/* ==========================================================================
   AILingo Kid - Stylesheet
   Designed for Kids (Grade 2) & LG webOS TV (Large Text, High Contrast, Magic Remote Friendly)
   ========================================================================== */

/* Design System & Themes */
:root {
    /* Fonts */
    --font-family: 'Quicksand', system-ui, -apple-system, sans-serif;
    
    /* Day Mode (Default) Palette - Light & Playful Pastel */
    --bg-app: linear-gradient(135deg, #e0f2fe 0%, #e0e7ff 100%);
    --bg-sidebar: #ffffff;
    --bg-card: #ffffff;
    --bg-input: #f1f5f9;
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --border-color: rgba(226, 232, 240, 0.8);
    --card-shadow: 0 10px 25px -5px rgba(148, 163, 184, 0.15), 0 8px 10px -6px rgba(148, 163, 184, 0.1);
    --glow-effect: 0 0 15px rgba(99, 102, 241, 0.2);
    
    /* Character Colors */
    --color-teddy: #ffb703;      /* Cute Golden Yellow */
    --color-kitty: #ff85a2;      /* Coral Pink */
    --color-puppy: #2ec4b6;      /* Bright Turquoise */
    --color-owl: #8338ec;        /* Playful Violet */
    --color-star: #ffbe0b;       /* Gold Star */
    --color-correct: #38b000;   /* Healthy Green */
    --color-wrong: #d90429;     /* Soft Red */
    --color-gray: #94a3b8;
    
    /* UI Sizing for TV Readability */
    --btn-radius: 20px;
    --card-radius: 28px;
    --transition-speed: 0.3s;
}

body.night-mode {
    /* Night Mode Palette - Dark Cyber Space & Glowing Accents */
    --bg-app: linear-gradient(135deg, #0f172a 0%, #1e1b4b 100%);
    --bg-sidebar: rgba(15, 23, 42, 0.95);
    --bg-card: rgba(30, 41, 59, 0.85);
    --bg-input: #0f172a;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --border-color: rgba(99, 102, 241, 0.2);
    --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.5), 0 0 20px rgba(99, 102, 241, 0.1);
    --glow-effect: 0 0 20px rgba(99, 102, 241, 0.5);
}

/* Global resets & Base styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
    height: 100%;
    font-family: var(--font-family);
    background: var(--bg-app);
    color: var(--text-primary);
    overflow: hidden;
    font-size: 16px; /* standard base */
    transition: background var(--transition-speed) ease;
}

/* Adjustments for TV mode / Big Screens */
@media screen and (min-width: 1280px) {
    html {
        font-size: 18px; /* Scales everything up */
    }
}
@media screen and (min-width: 1920px) {
    html {
        font-size: 22px; /* Large 1080p TV scaling */
    }
}

/* Scrollbars */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: var(--color-gray);
    border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

/* Layout */
.app-container {
    display: flex;
    width: 100%;
    height: 100vh;
    position: relative;
}

/* Sidebar Styling */
.sidebar {
    width: 280px;
    background: var(--bg-sidebar);
    border-right: 2px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 24px 16px;
    height: 100%;
    z-index: 10;
    backdrop-filter: blur(10px);
    transition: all var(--transition-speed) ease;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 30px;
    padding: 0 8px;
}

.logo-emoji {
    font-size: 2.2rem;
    filter: drop-shadow(0 4px 6px rgba(0,0,0,0.1));
}

.logo-text {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-primary);
}

.logo-text span {
    color: var(--color-owl);
}

.nav-menu {
    display: flex;
    flex-direction: column;
    gap: 12px;
    flex-grow: 1;
    overflow-y: auto;
    padding-right: 4px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 14px 20px;
    background: transparent;
    border: 3px solid transparent;
    border-radius: var(--btn-radius);
    color: var(--text-secondary);
    font-family: var(--font-family);
    font-size: 1rem;
    font-weight: 600;
    text-align: left;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-item:hover {
    background: var(--bg-input);
    color: var(--text-primary);
    transform: translateX(4px);
}

.nav-item.active {
    background: var(--color-owl);
    color: #ffffff;
    border-color: rgba(255, 255, 255, 0.2);
    box-shadow: 0 8px 20px rgba(131, 56, 236, 0.35);
}

