/* App Pages Styles (Dashboard, Practice, Profile, Assessment, Lesson) */

/* === Dashboard === */
.level-overview {
    display: flex;
    align-items: center;
    gap: 40px;
    padding: 32px;
}

.level-ring {
    position: relative;
    flex-shrink: 0;
}

.level-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.level-stat {
    text-align: center;
}

.level-stat__num {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--text-primary);
}

.level-stat__label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 4px;
}

.streak-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(255, 107, 107, 0.1);
    border: 1px solid rgba(255, 107, 107, 0.3);
    border-radius: var(--radius-full);
    font-weight: 600;
    color: #FF6B6B;
}

.notification-bell {
    position: relative;
    font-size: 1.3rem;
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast);
}

.notification-bell:hover {
    background: var(--bg-surface);
}

.notification-bell__dot {
    position: absolute;
    top: 6px;
    right: 6px;
    width: 8px;
    height: 8px;
    background: var(--accent-coral);
    border-radius: 50%;
}

/* === Recommended Lesson Card === */
.recommended-card {
    border: 1px solid rgba(108, 92, 231, 0.3);
    background: linear-gradient(135deg, rgba(108, 92, 231, 0.05), rgba(0, 210, 255, 0.05));
}

.recommended-card__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}

.recommended-card__meta {
    display: flex;
    gap: 16px;
    margin-top: 12px;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* === Activity Timeline === */
.activity-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.activity-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 14px 0;
    border-bottom: 1px solid var(--border-glass);
}

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

.activity-item__icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.activity-item__content {
    flex: 1;
}

.activity-item__title {
    font-weight: 500;
    font-size: 0.9rem;
}

.activity-item__time {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* === Assessment === */
.assessment-steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    padding: 24px 0;
}

.assessment-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.assessment-step__circle {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    background: var(--bg-surface);
    border: 2px solid var(--border-glass);
    transition: all var(--transition-normal);
}

.assessment-step--completed .assessment-step__circle {
    background: var(--accent-green);
    border-color: var(--accent-green);
}

.assessment-step--active .assessment-step__circle {
    border-color: var(--primary);
    box-shadow: 0 0 15px rgba(108, 92, 231, 0.5);
    animation: glow 2s ease-in-out infinite;
}

.assessment-step__label {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
}

.assessment-step--active .assessment-step__label {
    color: var(--primary-light);
}

.assessment-connector {
    width: 60px;
    height: 2px;
    background: var(--border-glass);
    margin-bottom: 24px;
}

.assessment-connector--completed {
    background: var(--accent-green);
}

.question-card {
    padding: 32px;
}

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

.timer-badge {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: rgba(108, 92, 231, 0.15);
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 0.9rem;
}

.timer-badge--warning {
    background: rgba(255, 107, 107, 0.15);
    color: var(--accent-coral);
}

.passage-box {
    background: var(--bg-input);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    padding: 24px;
    margin: 20px 0;
    max-height: 250px;
    overflow-y: auto;
    line-height: 1.8;
    color: var(--text-secondary);
}

.options-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 20px;
}

.option-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    background: var(--bg-surface);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.option-card:hover {
    border-color: var(--primary);
    background: rgba(108, 92, 231, 0.08);
}

.option-card--selected {
    border-color: var(--primary);
    background: rgba(108, 92, 231, 0.15);
}

.option-radio {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 2px solid var(--text-muted);
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.option-card--selected .option-radio {
    border-color: var(--primary);
    background: var(--primary);
}

.option-card--selected .option-radio::after {
    content: '✓';
    color: white;
    font-size: 0.7rem;
}

/* === AI Panel === */
.ai-panel {
    border: 1px solid rgba(0, 210, 255, 0.2);
}

.ai-panel__header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
}

.ai-panel__dot {
    width: 8px;
    height: 8px;
    background: var(--accent-green);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

.ai-message {
    background: rgba(0, 210, 255, 0.05);
    border: 1px solid rgba(0, 210, 255, 0.1);
    border-radius: var(--radius-md);
    padding: 16px;
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--text-secondary);
}

