/* ==========================================================================
   TILKY LEARNING PORTAL - PREMIUM CSS DESIGN SYSTEM
   Theme: Warm Fox Orange & Soft Cream
   Author: Antigravity
   ========================================================================== */

/* Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

/* CSS Custom Properties / Tokens */
:root {
    /* Colors */
    --primary: #E8620A;
    --primary-hover: #C4510A;
    --primary-light: #FFF3EB;
    --primary-light-hover: #FFE6D6;
    --secondary: #F5A623;
    --secondary-light: #FFF8ED;
    --dark-chocolate: #1A1200;
    --text-dark: #1A1200;
    --text-muted: #6B5A3E;
    --text-light: #A08060;
    --bg-page: #FFF9F6;
    --bg-card: #FFFFFF;
    
    /* System States */
    --success: #10B981;
    --success-light: #ECFDF5;
    --success-border: #A7F3D0;
    --info: #3B82F6;
    --info-light: #EFF6FF;
    --warning: #F59E0B;
    --warning-light: #FEF3C7;
    --danger: #EF4444;
    --danger-light: #FEF2F2;

    /* Layout & Styling */
    --sidebar-width: 280px;
    --sidebar-collapsed-width: 80px;
    --topbar-height: 80px;
    
    --radius-lg: 20px;
    --radius-md: 14px;
    --radius-sm: 8px;
    --radius-full: 9999px;
    
    --shadow-sm: 0 4px 12px rgba(26, 18, 0, 0.03);
    --shadow-md: 0 10px 30px rgba(26, 18, 0, 0.06);
    --shadow-lg: 0 20px 48px rgba(26, 18, 0, 0.1);
    --shadow-glow: 0 8px 24px rgba(232, 98, 10, 0.25);
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s ease;
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

html, body {
    width: 100%;
    height: 100%;
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-page);
    color: var(--text-dark);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Outfit', sans-serif;
    color: var(--text-dark);
    font-weight: 700;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}

button {
    font-family: inherit;
    border: none;
    background: none;
    cursor: pointer;
    outline: none;
    transition: var(--transition);
}

/* Core Layout */
.app-container {
    display: flex;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    position: relative;
}

/* Glassmorphism background decor */
.bg-decor {
    position: absolute;
    width: 300px;
    height: 300px;
    border-radius: var(--radius-full);
    background: radial-gradient(circle, rgba(232, 98, 10, 0.15) 0%, rgba(255, 243, 235, 0) 70%);
    filter: blur(40px);
    z-index: 0;
    pointer-events: none;
}
.bg-decor-1 { top: -50px; right: -50px; }
.bg-decor-2 { bottom: -100px; left: -100px; }

/* Sidebar Styling */
.sidebar {
    width: var(--sidebar-width);
    height: 100%;
    background-color: var(--bg-card);
    border-right: 1px solid rgba(240, 222, 202, 0.5);
    display: flex;
    flex-direction: column;
    padding: 24px;
    z-index: 10;
    transition: var(--transition);
    position: relative;
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 8px 32px 8px;
}

.logo-icon {
    width: 44px;
    height: 44px;
    background-color: var(--primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-glow);
    color: #fff;
    font-size: 24px;
    position: relative;
    overflow: hidden;
}

.logo-icon::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255,255,255,0.3), transparent);
    transform: rotate(45deg);
    animation: shine 3s infinite;
}

@keyframes shine {
    0% { transform: translate(-100%, -100%) rotate(45deg); }
    100% { transform: translate(100%, 100%) rotate(45deg); }
}

.logo-text {
    font-family: 'Outfit', sans-serif;
    font-size: 24px;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: -0.5px;
    display: flex;
    align-items: baseline;
    gap: 4px;
}

.logo-badge {
    font-size: 10px;
    background-color: var(--secondary-light);
    color: var(--secondary);
    border: 1px solid rgba(245, 166, 35, 0.3);
    padding: 2px 6px;
    border-radius: var(--radius-full);
    font-weight: 600;
    text-transform: uppercase;
}

.sidebar-menu {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex-grow: 1;
}

.menu-item a {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 14px 18px;
    color: var(--text-muted);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 15px;
    border: 1px solid transparent;
}