/* TV Focus states - Highly Visible & Pop out on TV screens */
.nav-item:focus,
button:focus,
select:focus,
input:focus,
textarea:focus,
.map-node:focus,
.preset-btn:focus,
.quick-opt-btn:focus {
    outline: 4px solid var(--color-star) !important;
    outline-offset: 3px;
    transform: scale(1.05) !important;
    box-shadow: 0 0 25px var(--color-star) !important;
    z-index: 99;
}

.nav-icon {
    font-size: 1.4rem;
}

.sidebar-footer {
    padding-top: 16px;
    border-top: 2px solid var(--border-color);
}

.btn-settings {
    width: 100%;
    padding: 12px;
    border-radius: var(--btn-radius);
    background: var(--bg-input);
    border: 2px solid transparent;
    color: var(--text-primary);
    font-family: var(--font-family);
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.2s;
}

.btn-settings:hover {
    background: var(--border-color);
    transform: scale(1.02);
}

/* Main Content Area */
.main-content {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    height: 100%;
    position: relative;
    overflow: hidden;
}

/* Header */
.top-header {
    height: 80px;
    padding: 0 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 2px solid var(--border-color);
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(8px);
    z-index: 5;
}

.user-badge {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-avatar {
    font-size: 2.2rem;
    background: var(--color-teddy);
    border-radius: 50%;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

.user-info {
    display: flex;
    flex-direction: column;
}

.user-name {
    font-weight: 700;
    font-size: 1.1rem;
}

.user-level-tag {
    font-size: 0.8rem;
    font-weight: 600;
    background: var(--color-owl);
    color: #ffffff;
    padding: 2px 8px;
    border-radius: 10px;
    width: max-content;
    margin-top: 2px;
}

.status-widgets {
    display: flex;
    align-items: center;
    gap: 16px;
}

.widget-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    border-radius: var(--btn-radius);
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    box-shadow: var(--card-shadow);
    color: var(--text-primary);
    cursor: pointer;
    font-family: var(--font-family);
    font-weight: 700;
    transition: all 0.2s;
}

.widget-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 15px rgba(0,0,0,0.05);
}

.star-counter {
    background: linear-gradient(135deg, #fff3b0 0%, #ffd166 100%);
    border-color: #ffd166;
    color: #b57c00;
}

body.night-mode .star-counter {
    background: linear-gradient(135deg, #4d3d00 0%, #997300 100%);
    border-color: #ffbe0b;
    color: #ffea79;
    box-shadow: 0 0 15px rgba(255, 190, 11, 0.3);
}

.star-icon {
    font-size: 1.4rem;
    animation: pulse 1.5s infinite alternate;
}

.star-value {
    font-size: 1.2rem;
}

.widget-label {
    font-size: 0.8rem;
    font-weight: 500;
    opacity: 0.8;
}

/* Page Containers */
.content-body {
    flex-grow: 1;
    padding: 24px 32px;
    overflow-y: auto;
    position: relative;
}

.page-section {
    display: none;
    height: 100%;
    animation: fadeIn 0.4s ease-out forwards;
}

.page-section.active {
    display: block;
}

/* Global Cards */
.card {
    background: var(--bg-card);
    border-radius: var(--card-radius);
    border: 2px solid var(--border-color);
    box-shadow: var(--card-shadow);
    padding: 24px;
    margin-bottom: 24px;
    backdrop-filter: blur(10px);
    transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
}

.card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.card-header h3 {
    font-size: 1.3rem;
    font-weight: 700;
}

.header-icon {
    font-size: 1.8rem;
}

.subtitle {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-top: -12px;
    margin-bottom: 20px;
}

/* Grid helper layout */
.feature-layout-two-col {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 24px;
    height: 100%;
}

@media screen and (max-width: 1024px) {
    .feature-layout-two-col {
        grid-template-columns: 1fr;
    }
}

/* Button Designs */
.btn-primary {
    background: linear-gradient(135deg, #8338ec 0%, #3a86c8 100%);
    color: #ffffff;
    border: none;
    border-radius: var(--btn-radius);
    padding: 12px 24px;
    font-family: var(--font-family);
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    box-shadow: 0 6px 15px rgba(131, 56, 236, 0.3);
    transition: all 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-primary:hover {
    transform: translateY(-3px) scale(1.03);
    box-shadow: 0 10px 20px rgba(131, 56, 236, 0.45);
}