/* === Question Nav Dots === */
.question-dots {
    display: flex;
    gap: 6px;
    justify-content: center;
    align-items: center;
}

.question-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--bg-surface);
    border: 1px solid var(--border-glass);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.question-dot--current {
    background: var(--primary);
    border-color: var(--primary);
    box-shadow: 0 0 8px rgba(108, 92, 231, 0.5);
}

.question-dot--answered {
    background: var(--accent-green);
    border-color: var(--accent-green);
}

/* === Lesson Chat === */
.lesson-layout {
    display: grid;
    grid-template-columns: 250px 1fr 280px;
    height: calc(100vh - 65px);
}

.lesson-outline {
    background: var(--bg-deep);
    border-right: 1px solid var(--border-glass);
    padding: 24px 16px;
    overflow-y: auto;
}

.lesson-outline__title {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    margin-bottom: 12px;
}

.lesson-steps {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.lesson-step {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.lesson-step:hover {
    background: var(--bg-surface);
}

.lesson-step--active {
    background: rgba(108, 92, 231, 0.15);
    color: var(--primary-light);
}

.lesson-step--completed {
    color: var(--accent-green);
}

.lesson-step__icon {
    font-size: 1rem;
    width: 20px;
    text-align: center;
}

.chat-area {
    display: flex;
    flex-direction: column;
    background: var(--bg-deep);
}

.chat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 24px;
    border-bottom: 1px solid var(--border-glass);
    background: rgba(15, 15, 35, 0.9);
}

.chat-header__left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.chat-msg {
    display: flex;
    gap: 12px;
    max-width: 80%;
}

.chat-msg--ai {
    align-self: flex-start;
}

.chat-msg--user {
    align-self: flex-end;
    flex-direction: row-reverse;
}

.chat-msg__avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    flex-shrink: 0;
}

.chat-msg--ai .chat-msg__avatar {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
}

.chat-msg--user .chat-msg__avatar {
    background: var(--bg-surface);
}

.chat-msg__content {
    padding: 14px 18px;
    border-radius: var(--radius-lg);
    line-height: 1.6;
    font-size: 0.95rem;
}

.chat-msg--ai .chat-msg__content {
    background: var(--bg-surface);
    border: 1px solid var(--border-glass);
    border-bottom-left-radius: 4px;
}

.chat-msg--user .chat-msg__content {
    background: linear-gradient(135deg, var(--primary), #5a4bd1);
    border-bottom-right-radius: 4px;
}

.chat-msg__feedback {
    margin-top: 8px;
    padding: 12px;
    background: rgba(0, 210, 255, 0.05);
    border: 1px solid rgba(0, 210, 255, 0.15);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
}

.chat-msg__feedback-item {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 4px;
}

.chat-input-area {
    padding: 16px 24px;
    border-top: 1px solid var(--border-glass);
    background: rgba(15, 15, 35, 0.9);
}

.chat-quick-actions {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
}

.quick-action-btn {
    padding: 6px 12px;
    background: var(--bg-surface);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    font-size: 0.8rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.quick-action-btn:hover {
    background: rgba(108, 92, 231, 0.15);
    color: var(--primary-light);
    border-color: var(--primary);
}

.chat-input-row {
    display: flex;
    gap: 12px;
    align-items: center;
}

.chat-input {
    flex: 1;
    padding: 14px 18px;
    background: var(--bg-input);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-size: 0.95rem;
    resize: none;
}

.chat-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(108, 92, 231, 0.15);
}

.chat-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: all var(--transition-fast);
}

.chat-btn--voice {
    background: rgba(0, 210, 255, 0.15);
    border: 1px solid rgba(0, 210, 255, 0.3);
    color: var(--secondary);
}

.chat-btn--send {
    background: var(--primary);
    color: white;
}

.chat-btn:hover {
    transform: scale(1.05);
}

/* Analysis Panel */
.analysis-panel {
    background: var(--bg-deep);
    border-left: 1px solid var(--border-glass);
    padding: 24px 16px;
    overflow-y: auto;
}

