.1);
}

.nav-item i {
    font-size: 20px;
    width: 28px;
}

.sidebar-footer {
    padding: 16px 16px 24px;
    border-top: 2px solid rgba(255,255,255,0.08);
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 12px;
    border-radius: 16px;
    background: rgba(255,255,255,0.05);
    margin-bottom: 12px;
}

.avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 2px solid #6EE7B7;
}

.user-name span {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: white;
}

.user-name small {
    font-size: 11px;
    color: #A7F3D0;
}

/* ========== BACK TO MENU BUTTON ========== */
.btn-back-menu {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: #6EE7B7;
    padding: 10px 16px;
    border-radius: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 14px;
    font-family: 'Quicksand', sans-serif;
    width: 100%;
}

.btn-back-menu:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(110, 231, 183, 0.15);
}

.btn-back-menu i {
    font-size: 16px;
}

/* ========== MAIN CONTENT ========== */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background: #ECFDF5;
    position: relative;
}

/* ========== TOPBAR ========== */
.topbar {
    background: white;
    padding: 16px 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
    flex-shrink: 0;
    border-radius: 0 0 24px 24px;
}

.topbar-left h1 {
    font-size: 24px;
    font-weight: 700;
    color: #064E3B;
}

.topbar-left .subtitle {
    font-size: 13px;
    color: #10B981;
    font-weight: 500;
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.search-box {
    display: flex;
    align-items: center;
    gap: 10px;
    background: #ECFDF5;
    padding: 10px 18px;
    border-radius: 40px;
    width: 260px;
    border: 2px solid #D1FAE5;
    transition: all 0.3s;
}

.search-box:focus-within {
    border-color: #10B981;
    box-shadow: 0 0 20px rgba(16,185,129,0.15);
}

.search-box i {
    color: #10B981;
    font-size: 16px;
}

.search-box input {
    border: none;
    background: none;
    font-size: 14px;
    width: 100%;
    font-family: 'Quicksand', sans-serif;
}

.search-box input:focus {
    outline: none;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 6px;
    background: #ECFDF5;
    padding: 8px 18px;
    border-radius: 40px;
}

.user-info .greeting {
    font-size: 13px;
    color: #6B7280;
}

.user-info .name {
    font-weight: 700;
    font-size: 14px;
    color: #064E3B;
}

/* ========== CONTENT AREA ========== */
.content-area {
    flex: 1;
    padding: 24px 32px;
    overflow-y: auto;
}

.page {
    display: none;
    animation: fadeInUp 0.4s ease;
}

.page.active {
    display: block;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ========== WELCOME BANNER ========== */
.welcome-banner {
    background: linear-gradient(135deg, #10B981, #059669);
    border-radius: 24px;
    padding: 28px 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 28px;
    color: white;
    box-shadow: 0 8px 30px rgba(16,185,129,0.3);
}

.banner-text h2 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 4px;
}

.banner-text p {
    font-size: 14px;
    opacity: 0.9;
}

.banner-emoji {
    font-size: 40px;
    display: flex;
    gap: 8px;
}

.banner-emoji span {
    animation: float 3s ease-in-out infinite;
}

.banner-emoji span:nth-child(2) { animation-delay: 0.5s; }
.banner-emoji span:nth-child(3) { animation-delay: 1s; }

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* ========== STATS ========== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    margin-bottom: 28px;
}

.stat-card {
    border-radius: 20px;
    padding: 18px 22px;
    display: flex;
    align-items: center;
    gap: 14px;
    color: white;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    transition: all 0.3s;
    cursor: default;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.stat-icon {
    width: 46px;
    height: 46px;
    background: rgba(255,255,255,0.25);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
}

.stat-info h3 {
    font-size: 24px;
    font-weight: 700;
}

.stat-info p {
    font-size: 12px;
    opacity: 0.9;
}

/* ========== SECTION TITLE ========== */
.section-title {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 28px 0 16px;
}

.section-title h3 {
    font-size: 18px;
    font-weight: 700;
    color: #064E3B;
}

.section-title .see-all {
    font-size: 13px;
    color: #10B981;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.section-title .see-all:hover {
    color: #059669;
    transform: translateX(4px);
}

/* ========== AKTIVITAS GRID ========== */
.aktivitas-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.aktivitas-card {
    background: white;
    border-radius: 20px;
    padding: 20px;
    display: flex;
    gap: 16px;
    align-items: flex-start;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    cursor: pointer;
    transition: all 0.3s;
    border: 2px solid transparent;
}

.aktivitas-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.1);
    border-color: #10B981;
}