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

.btn-secondary {
    background: var(--bg-input);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--btn-radius);
    padding: 10px 20px;
    font-family: var(--font-family);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-secondary:hover {
    background: var(--border-color);
    transform: translateY(-2px);
}

.btn-large {
    padding: 16px 32px;
    font-size: 1.15rem;
}

.glow-effect {
    position: relative;
    overflow: hidden;
}
.glow-effect::after {
    content: '';
    position: absolute;
    top: 0; left: -50%; width: 200%; height: 100%;
    background: linear-gradient(to right, transparent, rgba(255,255,255,0.3), transparent);
    transform: skewX(-25deg);
    transition: 0.75s;
    opacity: 0;
}
.glow-effect:hover::after {
    left: 125%;
    opacity: 1;
}

/* Custom inputs */
.custom-input {
    width: 100%;
    padding: 14px 20px;
    background: var(--bg-input);
    border: 2px solid var(--border-color);
    border-radius: var(--btn-radius);
    font-family: var(--font-family);
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
    transition: border-color 0.2s;
}

.custom-input:focus {
    border-color: var(--color-owl);
}

.custom-input-large {
    flex-grow: 1;
    padding: 16px 24px;
    background: var(--bg-input);
    border: 3px solid var(--border-color);
    border-radius: var(--btn-radius);
    font-family: var(--font-family);
    color: var(--text-primary);
    font-size: 1.15rem;
    font-weight: 600;
}

/* Custom select dropdown */
.custom-select {
    padding: 14px 20px;
    background: var(--bg-input);
    border: 2px solid var(--border-color);
    border-radius: var(--btn-radius);
    font-family: var(--font-family);
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
    width: 100%;
    cursor: pointer;
}

.custom-select-small {
    padding: 8px 16px;
    background: var(--bg-input);
    border: 2px solid var(--border-color);
    border-radius: 14px;
    font-family: var(--font-family);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
}

/* ==========================================================================
   Page Specific Component Styles
   ========================================================================== */

/* SECTION 1: DASHBOARD & TREASURE MAP */
.welcome-banner {
    background: linear-gradient(135deg, #ffb703 0%, #ff85a2 100%);
    border-radius: var(--card-radius);
    padding: 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    color: #ffffff;
    box-shadow: 0 10px 25px rgba(255, 133, 162, 0.3);
}

.welcome-text h2 {
    font-size: 1.6rem;
    margin-bottom: 8px;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.welcome-text p {
    font-size: 1.05rem;
    opacity: 0.9;
}

.banner-mascot {
    font-size: 4rem;
    animation: float 4s ease-in-out infinite;
}

/* Daily Generator */
.generator-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    align-items: flex-end;
    margin-bottom: 20px;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex-grow: 1;
    min-width: 200px;
}

.control-group label {
    font-weight: 700;
    font-size: 0.95rem;
}

.button-selector {
    display: flex;
    gap: 10px;
}

.select-btn {
    flex-grow: 1;
    padding: 12px 18px;
    border-radius: var(--btn-radius);
    border: 2px solid var(--border-color);
    background: var(--bg-card);
    font-family: var(--font-family);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.select-btn.active {
    background: var(--color-owl);
    color: #ffffff;
    border-color: var(--color-owl);
}

/* Daily Lesson Render */
.daily-lesson-container {
    animation: slideDown 0.4s ease-out forwards;
}

.lesson-divider {
    height: 3px;
    background: var(--border-color);
    margin: 24px 0;
    border-radius: 2px;
}

.lesson-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

@media screen and (max-width: 768px) {
    .lesson-grid {
        grid-template-columns: 1fr;
    }
}

.lesson-box {
    background: var(--bg-input);
    border-radius: 20px;
    padding: 20px;
    border: 2px solid var(--border-color);
}

.lesson-box h4 {
    margin-bottom: 12px;
    color: var(--color-owl);
    font-size: 1.1rem;
}

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

.kid-item-card {
    background: var(--bg-card);
    border-radius: 14px;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 12px;
}

.kid-item-emoji {
    font-size: 1.5rem;
}

.kid-item-info {
    display: flex;
    flex-direction: column;
}

.kid-item-title {
    font-weight: 700;
    font-size: 0.95rem;
}

.kid-item-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.full-box {
    margin-top: 20px;
}

.convo-play-container {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 16px;
}