.menu-item a svg {
    width: 22px;
    height: 22px;
    stroke: var(--text-muted);
    stroke-width: 2;
    fill: none;
    transition: var(--transition);
}

.menu-item:hover a {
    color: var(--primary);
    background-color: var(--primary-light);
}

.menu-item:hover a svg {
    stroke: var(--primary);
    transform: translateX(3px);
}

.menu-item.active a {
    color: #fff;
    background: linear-gradient(135deg, var(--primary) 0%, #FF8533 100%);
    box-shadow: var(--shadow-glow);
    border: 1px solid rgba(232, 98, 10, 0.1);
}

.menu-item.active a svg {
    stroke: #fff;
}

/* Sidebar Footer (User Profile Card) */
.sidebar-profile {
    margin-top: auto;
    padding: 16px;
    background-color: var(--secondary-light);
    border: 1px solid rgba(240, 222, 202, 0.4);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    gap: 12px;
    position: relative;
    cursor: pointer;
    transition: var(--transition);
}

.sidebar-profile:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
    border-color: rgba(232, 98, 10, 0.2);
}

.profile-avatar {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    border: 2px solid var(--primary);
    background-color: var(--primary-light);
    object-fit: cover;
    box-shadow: var(--shadow-sm);
}

.profile-info {
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.profile-name {
    font-size: 14px;
    font-weight: 700;
    color: var(--text-dark);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.profile-role {
    font-size: 12px;
    color: var(--text-light);
    font-weight: 500;
}

.logout-btn {
    position: absolute;
    right: 12px;
    color: var(--text-light);
    opacity: 0.7;
    transition: var(--transition);
}

.logout-btn:hover {
    color: var(--danger);
    opacity: 1;
    transform: scale(1.1);
}

/* Main Content Area */
.main-wrapper {
    flex-grow: 1;
    height: 100%;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    z-index: 1;
}

/* Topbar Styling */
.topbar {
    height: var(--topbar-height);
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(240, 222, 202, 0.5);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 40px;
    z-index: 9;
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.page-title {
    font-size: 26px;
    font-weight: 800;
    color: var(--text-dark);
}

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

/* Language Selector */
.lang-selector {
    display: flex;
    background-color: var(--primary-light);
    border: 1px solid rgba(232, 98, 10, 0.15);
    padding: 4px;
    border-radius: var(--radius-full);
    position: relative;
}

.lang-btn {
    padding: 6px 14px;
    font-size: 13px;
    font-weight: 700;
    border-radius: var(--radius-full);
    color: var(--text-muted);
}

.lang-btn.active {
    background-color: var(--primary);
    color: #fff;
    box-shadow: 0 4px 10px rgba(232, 98, 10, 0.2);
}

/* Notification Button */
.notification-btn {
    width: 46px;
    height: 46px;
    background-color: #fff;
    border: 1px solid rgba(240, 222, 202, 0.6);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.notification-btn:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.notification-btn svg {
    width: 22px;
    height: 22px;
    stroke: var(--text-dark);
    stroke-width: 2;
    fill: none;
}

.notification-dot {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 10px;
    height: 10px;
    background-color: var(--primary);
    border: 2px solid #fff;
    border-radius: var(--radius-full);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(232, 98, 10, 0.7); }
    70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(232, 98, 10, 0); }
    100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(232, 98, 10, 0); }
}

/* Content Container */
.content-body {
    flex-grow: 1;
    overflow-y: auto;
    padding: 40px;
    position: relative;
}

/* Tab Transitions */
.tab-content {
    display: none;
    animation: fadeScale 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.tab-content.active {
    display: block;
}

@keyframes fadeScale {
    from {
        opacity: 0;
        transform: scale(0.98) translateY(10px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

/* --- TAB 1: DASHBOARD PAGE --- */

/* Greeting Header Card */
.welcome-card {
    background: linear-gradient(135deg, #1A1200 0%, #302000 100%);
    border-radius: var(--radius-lg);
    padding: 32px 40px;
    color: #fff;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    margin-bottom: 32px;
}

.welcome-card::after {
    content: '';
    position: absolute;
    right: 0;
    top: 0;
    width: 350px;
    height: 100%;
    background: radial-gradient(circle, rgba(232, 98, 10, 0.25) 0%, rgba(26, 18, 0, 0) 70%);
    pointer-events: none;
}