.analysis-section {
    margin-bottom: 24px;
}

.analysis-section__title {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    margin-bottom: 12px;
}

.score-gauge {
    width: 80px;
    height: 80px;
    margin: 0 auto 16px;
}

.skill-mini-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
    font-size: 0.8rem;
}

.skill-mini-bar__label {
    width: 80px;
    color: var(--text-secondary);
    font-size: 0.75rem;
}

.skill-mini-bar__bar {
    flex: 1;
    height: 6px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 3px;
    overflow: hidden;
}

.skill-mini-bar__fill {
    height: 100%;
    border-radius: 3px;
}

.skill-mini-bar__value {
    width: 32px;
    text-align: right;
    font-weight: 600;
    font-size: 0.75rem;
}

.ai-tip {
    padding: 10px 12px;
    background: rgba(0, 210, 255, 0.05);
    border-left: 2px solid var(--secondary);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.new-word {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    background: var(--bg-surface);
    border-radius: var(--radius-sm);
    margin-bottom: 6px;
    font-size: 0.85rem;
}

.new-word__word {
    font-weight: 600;
    color: var(--text-primary);
}

.new-word__type {
    font-size: 0.7rem;
    color: var(--text-muted);
}

/* === Practice Hub === */
.practice-card {
    padding: 32px;
    position: relative;
    overflow: hidden;
}

.practice-card__glow {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
}

.practice-card__icon {
    width: 72px;
    height: 72px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.2rem;
    margin-bottom: 16px;
}

.practice-card__types {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 12px;
}

.practice-type-tag {
    padding: 4px 10px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.difficulty-selector {
    display: flex;
    gap: 4px;
    margin-top: 16px;
}

.difficulty-btn {
    padding: 6px 12px;
    background: transparent;
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    font-size: 0.75rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.difficulty-btn:hover {
    border-color: var(--primary);
    color: var(--text-secondary);
}

.difficulty-btn--active {
    background: rgba(108, 92, 231, 0.2);
    border-color: var(--primary);
    color: var(--primary-light);
}

.practice-card__stat {
    margin-top: 12px;
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Recommended Exercises */
.exercise-card {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px;
}

.exercise-card__border {
    width: 4px;
    height: 48px;
    border-radius: 2px;
    flex-shrink: 0;
}

.exercise-card__info {
    flex: 1;
}

.exercise-card__title {
    font-weight: 600;
    font-size: 0.95rem;
}

.exercise-card__meta {
    display: flex;
    gap: 12px;
    margin-top: 6px;
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* === Profile Page === */
.profile-header {
    display: flex;
    align-items: center;
    gap: 32px;
    padding: 32px;
}

.profile-avatar {
    width: 96px;
    height: 96px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    font-weight: 800;
    flex-shrink: 0;
    border: 3px solid rgba(108, 92, 231, 0.3);
}

.profile-info {
    flex: 1;
}

.profile-info__name {
    font-size: 1.5rem;
    font-weight: 700;
}

.profile-info__email {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.profile-level {
    text-align: center;
}

.profile-level__badge {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 900;
    margin: 0 auto 8px;
    box-shadow: 0 0 20px rgba(108, 92, 231, 0.4);
}

.profile-level__target {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.profile-stats-row {
    display: flex;
    gap: 24px;
}

.profile-stat {
    text-align: center;
    padding: 12px 20px;
    background: var(--bg-surface);
    border-radius: var(--radius-md);
}

.profile-stat__value {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 700;
}

.profile-stat__label {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 4px;
}

/* Strength/Weakness Lists */
.sw-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.sw-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    background: var(--bg-surface);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
}

.sw-item__icon {
    font-size: 1rem;
}

/* History Table */
.history-table {
    width: 100%;
    border-collapse: collapse;
}

.history-table th {
    text-align: left;
    padding: 12px 16px;
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    font-weight: 600;
    border-bottom: 1px solid var(--border-glass);
}