.convo-bubble {
    background: #ffffff;
    border: 2px solid var(--border-color);
    border-radius: 20px;
    padding: 16px;
    font-style: italic;
    color: var(--text-primary);
}

body.night-mode .convo-bubble {
    background: #1e293b;
}

.challenge-box {
    background: linear-gradient(135deg, rgba(255, 183, 3, 0.1) 0%, rgba(255, 133, 162, 0.1) 100%);
    border: 2px dashed var(--color-teddy);
    border-radius: 18px;
    padding: 18px;
    margin-top: 16px;
}

.challenge-box h5 {
    font-size: 0.95rem;
    font-weight: 700;
    color: #c98a00;
    margin-bottom: 6px;
}

.button-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 12px;
}

/* Treasure Map */
.map-grid {
    display: flex;
    gap: 16px;
    overflow-x: auto;
    padding: 16px 4px;
    scroll-snap-type: x mandatory;
}

.map-node {
    flex: 0 0 110px;
    height: 140px;
    background: var(--bg-input);
    border-radius: 20px;
    border: 3px solid var(--border-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    cursor: pointer;
    font-family: var(--font-family);
    transition: all 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    scroll-snap-align: start;
}

.map-node:hover {
    transform: translateY(-8px) scale(1.05);
    border-color: var(--color-teddy);
    box-shadow: 0 8px 15px rgba(255, 183, 3, 0.2);
}

.map-node.completed {
    background: linear-gradient(135deg, #ffb703 0%, #ffd166 100%);
    border-color: #ffb703;
    color: #ffffff;
}

.map-node.active {
    border-color: var(--color-owl);
    box-shadow: 0 0 15px rgba(131, 56, 236, 0.4);
    background: #ffffff;
    animation: pulseBorder 1.5s infinite alternate;
}

body.night-mode .map-node.active {
    background: #1e293b;
}

.map-node-day {
    font-size: 0.8rem;
    font-weight: 700;
    opacity: 0.8;
}

.map-node-icon {
    font-size: 1.8rem;
}

.map-node-stars {
    font-size: 0.75rem;
    font-weight: 700;
}

/* SECTION 2: PERSONAL TUTOR */
.tutor-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 70vh;
}

.tutor-mascot-card {
    max-width: 650px;
    width: 100%;
    background: var(--bg-card);
    border-radius: var(--card-radius);
    border: 3px dashed var(--color-teddy);
    padding: 32px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    box-shadow: var(--card-shadow);
}

.tutor-avatar-circle {
    font-size: 5rem;
    background: linear-gradient(135deg, #fff3b0 0%, #ffd166 100%);
    width: 130px;
    height: 130px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    box-shadow: 0 8px 20px rgba(255, 183, 3, 0.25);
    animation: float 4s ease-in-out infinite;
}

.speech-bubble {
    background: var(--bg-input);
    border-radius: 20px;
    padding: 20px;
    margin-bottom: 24px;
    position: relative;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    border: 2px solid var(--border-color);
    width: 100%;
}

.speech-bubble::before {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    border-width: 10px;
    border-style: solid;
    border-color: transparent transparent var(--border-color) transparent;
}

/* Quiz Test Panel */
.test-panel {
    width: 100%;
    background: var(--bg-input);
    border-radius: 20px;
    padding: 24px;
    margin-top: 20px;
    text-align: left;
    border: 2px solid var(--border-color);
}

.test-panel h4 {
    color: var(--color-owl);
    margin-bottom: 10px;
}

#test-question-text {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.test-options {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.test-opt-btn {
    padding: 14px 20px;
    border-radius: var(--btn-radius);
    border: 2px solid var(--border-color);
    background: var(--bg-card);
    font-family: var(--font-family);
    font-size: 1rem;
    font-weight: 600;
    text-align: left;
    cursor: pointer;
    transition: all 0.2s;
    color: var(--text-primary);
}

.test-opt-btn:hover {
    border-color: var(--color-owl);
    background: rgba(131, 56, 236, 0.05);
    transform: translateX(4px);
}

.test-opt-btn.correct {
    background: rgba(56, 176, 0, 0.15);
    border-color: var(--color-correct);
    color: var(--color-correct);
}

.test-opt-btn.wrong {
    background: rgba(217, 4, 41, 0.1);
    border-color: var(--color-wrong);
    color: var(--color-wrong);
}

/* Roadmap Result */
.roadmap-result-panel {
    margin-top: 24px;
    text-align: left;
    width: 100%;
}