.welcome-text h2 {
    color: #fff;
    font-size: 32px;
    margin-bottom: 8px;
}

.welcome-text p {
    color: #FFF3EB;
    font-size: 16px;
    font-weight: 500;
    opacity: 0.9;
}

.welcome-decor-fox {
    font-size: 80px;
    filter: drop-shadow(0 8px 16px rgba(0,0,0,0.3));
    animation: bounce 4s ease-in-out infinite;
    z-index: 1;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-10px) rotate(5deg); }
}

/* Dashboard Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 32px;
}

.stat-card {
    background-color: var(--bg-card);
    border: 1px solid rgba(240, 222, 202, 0.5);
    border-radius: var(--radius-lg);
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 20px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: rgba(232, 98, 10, 0.2);
}

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.stat-icon svg {
    width: 28px;
    height: 28px;
    stroke-width: 2;
    fill: none;
}

.stat-details {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-size: 24px;
    font-weight: 800;
    color: var(--text-dark);
    font-family: 'Outfit', sans-serif;
}

.stat-label {
    font-size: 13px;
    color: var(--text-muted);
    font-weight: 600;
    margin-top: 2px;
}

/* Color thematic styles for stats */
.stat-1 .stat-icon { background-color: var(--primary-light); }
.stat-1 .stat-icon svg { stroke: var(--primary); }
.stat-2 .stat-icon { background-color: var(--warning-light); }
.stat-2 .stat-icon svg { stroke: var(--warning); }
.stat-3 .stat-icon { background-color: var(--success-light); }
.stat-3 .stat-icon svg { stroke: var(--success); }
.stat-4 .stat-icon { background-color: var(--info-light); }
.stat-4 .stat-icon svg { stroke: var(--info); }

/* Main Dashboard Section Split */
.dashboard-sections {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 32px;
}

.section-panel {
    background-color: var(--bg-card);
    border: 1px solid rgba(240, 222, 202, 0.5);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-sm);
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.panel-title {
    font-size: 20px;
    font-weight: 800;
    display: flex;
    align-items: center;
    gap: 10px;
}

.panel-title svg {
    width: 24px;
    height: 24px;
    stroke: var(--primary);
    stroke-width: 2.5;
    fill: none;
}

/* Progress Chart Visual Mock */
.chart-container {
    height: 240px;
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    padding: 20px 10px 0 10px;
    border-bottom: 2px solid var(--border-color);
    position: relative;
    margin-bottom: 12px;
}

.chart-bar-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: calc(100% / 7);
    height: 100%;
    justify-content: flex-end;
    gap: 12px;
}

.chart-bar-fill {
    width: 32px;
    background: linear-gradient(180deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
    transition: height 1s ease-in-out;
    position: relative;
    cursor: pointer;
}

.chart-bar-fill::after {
    content: attr(data-val) ' dk';
    position: absolute;
    top: -28px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--text-dark);
    color: #fff;
    font-size: 11px;
    padding: 2px 6px;
    border-radius: 4px;
    font-weight: 600;
    opacity: 0;
    transition: var(--transition-fast);
    pointer-events: none;
    white-space: nowrap;
}

.chart-bar-fill:hover::after {
    opacity: 1;
    transform: translateX(-50%) translateY(-2px);
}

.chart-label {
    font-size: 12px;
    font-weight: 700;
    color: var(--text-muted);
}

/* Sidebar Classroom / Upcomings Panel */
.classroom-panel {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.countdown-box {
    background: linear-gradient(135deg, var(--secondary) 0%, #E8620A 100%);
    border-radius: var(--radius-lg);
    padding: 24px;
    color: #fff;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.countdown-box::before {
    content: '';
    position: absolute;
    top: -30%;
    right: -20%;
    width: 120px;
    height: 120px;
    background-color: rgba(255,255,255,0.1);
    border-radius: var(--radius-full);
    pointer-events: none;
}

.countdown-title {
    font-size: 14px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    opacity: 0.9;
    margin-bottom: 12px;
}

.countdown-time {
    font-family: 'Outfit', sans-serif;
    font-size: 28px;
    font-weight: 800;
    margin-bottom: 16px;
    display: flex;
    gap: 6px;
}