.aktivitas-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    flex-shrink: 0;
}

.aktivitas-info {
    flex: 1;
}

.aktivitas-info h4 {
    font-size: 15px;
    font-weight: 700;
    color: #064E3B;
    margin-bottom: 2px;
}

.aktivitas-info p {
    font-size: 13px;
    color: #6B7280;
    margin-bottom: 4px;
}

.aktivitas-date {
    font-size: 12px;
    color: #9CA3AF;
}

.aktivitas-badge {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 700;
    flex-shrink: 0;
}

/* ========== PAGE HEADER ========== */
.page-header {
    margin-bottom: 24px;
}

.page-header h2 {
    font-size: 24px;
    font-weight: 700;
    color: #064E3B;
}

.page-header p {
    font-size: 14px;
    color: #6B7280;
}

/* ========== DETAIL HEADER ========== */
.detail-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.back-btn {
    background: none;
    border: none;
    color: #10B981;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: 12px;
    transition: all 0.3s;
    font-family: 'Quicksand', sans-serif;
    font-size: 14px;
}

.back-btn:hover {
    background: #D1FAE5;
}

.detail-header h2 {
    font-size: 24px;
    font-weight: 700;
    color: #064E3B;
}

.detail-badge {
    padding: 4px 16px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
}

/* ========== PERTEMUAN ========== */
.pertemuan-container {
    background: white;
    border-radius: 20px;
    padding: 24px;
    box-shadow: 0 2px 15px rgba(0,0,0,0.05);
    margin-bottom: 24px;
}

.pertemuan-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 12px;
}

.pertemuan-header h3 {
    font-size: 18px;
    font-weight: 700;
    color: #064E3B;
}

.pertemuan-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.pertemuan-item {
    background: #ECFDF5;
    border-radius: 16px;
    padding: 16px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s;
    border: 2px solid transparent;
    flex-wrap: wrap;
    gap: 12px;
}

.pertemuan-item:hover {
    border-color: #10B981;
    transform: translateX(4px);
}

.pertemuan-item-info {
    flex: 1;
    cursor: pointer;
}

.pertemuan-item-info h4 {
    font-size: 16px;
    font-weight: 700;
    color: #064E3B;
    margin-bottom: 2px;
}

.pertemuan-item-info p {
    font-size: 14px;
    color: #6B7280;
    margin-bottom: 2px;
}

.pertemuan-item-info .pertemuan-date {
    font-size: 12px;
    color: #9CA3AF;
}

.pertemuan-item-actions {
    display: flex;
    gap: 8px;
    align-items: center;
}

.pertemuan-item-actions button {
    padding: 6px 14px;
    border: none;
    border-radius: 10px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    font-family: 'Quicksand', sans-serif;
}

.btn-open {
    background: #10B981;
    color: white;
}

.btn-open:hover {
    background: #059669;
}

/* ========== DETAIL TABS ========== */
.detail-tabs {
    display: flex;
    gap: 6px;
    background: #F3F4F6;
    border-radius: 16px;
    padding: 6px;
    margin-bottom: 24px;
    overflow-x: auto;
    flex-wrap: nowrap;
}

.detail-tab {
    padding: 10px 20px;
    border: none;
    background: none;
    border-radius: 12px;
    font-size: 13px;
    font-weight: 600;
    color: #64748b;
    cursor: pointer;
    transition: all 0.3s;
    white-space: nowrap;
    font-family: 'Quicksand', sans-serif;
    display: flex;
    align-items: center;
    gap: 6px;
}

.detail-tab.active {
    background: #10B981;
    color: white;
    box-shadow: 0 4px 15px rgba(16,185,129,0.3);
}

.detail-tab:hover:not(.active) {
    background: #D1FAE5;
}

.detail-pane {
    display: none;
}

.detail-pane.active {
    display: block;
    animation: fadeInUp 0.3s ease;
}

/* ========== VIDEO ========== */
.video-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.video-item {
    background: #F9FAFB;
    border-radius: 16px;
    padding: 16px 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    flex-wrap: wrap;
}

.video-thumbnail {
    width: 90px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.video-thumbnail i {
    font-size: 32px;
    color: white;
}

.video-info {
    flex: 1;
}

.video-info h4 {
    font-size: 15px;
    font-weight: 700;
    color: #064E3B;
}

.video-info p {
    font-size: 13px;
    color: #6B7280;
}

.video-duration {
    font-size: 12px;
    color: #9CA3AF;
}

.btn-watch {
    padding: 8px 20px;
    background: #D1FAE5;
    color: #059669;
    border: none;
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all 0.3s;
    font-family: 'Quicksand', sans-serif;
}