.alert {
    padding: 16px;
    border-radius: 18px;
    margin-bottom: 20px;
    border: 2px solid transparent;
}
.alert-success {
    background: rgba(56, 176, 0, 0.1);
    border-color: rgba(56, 176, 0, 0.2);
    color: var(--color-correct);
}

.roadmap-timeline {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-top: 16px;
}

.roadmap-week {
    background: var(--bg-input);
    border-radius: 16px;
    padding: 16px;
    border: 2px solid var(--border-color);
}

.roadmap-week h5 {
    color: var(--color-owl);
    font-weight: 700;
    font-size: 1rem;
    margin-bottom: 8px;
}

.roadmap-week ul {
    list-style-type: none;
    padding-left: 8px;
}

.roadmap-week li {
    font-size: 0.9rem;
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.roadmap-week li::before {
    content: '⭐';
    font-size: 0.8rem;
}

/* SECTION 3: REFLEX SPEAKING & ROLEPLAY CHAT */
.chat-card {
    display: flex;
    flex-direction: column;
    height: 70vh;
    padding: 0;
    overflow: hidden;
}

.chat-card .card-header {
    padding: 16px 24px;
    border-bottom: 2px solid var(--border-color);
    margin-bottom: 0;
}

.flex-between {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.flex-align {
    display: flex;
    align-items: center;
    gap: 12px;
}

.chat-messages-container {
    flex-grow: 1;
    padding: 20px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
    background: rgba(248, 250, 252, 0.3);
}

body.night-mode .chat-messages-container {
    background: rgba(15, 23, 42, 0.2);
}

.message-bubble {
    max-width: 75%;
    padding: 14px 20px;
    border-radius: 22px;
    font-weight: 600;
    font-size: 1rem;
    line-height: 1.4;
    animation: popIn 0.3s ease-out forwards;
}

.message-bubble.ai {
    align-self: flex-start;
    background: #ffffff;
    color: var(--text-primary);
    border: 2px solid var(--border-color);
    border-top-left-radius: 4px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.02);
}

body.night-mode .message-bubble.ai {
    background: #1e293b;
}

.message-bubble.user {
    align-self: flex-end;
    background: linear-gradient(135deg, #06d6a0 0%, #2ec4b6 100%);
    color: #ffffff;
    border-top-right-radius: 4px;
    box-shadow: 0 4px 10px rgba(6, 214, 160, 0.2);
}

.msg-header {
    font-size: 0.75rem;
    font-weight: 700;
    opacity: 0.8;
    margin-bottom: 4px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.speak-btn-inline {
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    padding-left: 8px;
}

.chat-input-area {
    padding: 16px 20px;
    border-top: 2px solid var(--border-color);
    background: var(--bg-card);
}

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

.chat-input {
    flex-grow: 1;
    padding: 14px 20px;
    border-radius: var(--btn-radius);
    border: 2px solid var(--border-color);
    background: var(--bg-input);
    font-family: var(--font-family);
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
}

.btn-micro {
    background: var(--color-kitty);
    color: white;
    border: none;
    border-radius: 50%;
    width: 48px;
    height: 48px;
    font-size: 1.2rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 10px rgba(255, 133, 162, 0.3);
    transition: transform 0.2s;
}

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

.btn-micro.recording {
    background: var(--color-wrong);
    animation: flash 1s infinite;
}

/* Quick Suggest Buttons (Awesome for TV Magic Remote) */
.quick-suggest-header {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.quick-options-row {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 12px;
}

.quick-opt-btn {
    background: rgba(99, 102, 241, 0.08);
    border: 2px solid rgba(99, 102, 241, 0.2);
    border-radius: 14px;
    padding: 8px 16px;
    font-family: var(--font-family);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.2s;
}

.quick-opt-btn:hover {
    background: var(--color-owl);
    color: #ffffff;
    border-color: var(--color-owl);
    transform: translateY(-2px);
}

/* Feedback panel body */
.feedback-card {
    height: 70vh;
    overflow-y: auto;
}

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--color-gray);
    text-align: center;
    padding: 40px;
}

.empty-icon {
    font-size: 4rem;
    margin-bottom: 16px;
    opacity: 0.5;
}

.empty-state p {
    font-weight: 600;
    font-size: 1rem;
}

.feedback-item {
    background: var(--bg-input);
    border-radius: 18px;
    padding: 16px;
    margin-bottom: 16px;
    border: 2px solid var(--border-color);
}