.history-table td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border-glass);
    font-size: 0.9rem;
}

.history-table tr:hover td {
    background: var(--bg-surface);
}

/* Vocab Cards */
.vocab-stats {
    display: flex;
    gap: 16px;
    margin-bottom: 20px;
}

.vocab-stat {
    padding: 8px 16px;
    background: var(--bg-surface);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
}

.vocab-stat__num {
    font-weight: 700;
    margin-right: 4px;
}

.vocab-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.vocab-card {
    padding: 16px;
    background: var(--bg-surface);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
}

.vocab-card__word {
    font-weight: 700;
    font-size: 1rem;
    margin-bottom: 4px;
}

.vocab-card__meaning {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.vocab-card__status {
    margin-top: 8px;
}

/* Quick Stats Bar */
.quick-stats {
    display: flex;
    gap: 16px;
}

.quick-stat {
    flex: 1;
    padding: 16px;
    text-align: center;
}

.quick-stat__icon {
    font-size: 1.5rem;
    margin-bottom: 8px;
}

.quick-stat__value {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 700;
}

.quick-stat__label {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 4px;
}

/* Two-column layout */
.two-col {
    display: grid;
    grid-template-columns: 3fr 2fr;
    gap: var(--space-lg);
}

/* === Mobile Hamburger Button === */
.hamburger-btn {
    display: none;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    background: var(--bg-surface);
    border: 1px solid var(--border-glass);
    color: var(--text-primary);
    font-size: 1.3rem;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    z-index: 1001;
}

/* === Sidebar Overlay (mobile) === */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 999;
    backdrop-filter: blur(4px);
}

.sidebar-overlay.active {
    display: block;
}

/* Loading skeleton */
@keyframes shimmer {
    0% { background-position: -200px 0; }
    100% { background-position: calc(200px + 100%) 0; }
}

.skeleton {
    background: linear-gradient(90deg, rgba(255,255,255,0.03) 25%, rgba(255,255,255,0.08) 50%, rgba(255,255,255,0.03) 75%);
    background-size: 200px 100%;
    animation: shimmer 1.5s infinite;
    border-radius: 8px;
}

/* ===== Tablet ===== */
@media (max-width: 1024px) {
    .lesson-layout {
        grid-template-columns: 1fr;
    }

    .lesson-outline,
    .analysis-panel {
        display: none;
    }

    .two-col {
        grid-template-columns: 1fr;
    }

    .vocab-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .grid-4 {
        grid-template-columns: repeat(2, 1fr) !important;
    }
}

/* ===== Mobile ===== */
@media (max-width: 768px) {
    .hamburger-btn {
        display: flex;
    }

    .sidebar {
        position: fixed;
        left: -280px;
        top: 0;
        bottom: 0;
        z-index: 1000;
        transition: left 0.3s ease;
        width: 260px;
    }

    .sidebar.open {
        left: 0;
    }

    .app-layout {
        grid-template-columns: 1fr !important;
    }

    .main-content {
        width: 100vw;
    }

    .top-bar {
        padding: 12px 16px !important;
    }

    .top-bar__left h2,
    .top-bar__left #welcome-text {
        font-size: 1rem;
    }

    .page-content {
        padding: 16px !important;
    }

    .level-overview {
        flex-direction: column;
        gap: 20px;
        padding: 20px;
        text-align: center;
    }

    .level-stats {
        gap: 12px;
    }

    .grid-4 {
        grid-template-columns: 1fr 1fr !important;
        gap: 12px !important;
    }

    .grid-2 {
        grid-template-columns: 1fr !important;
    }

    .two-col {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .glass-card {
        padding: 16px;
    }

    /* Assessment question grid */
    #question-grid {
        grid-template-columns: 1fr !important;
    }

    /* Chat area */
    .chat-msg {
        max-width: 95%;
    }

    .chat-quick-actions {
        flex-wrap: wrap;
    }

    /* Hide streak badge on very small screens */
    .streak-badge {
        display: none;
    }
}