.btn-watch:hover {
    background: #059669;
    color: white;
}

/* ========== MODUL ========== */
.modul-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.modul-item {
    background: #F9FAFB;
    border-radius: 16px;
    padding: 16px 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    flex-wrap: wrap;
}

.modul-item i {
    font-size: 32px;
    flex-shrink: 0;
}

.modul-info {
    flex: 1;
}

.modul-info h4 {
    font-size: 15px;
    font-weight: 700;
    color: #064E3B;
}

.modul-info p {
    font-size: 13px;
    color: #6B7280;
}

.btn-download {
    padding: 8px 20px;
    background: #D1FAE5;
    color: #059669;
    border: none;
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all 0.3s;
    font-family: 'Quicksand', sans-serif;
}

.btn-download:hover {
    background: #059669;
    color: white;
}

/* ========== QUIZ ========== */
.quiz-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.quiz-item {
    background: #F9FAFB;
    border-radius: 16px;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    flex-wrap: wrap;
}

.quiz-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    flex-shrink: 0;
    color: white;
}

.quiz-info {
    flex: 1;
}

.quiz-info h4 {
    font-size: 15px;
    font-weight: 700;
    color: #064E3B;
}

.quiz-info p {
    font-size: 13px;
    color: #6B7280;
}

.quiz-meta {
    font-size: 12px;
    color: #9CA3AF;
    display: block;
    margin-top: 2px;
}

.btn-quiz-start {
    padding: 8px 20px;
    background: #D1FAE5;
    color: #059669;
    border: none;
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all 0.3s;
    font-family: 'Quicksand', sans-serif;
}

.btn-quiz-start:hover {
    background: #059669;
    color: white;
}

/* ========== DISKUSI ========== */
.discussion-container {
    background: #F9FAFB;
    border-radius: 16px;
    padding: 20px;
}

.discussion-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    flex-wrap: wrap;
    gap: 12px;
}

.discussion-header h3 {
    font-size: 16px;
    font-weight: 700;
    color: #064E3B;
}

.discussion-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.discussion-item {
    display: flex;
    gap: 16px;
    padding: 16px;
    border-radius: 12px;
    background: white;
    align-items: flex-start;
    flex-wrap: wrap;
}

.discussion-avatar {
    font-size: 36px;
    color: #9CA3AF;
}

.discussion-content {
    flex: 1;
}

.discussion-content h4 {
    font-size: 15px;
    font-weight: 700;
    color: #064E3B;
    margin-bottom: 4px;
}

.discussion-content p {
    font-size: 14px;
    color: #475569;
    margin-bottom: 4px;
}

.discussion-meta {
    font-size: 12px;
    color: #9CA3AF;
}

.discussion-reply {
    font-size: 13px;
    font-weight: 600;
    color: #10B981;
    cursor: pointer;
}

.discussion-reply:hover {
    text-decoration: underline;
}

.discussion-replies {
    margin-top: 8px;
    padding-left: 24px;
    border-left: 3px solid #D1FAE5;
}

.discussion-reply-item {
    padding: 8px 0;
    border-bottom: 1px solid #F3F4F6;
}

.discussion-reply-item:last-child {
    border-bottom: none;
}

.reply-author {
    font-weight: 600;
    font-size: 13px;
    color: #064E3B;
}

.reply-text {
    font-size: 14px;
    color: #475569;
    margin: 2px 0;
}

.reply-time {
    font-size: 11px;
    color: #9CA3AF;
}

/* ========== BUTTONS ========== */
.btn-primary {
    background: #10B981;
    color: white;
    border: none;
    padding: 8px 20px;
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s;
    font-family: 'Quicksand', sans-serif;
    font-size: 14px;
}

.btn-primary:hover {
    opacity: 0.9;
    transform: scale(0.97);
}

.btn-secondary {
    background: #E5E7EB;
    color: #374151;
    border: none;
    padding: 8px 20px;
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    font-family: 'Quicksand', sans-serif;
    font-size: 14px;
}

.btn-secondary:hover {
    background: #D1D5DB;
}

/* ========== MODAL ========== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 1000;
    justify-content: center;
    align-items: center;
    animation: fadeIn 0.3s ease;
}

.modal.show {
    display: flex;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background: white;
    border-radius: 24px;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from { transform: translateY(30px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 2px solid #ECFDF5;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 18px;
    font-weight: 700;
    color: #064E3B;
}

.modal-close {
    font-size: 28px;
    cursor: pointer;
    color: #9CA3AF;
    transition: all 0.3s;
}