.feedback-orig {
    font-style: italic;
    margin-bottom: 10px;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.feedback-tag {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 10px;
    font-size: 0.8rem;
    font-weight: 700;
    margin-right: 8px;
    color: white;
}

.tag-correct { background-color: var(--color-wrong); } /* Sửa lỗi */
.tag-exp { background-color: var(--color-teddy); color: #7f5c00; }     /* Giải thích */
.tag-native { background-color: var(--color-correct); } /* Tự nhiên */

.feedback-detail-box {
    margin-top: 8px;
    padding-left: 8px;
    border-left: 3px solid var(--border-color);
    font-size: 0.95rem;
    line-height: 1.4;
}

/* SECTION 4: PRONUNCIATION LAB */
.sentences-presets {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
    align-items: center;
}

.preset-btn {
    background: var(--bg-input);
    border: 2px solid var(--border-color);
    border-radius: 14px;
    padding: 8px 16px;
    font-family: var(--font-family);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.2s;
}

.preset-btn:hover {
    border-color: var(--color-owl);
    transform: scale(1.03);
}

.pronounce-input-row {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
}

.pronounce-results-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 20px;
    animation: fadeIn 0.4s;
}

@media screen and (max-width: 768px) {
    .pronounce-results-grid {
        grid-template-columns: 1fr;
    }
}

.result-box {
    background: var(--bg-input);
    border-radius: 20px;
    border: 2px solid var(--border-color);
    padding: 20px;
}

.result-box h4 {
    margin-bottom: 12px;
    font-size: 1.05rem;
    color: var(--color-owl);
}

.viet-phonetic-text {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-owl);
    background: #ffffff;
    border-radius: 14px;
    padding: 16px;
    border: 2px solid var(--border-color);
    text-align: center;
    letter-spacing: 1px;
    margin-bottom: 16px;
}

body.night-mode .viet-phonetic-text {
    background: #1e293b;
}

.audio-controls {
    display: flex;
    justify-content: center;
}

.btn-play-audio {
    background: var(--color-puppy);
    color: white;
    border: none;
    border-radius: var(--btn-radius);
    padding: 12px 24px;
    font-family: var(--font-family);
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 4px 10px rgba(46, 196, 182, 0.25);
    transition: transform 0.2s;
}

.btn-play-audio:hover {
    transform: scale(1.03);
}

.mouth-tips-list {
    list-style-type: none;
}

.mouth-tips-list li {
    font-size: 0.95rem;
    margin-bottom: 10px;
    display: flex;
    align-items: flex-start;
    gap: 8px;
}

.mouth-tips-list li::before {
    content: '👅';
}

.warning-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.warn-tag {
    background: rgba(219, 4, 41, 0.1);
    color: var(--color-wrong);
    border: 1px solid rgba(219, 4, 41, 0.2);
    border-radius: 10px;
    padding: 6px 12px;
    font-weight: 700;
    font-size: 0.9rem;
}

.practice-mic-section {
    margin-top: 24px;
}

.practice-divider {
    height: 2px;
    background: var(--border-color);
    margin: 20px 0;
}

.practice-controls {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-top: 16px;
}

.btn-micro-large {
    background: var(--color-owl);
    color: white;
    border: none;
    width: 64px;
    height: 64px;
    border-radius: 50%;
    font-size: 1.6rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 6px 15px rgba(131, 56, 236, 0.3);
    transition: transform 0.2s, background-color 0.2s;
}

.btn-micro-large:hover {
    transform: scale(1.08);
}

.btn-micro-large.recording {
    background: var(--color-wrong);
    animation: flash 1s infinite;
}

.practice-status {
    font-weight: 600;
    font-size: 1rem;
    color: var(--text-secondary);
}

.practice-result-stars {
    margin-top: 16px;
    background: linear-gradient(135deg, rgba(255, 243, 176, 0.3) 0%, rgba(255, 209, 102, 0.3) 100%);
    border-radius: 18px;
    padding: 16px;
    text-align: center;
    border: 2px solid #ffd166;
    animation: popIn 0.3s;
}

.star-rating {
    font-size: 2.2rem;
    margin-bottom: 8px;
}

.star-rating-text {
    font-size: 1.1rem;
    font-weight: 700;
    color: #9c6c00;
}

/* SECTION 5: SMART VOCABULARY & FLASHCARDS */
.vocab-layout {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 24px;
}