.countdown-btn {
    width: 100%;
    background-color: #fff;
    color: var(--primary);
    padding: 12px;
    border-radius: var(--radius-md);
    font-weight: 700;
    font-size: 14px;
    text-align: center;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.countdown-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0,0,0,0.15);
    background-color: var(--primary-light);
}

.teacher-notes-summary {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.summary-note-card {
    background-color: var(--secondary-light);
    border-left: 4px solid var(--primary);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    padding: 16px;
}

.note-author {
    font-weight: 700;
    font-size: 14px;
    margin-bottom: 4px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.note-text {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.5;
}

/* --- TAB 2: MY COURSES PAGE --- */

.courses-filter {
    display: flex;
    gap: 16px;
    margin-bottom: 32px;
}

.filter-btn {
    padding: 12px 24px;
    font-size: 15px;
    font-weight: 700;
    border-radius: var(--radius-md);
    background-color: #fff;
    border: 1px solid rgba(240, 222, 202, 0.6);
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 10px;
}

.filter-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.filter-btn.active {
    background-color: var(--primary);
    color: #fff;
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
}

.filter-btn .lang-flag {
    font-size: 18px;
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.course-card {
    background-color: var(--bg-card);
    border: 1px solid rgba(240, 222, 202, 0.5);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    transition: var(--transition);
}

.course-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(232, 98, 10, 0.2);
}

.course-cover {
    height: 160px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    padding: 24px;
    color: #fff;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
    overflow: hidden;
}

.course-cover::before {
    content: '🦊';
    position: absolute;
    right: -10px;
    bottom: -10px;
    font-size: 100px;
    opacity: 0.15;
}

.course-tag {
    align-self: flex-start;
    background-color: rgba(255,255,255,0.2);
    backdrop-filter: blur(8px);
    padding: 4px 10px;
    border-radius: var(--radius-full);
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.course-lang {
    position: absolute;
    top: 24px;
    right: 24px;
    font-size: 24px;
}

.course-title-box h3 {
    color: #fff;
    font-size: 20px;
    margin-bottom: 4px;
}

.course-info-row {
    font-size: 13px;
    opacity: 0.9;
    font-weight: 500;
}

.course-body {
    padding: 24px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.course-description {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.5;
    margin-bottom: 20px;
}

.course-progress-container {
    margin-top: auto;
    margin-bottom: 24px;
}

.progress-label-row {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    font-weight: 700;
    margin-bottom: 8px;
}

.progress-bar-bg {
    width: 100%;
    height: 8px;
    background-color: var(--primary-light);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background-color: var(--primary);
    border-radius: var(--radius-full);
    transition: width 0.5s ease-out;
}

.course-footer-btn {
    width: 100%;
    background-color: var(--primary-light);
    color: var(--primary);
    padding: 14px;
    border-radius: var(--radius-md);
    font-weight: 700;
    text-align: center;
    font-size: 14px;
}

.course-footer-btn:hover {
    background-color: var(--primary);
    color: #fff;
    box-shadow: var(--shadow-glow);
}


/* --- TAB 3: INTERACTIVE CLASSROOM PAGE --- */

.classroom-layout {
    display: grid;
    grid-template-columns: 2.2fr 1fr;
    gap: 32px;
}

.video-container {
    background-color: #000;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    aspect-ratio: 16 / 9;
    position: relative;
}

/* Dynamic custom video player UI styles */
.mock-player {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: linear-gradient(135deg, #1e1e24 0%, #111 100%);
    color: #fff;
    position: relative;
    cursor: pointer;
}

.player-poster {
    position: absolute;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.6;
    transition: var(--transition);
}

.player-big-play {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-full);
    background-color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-glow);
    z-index: 2;
    transition: var(--transition);
}

.player-big-play svg {
    width: 32px;
    height: 32px;
    fill: #fff;
}

.mock-player:hover .player-big-play {
    transform: scale(1.1);
}

.player-controls {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: linear-gradient(0deg, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0) 100%);
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    opacity: 0;
    transform: translateY(10px);
    transition: var(--transition);
    z-index: 3;
}

.mock-player:hover .player-controls {
    opacity: 1;
    transform: translateY(0);
}