.modal-close:hover {
    color: #EF4444;
    transform: rotate(90deg);
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 2px solid #ECFDF5;
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

/* ========== FORM ========== */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: #064E3B;
    margin-bottom: 4px;
}

.form-control {
    width: 100%;
    padding: 10px 14px;
    border: 2px solid #E5E7EB;
    border-radius: 12px;
    font-size: 14px;
    font-family: 'Quicksand', sans-serif;
    transition: all 0.3s;
}

.form-control:focus {
    outline: none;
    border-color: #10B981;
    box-shadow: 0 0 20px rgba(16,185,129,0.1);
}

textarea.form-control {
    resize: vertical;
}

/* ========== TOAST ========== */
.toast {
    position: fixed;
    bottom: 30px;
    right: 30px;
    padding: 16px 28px;
    border-radius: 16px;
    color: white;
    font-weight: 600;
    z-index: 9999;
    animation: slideInToast 0.4s ease;
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
    font-size: 15px;
    font-family: 'Quicksand', sans-serif;
    max-width: 400px;
}

.toast.success { background: linear-gradient(135deg, #10B981, #059669); }
.toast.error { background: linear-gradient(135deg, #EF4444, #DC2626); }
.toast.info { background: linear-gradient(135deg, #3B82F6, #2563EB); }

@keyframes slideInToast {
    from { transform: translateX(100%) scale(0.8); opacity: 0; }
    to { transform: translateX(0) scale(1); opacity: 1; }
}

@keyframes slideOutToast {
    from { transform: translateX(0) scale(1); opacity: 1; }
    to { transform: translateX(100%) scale(0.8); opacity: 0; }
}

/* ========== FLOATING DECORATION ========== */
.floating-deco {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.deco-emoji {
    position: absolute;
    font-size: 28px;
    opacity: 0.12;
    animation: float 6s ease-in-out infinite;
}

/* ========== SCROLLBAR ========== */
.content-area::-webkit-scrollbar {
    width: 6px;
}

.content-area::-webkit-scrollbar-track {
    background: transparent;
}

.content-area::-webkit-scrollbar-thumb {
    background: #A7F3D0;
    border-radius: 3px;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
    .sidebar {
        width: 64px;
        border-radius: 0 16px 16px 0;
    }
    .logo span, .logo small, .nav-item span, .user-profile .user-name {
        display: none;
    }
    .logo-img { width: 32px; height: 32px; }
    .sidebar-header { padding: 16px 12px; }
    .nav-item { justify-content: center; padding: 12px; }
    .nav-item i { margin-right: 0; }
    .sidebar-footer { padding: 12px; }
    .user-profile { justify-content: center; padding: 8px; margin-bottom: 8px; }
    .avatar { width: 36px; height: 36px; }
    
    .btn-back-menu {
        padding: 6px 12px;
        font-size: 11px;
        border-radius: 10px;
    }
    .btn-back-menu i {
        font-size: 12px;
    }
    
    .topbar {
        padding: 12px 16px;
        flex-direction: column;
        gap: 12px;
        border-radius: 0 0 16px 16px;
    }
    .topbar-right { width: 100%; flex-wrap: wrap; }
    .search-box { width: 100%; flex: 1; }
    .content-area { padding: 16px; }
    
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .stats-grid .stat-card:last-child { grid-column: span 2; }
    .aktivitas-grid { grid-template-columns: 1fr; }
    .floating-deco { display: none; }
    
    .detail-tabs { flex-wrap: nowrap; overflow-x: auto; }
    .detail-tab { padding: 8px 14px; font-size: 12px; }
    .detail-tab i { display: none; }
    
    .pertemuan-item { flex-direction: column; align-items: flex-start; }
    .pertemuan-item-actions { width: 100%; justify-content: flex-start; }
    
    .video-item, .modul-item, .quiz-item { flex-direction: column; text-align: center; }
    .video-thumbnail { width: 100%; height: 120px; }
    .discussion-item { flex-direction: column; }
    .modal-content { width: 95%; }
}

@media (max-width: 480px) {
    .stats-grid { grid-template-columns: 1fr; }
    .stats-grid .stat-card:last-child { grid-column: span 1; }
    .welcome-banner { flex-direction: column; text-align: center; padding: 20px; }
    .banner-emoji { margin-top: 12px; }
    
    .btn-back-menu {
        padding: 4px 10px;
        font-size: 10px;
        border-radius: 8px;
    }
    .btn-back-menu i {
        font-size: 10px;
    }
}