@media screen and (max-width: 1024px) {
    .vocab-layout {
        grid-template-columns: 1fr;
    }
}

.flashcard-container {
    perspective: 1000px;
    width: 320px;
    height: 400px;
    margin: 20px 0;
    cursor: pointer;
}

.flashcard {
    position: relative;
    width: 100%;
    height: 100%;
    transform-style: preserve-3d;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: var(--card-radius);
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
}

.flashcard-container.flipped .flashcard {
    transform: rotateY(180deg);
}

.card-face {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    border-radius: var(--card-radius);
    border: 3px solid var(--border-color);
    padding: 30px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: #ffffff;
}

body.night-mode .card-face {
    background: #1e293b;
    border-color: rgba(99, 102, 241, 0.3);
}

.card-front {
    background: linear-gradient(135deg, #ffffff 0%, #f0f7ff 100%);
}
body.night-mode .card-front {
    background: linear-gradient(135deg, #1e293b 0%, #1e1b4b 100%);
}

.card-back {
    transform: rotateY(180deg);
    background: linear-gradient(135deg, #ffffff 0%, #fdf2f8 100%);
}
body.night-mode .card-back {
    background: linear-gradient(135deg, #1e293b 0%, #31102f 100%);
}

.flashcard-emoji {
    font-size: 5rem;
    margin-bottom: 16px;
    filter: drop-shadow(0 6px 10px rgba(0,0,0,0.1));
}

.flashcard-word {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.flashcard-ipa {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-top: 4px;
    margin-bottom: 20px;
}

.btn-audio-small {
    background: var(--color-owl);
    color: white;
    border: none;
    border-radius: 12px;
    padding: 8px 16px;
    font-family: var(--font-family);
    font-weight: 700;
    cursor: pointer;
}

.card-hint-click {
    font-size: 0.75rem;
    color: var(--color-gray);
    margin-top: 30px;
    position: absolute;
    bottom: 20px;
}

.back-meaning {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-owl);
    margin-bottom: 24px;
    text-align: center;
}

.back-section {
    width: 100%;
    margin-bottom: 16px;
    text-align: left;
}

.back-section h5 {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.back-section p {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
}

.flashcard-nav {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-top: 10px;
}

.card-index {
    font-weight: 700;
    font-size: 1.1rem;
}

/* Vocab Quiz styling */
.quiz-question-box {
    background: var(--bg-input);
    border-radius: 18px;
    padding: 16px;
    border: 2px solid var(--border-color);
    margin-bottom: 20px;
}

.quiz-question-box p {
    font-weight: 700;
    font-size: 1.1rem;
}

.quiz-options-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
}

.quiz-opt-btn {
    background: #ffffff;
    border: 2px solid var(--border-color);
    border-radius: var(--btn-radius);
    padding: 14px 20px;
    font-family: var(--font-family);
    font-size: 1rem;
    font-weight: 600;
    text-align: left;
    cursor: pointer;
    transition: all 0.2s;
    color: var(--text-primary);
}

body.night-mode .quiz-opt-btn {
    background: #1e293b;
}

.quiz-opt-btn:hover {
    border-color: var(--color-owl);
    transform: scale(1.01);
}

.quiz-opt-btn.correct {
    background: rgba(56, 176, 0, 0.15);
    border-color: var(--color-correct);
    color: var(--color-correct);
}

.quiz-opt-btn.wrong {
    background: rgba(217, 4, 41, 0.1);
    border-color: var(--color-wrong);
    color: var(--color-wrong);
}

.quiz-feedback-box {
    margin-top: 16px;
    border-radius: 14px;
    padding: 12px;
    text-align: center;
    font-weight: 700;
}
.quiz-feedback-box.correct {
    background: rgba(56, 176, 0, 0.1);
    color: var(--color-correct);
}
.quiz-feedback-box.wrong {
    background: rgba(217, 4, 41, 0.1);
    color: var(--color-wrong);
}

/* SECTION 6: IELTS JUNIOR (Thầy Cú) */
.owl-host-container {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 24px;
}

.owl-avatar-large {
    font-size: 4.5rem;
    background: linear-gradient(135deg, #c084fc 0%, #818cf8 100%);
    width: 110px;
    height: 110px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 6px 15px rgba(131, 56, 236, 0.2);
}