.player-progress-bar {
    width: 100%;
    height: 6px;
    background-color: rgba(255,255,255,0.3);
    border-radius: var(--radius-full);
    cursor: pointer;
    overflow: hidden;
}

.player-progress-fill {
    width: 45%;
    height: 100%;
    background-color: var(--primary);
    border-radius: var(--radius-full);
}

.player-controls-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.player-controls-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.player-btn svg {
    width: 20px;
    height: 20px;
    fill: #fff;
}

.player-time {
    font-size: 13px;
    font-weight: 500;
}

.classroom-details {
    margin-top: 24px;
}

.classroom-tabs {
    display: flex;
    border-bottom: 2px solid var(--border-color);
    margin-bottom: 20px;
}

.classroom-tab-btn {
    padding: 12px 24px;
    font-weight: 700;
    font-size: 15px;
    color: var(--text-muted);
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
}

.classroom-tab-btn.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.classroom-pane {
    display: none;
    line-height: 1.6;
}

.classroom-pane.active {
    display: block;
}

/* Sidebar Vocabulary Match & Active List */
.classroom-sidebar {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.vocab-list {
    background-color: var(--bg-card);
    border: 1px solid rgba(240, 222, 202, 0.5);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-sm);
}

.vocab-items {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.vocab-card {
    background-color: var(--secondary-light);
    border: 1px solid rgba(245, 166, 35, 0.15);
    padding: 12px 16px;
    border-radius: var(--radius-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: var(--transition-fast);
}

.vocab-card:hover {
    transform: translateX(4px);
    border-color: var(--primary);
    background-color: var(--primary-light);
}

.vocab-word {
    font-weight: 700;
    font-size: 14px;
}

.vocab-translation {
    font-size: 13px;
    color: var(--text-muted);
}

.vocab-audio-btn {
    color: var(--primary);
}

.vocab-audio-btn:hover {
    transform: scale(1.1);
}

/* Word quiz matching panel */
.quiz-box {
    background-color: var(--bg-card);
    border: 1px solid rgba(240, 222, 202, 0.5);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-sm);
}

.quiz-question {
    font-weight: 700;
    font-size: 15px;
    margin-bottom: 16px;
    color: var(--text-dark);
}

.quiz-options {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.quiz-option {
    border: 1px solid rgba(240, 222, 202, 0.6);
    border-radius: var(--radius-md);
    padding: 12px 16px;
    text-align: left;
    font-size: 13px;
    font-weight: 600;
    transition: var(--transition-fast);
}

.quiz-option:hover {
    background-color: var(--primary-light);
    border-color: var(--primary);
    color: var(--primary);
}

.quiz-option.correct {
    background-color: var(--success-light);
    border-color: var(--success);
    color: var(--success);
}

.quiz-option.wrong {
    background-color: var(--danger-light);
    border-color: var(--danger);
    color: var(--danger);
}


/* --- TAB 4: PROGRESS & ACHIEVEMENTS --- */

.progress-stats-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-bottom: 32px;
}

.progress-box {
    background-color: var(--bg-card);
    border: 1px solid rgba(240, 222, 202, 0.5);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-sm);
    text-align: center;
}

.radial-progress-wrapper {
    position: relative;
    width: 140px;
    height: 140px;
    margin: 0 auto 20px auto;
}

.radial-progress-svg {
    transform: rotate(-90deg);
}

.radial-circle-bg {
    fill: none;
    stroke: var(--primary-light);
    stroke-width: 12;
}

.radial-circle-fill {
    fill: none;
    stroke: var(--primary);
    stroke-width: 12;
    stroke-linecap: round;
    stroke-dasharray: 440;
    stroke-dashoffset: 110; /* Dynamic mock */
    transition: stroke-dashoffset 1s ease-in-out;
}

.radial-progress-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 26px;
    font-weight: 800;
    font-family: 'Outfit', sans-serif;
    color: var(--text-dark);
}

.radial-label {
    font-weight: 700;
    font-size: 16px;
    margin-bottom: 4px;
}

.radial-desc {
    font-size: 13px;
    color: var(--text-muted);
}

.badges-panel {
    background-color: var(--bg-card);
    border: 1px solid rgba(240, 222, 202, 0.5);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-sm);
}

.badges-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 24px;
}

.badge-card {
    background-color: var(--bg-page);
    border: 1px solid rgba(240, 222, 202, 0.4);
    border-radius: var(--radius-lg);
    padding: 24px 16px;
    text-align: center;
    transition: var(--transition);
    position: relative;
}

.badge-card:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: var(--shadow-md);
    border-color: var(--primary);
}

.badge-icon-box {
    width: 72px;
    height: 72px;
    border-radius: var(--radius-full);
    background-color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px auto;
    box-shadow: var(--shadow-sm);
    font-size: 32px;
    border: 2px solid transparent;
    transition: var(--transition);
}

.badge-card.unlocked .badge-icon-box {
    border-color: var(--secondary);
    background: radial-gradient(circle, #FFF8ED 0%, #FFF3EB 100%);
    animation: pulseGlow 3s infinite;
}

@keyframes pulseGlow {
    0%, 100% { box-shadow: 0 0 0 0 rgba(245, 166, 35, 0.3); }
    50% { box-shadow: 0 0 0 8px rgba(245, 166, 35, 0); }
}

.badge-card.locked {
    opacity: 0.6;
}

.badge-card.locked .badge-icon-box {
    background-color: #E2E8F0;
    font-size: 24px;
}

.badge-title {
    font-weight: 700;
    font-size: 14px;
    margin-bottom: 4px;
}

.badge-desc {
    font-size: 11px;
    color: var(--text-muted);
}


/* --- TAB 5: TEACHER'S NOTES & FEEDBACK --- */

.feedback-layout {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 32px;
}

.teachers-list-panel {
    background-color: var(--bg-card);
    border: 1px solid rgba(240, 222, 202, 0.5);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.teacher-select-card {
    padding: 16px;
    border-radius: var(--radius-md);
    border: 1px solid rgba(240, 222, 202, 0.5);
    display: flex;
    align-items: center;
    gap: 14px;
    cursor: pointer;
    transition: var(--transition-fast);
}

.teacher-select-card:hover {
    border-color: var(--primary);
    background-color: var(--primary-light);
}

.teacher-select-card.active {
    background-color: var(--primary-light);
    border-color: var(--primary);
}

.teacher-select-avatar {
    width: 46px;
    height: 46px;
    border-radius: var(--radius-md);
    object-fit: cover;
}

.teacher-select-details {
    display: flex;
    flex-direction: column;
}

.teacher-select-name {
    font-weight: 700;
    font-size: 14px;
}

.teacher-select-sub {
    font-size: 12px;
    color: var(--text-muted);
}

.feedback-details-panel {
    background-color: var(--bg-card);
    border: 1px solid rgba(240, 222, 202, 0.5);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-sm);
}

.feedback-main-header {
    display: flex;
    align-items: center;
    gap: 20px;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 24px;
    margin-bottom: 24px;
}

.feedback-main-avatar {
    width: 72px;
    height: 72px;
    border-radius: var(--radius-lg);
    object-fit: cover;
    border: 3px solid var(--primary-light);
}

.feedback-main-info h3 {
    font-size: 22px;
    margin-bottom: 4px;
}

.feedback-main-tags {
    display: flex;
    gap: 8px;
}

.feedback-tag {
    font-size: 11px;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: var(--radius-full);
}

.tag-en { background-color: var(--primary-light); color: var(--primary); }
.tag-de { background-color: var(--warning-light); color: var(--warning); }

.feedback-ratings {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 32px;
}

.rating-box {
    background-color: var(--bg-page);
    border-radius: var(--radius-md);
    padding: 16px;
    text-align: center;
    border: 1px solid rgba(240, 222, 202, 0.3);
}

.rating-label {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.rating-stars {
    color: var(--secondary);
    font-size: 18px;
}

.feedback-report-box {
    background-color: var(--secondary-light);
    border-radius: var(--radius-md);
    padding: 24px;
    border-left: 5px solid var(--primary);
    line-height: 1.6;
    font-size: 14px;
    color: var(--text-dark);
}

.feedback-report-box h4 {
    font-size: 16px;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Homework widget section */
.homework-box {
    margin-top: 32px;
    border-top: 2px dashed var(--border-color);
    padding-top: 24px;
}

.homework-status-badge {
    display: inline-block;
    font-size: 11px;
    font-weight: 700;
    padding: 4px 10px;
    border-radius: var(--radius-full);
    margin-bottom: 12px;
}

.hw-pending { background-color: var(--warning-light); color: var(--warning); }
.hw-completed { background-color: var(--success-light); color: var(--success); }

.homework-submit-area {
    display: flex;
    gap: 12px;
    margin-top: 16px;
}

.homework-input {
    flex-grow: 1;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 12px 16px;
    font-family: inherit;
    font-size: 13px;
}

.homework-btn {
    background-color: var(--primary);
    color: #fff;
    font-weight: 700;
    padding: 12px 24px;
    border-radius: var(--radius-md);
}

.homework-btn:hover {
    background-color: var(--primary-hover);
    box-shadow: var(--shadow-glow);
}


/* --- SCREEN: LOGIN / WELCOME SCREEN --- */

.login-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: radial-gradient(circle at 10% 20%, #FFFDFB 0%, #FFF3EB 90%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    transition: var(--transition);
}

.login-card {
    background-color: var(--bg-card);
    border: 1px solid rgba(240, 222, 202, 0.6);
    border-radius: var(--radius-lg);
    width: 440px;
    padding: 48px;
    box-shadow: var(--shadow-lg);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.login-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 6px;
    background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
}

.login-header-icon {
    font-size: 64px;
    margin-bottom: 16px;
    display: inline-block;
    animation: float 4s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

.login-title {
    font-size: 28px;
    font-weight: 800;
    margin-bottom: 8px;
    color: var(--text-dark);
}

.login-subtitle {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 32px;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.form-group {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
}

.form-label {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-dark);
}

.input-wrapper {
    position: relative;
    width: 100%;
}

.form-input {
    width: 100%;
    background-color: var(--bg-page);
    border: 1px solid rgba(240, 222, 202, 0.7);
    border-radius: var(--radius-md);
    padding: 14px 16px 14px 44px;
    font-size: 14px;
    font-family: inherit;
    color: var(--text-dark);
    transition: var(--transition-fast);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary);
    background-color: #fff;
    box-shadow: 0 0 0 4px rgba(232, 98, 10, 0.1);
}

.input-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    stroke: var(--text-light);
    stroke-width: 2;
    fill: none;
}

.login-submit-btn {
    background: linear-gradient(135deg, var(--primary) 0%, #FF8533 100%);
    color: #fff;
    font-weight: 700;
    padding: 16px;
    border-radius: var(--radius-md);
    font-size: 15px;
    box-shadow: var(--shadow-glow);
    margin-top: 10px;
}

.login-submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 28px rgba(232, 98, 10, 0.35);
}

.login-footer-link {
    margin-top: 24px;
    font-size: 12px;
    color: var(--text-light);
    font-weight: 600;
}

.login-footer-link a {
    color: var(--primary);
}


/* --- RESPONSIVENESS AND MOBILE MEDIA QUERIES --- */

@media (max-width: 1200px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .courses-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .classroom-layout {
        grid-template-columns: 1fr;
    }
    .feedback-layout {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 992px) {
    .dashboard-sections {
        grid-template-columns: 1fr;
    }
    .sidebar {
        width: var(--sidebar-collapsed-width);
        padding: 20px 10px;
        align-items: center;
    }
    .logo-text, .logo-badge, .profile-info, .sidebar-profile::after, .logout-btn {
        display: none;
    }
    .sidebar-logo {
        padding: 10px 0 30px 0;
    }
    .menu-item a span {
        display: none;
    }
    .menu-item a {
        padding: 14px;
        justify-content: center;
    }
    .sidebar-profile {
        padding: 4px;
        background: none;
        border: none;
    }
    .profile-avatar {
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    .courses-grid {
        grid-template-columns: 1fr;
    }
    .badges-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .topbar {
        padding: 0 20px;
    }
    .content-body {
        padding: 20px;
    }
    .welcome-card {
        padding: 24px;
        flex-direction: column;
        text-align: center;
        gap: 20px;
    }
    .welcome-decor-fox {
        font-size: 60px;
    }
}