.owl-bubble {
    background: var(--bg-input);
    border: 2px solid var(--color-owl);
    border-radius: 20px;
    padding: 18px;
    font-size: 1rem;
    line-height: 1.4;
    color: var(--text-primary);
    position: relative;
    flex-grow: 1;
}

.owl-bubble::before {
    content: '';
    position: absolute;
    right: 100%;
    top: 50%;
    transform: translateY(-50%);
    border-width: 10px;
    border-style: solid;
    border-color: transparent var(--color-owl) transparent transparent;
}

.ielts-controls {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-top: 20px;
}

.ielts-response-area {
    background: var(--bg-input);
    padding: 16px;
    border-radius: 20px;
    border: 2px solid var(--border-color);
    animation: slideDown 0.3s;
}

.ielts-grade-card {
    height: 70vh;
    overflow-y: auto;
}

.ielts-badge-display {
    text-align: center;
    margin-bottom: 16px;
    background: #ffffff;
    border: 2px solid var(--border-color);
    padding: 16px;
    border-radius: var(--btn-radius);
}
body.night-mode .ielts-badge-display {
    background: #1e293b;
}

.ielts-stars-row {
    font-size: 2.2rem;
    margin-bottom: 6px;
}

.ielts-award-text {
    font-weight: 700;
    font-size: 1.15rem;
    color: var(--color-owl);
}

.ielts-feedback-section {
    margin-top: 14px;
    border-top: 1px solid var(--border-color);
    padding-top: 12px;
}

.ielts-feedback-section h5 {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.ielts-feedback-section p {
    font-size: 0.95rem;
    font-weight: 600;
}

/* SECTION 7: FAVORITE CONTENT CONVERTER */
.preset-content-selector {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
    align-items: center;
}

.favorite-input-area {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
}

.converted-lesson-container {
    animation: fadeIn 0.4s;
}

.results-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

@media screen and (max-width: 768px) {
    .results-grid {
        grid-template-columns: 1fr;
    }
}

.chat-messages-container-static {
    background: var(--bg-input);
    border-radius: var(--btn-radius);
    padding: 14px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    max-height: 250px;
    overflow-y: auto;
}

.kid-paragraph {
    font-size: 1rem;
    line-height: 1.6;
    background: var(--bg-input);
    padding: 14px;
    border-radius: var(--btn-radius);
    border: 1px dashed var(--border-color);
}

/* SECTION 8: SMART WRITING DOCTOR */
.writing-presets {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
}

.writing-diff-area {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

@media screen and (max-width: 768px) {
    .writing-diff-area {
        grid-template-columns: 1fr;
    }
}

.writing-col-input {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.writing-col-input label, .writing-col-output label {
    font-weight: 700;
    font-size: 1.05rem;
}

.writing-textarea {
    width: 100%;
    height: 160px;
    padding: 16px;
    border-radius: var(--btn-radius);
    border: 3px solid var(--border-color);
    background: var(--bg-input);
    font-family: var(--font-family);
    color: var(--text-primary);
    font-size: 1.05rem;
    font-weight: 600;
    resize: none;
}

.writing-col-output {
    display: flex;
    flex-direction: column;
    gap: 12px;
    animation: fadeIn 0.4s;
}

.corrected-display-box {
    background: var(--bg-input);
    border: 2px solid var(--border-color);
    border-radius: var(--btn-radius);
    overflow: hidden;
}

.diff-header {
    background: var(--border-color);
    padding: 8px 16px;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-secondary);
}

.diff-body {
    padding: 16px;
    font-size: 1.15rem;
    font-weight: 600;
    line-height: 1.5;
}

.diff-del {
    text-decoration: line-through;
    color: var(--color-wrong);
    background-color: rgba(217, 4, 41, 0.1);
    padding: 2px 4px;
    border-radius: 4px;
    margin-right: 4px;
}

.diff-ins {
    color: var(--color-correct);
    background-color: rgba(56, 176, 0, 0.15);
    padding: 2px 6px;
    border-radius: 4px;
    font-weight: 700;
}

.feedback-explanation {
    background: linear-gradient(135deg, rgba(46, 196, 182, 0.1) 0%, rgba(131, 56, 236, 0.1) 100%);
    border: 2px dashed var(--color-puppy);
    border-radius: var(--btn-radius);
    padding: 16px;
}

.feedback-explanation h5 {
    color: #0b9386;
    margin-bottom: 6px;
    font-size: 0.95rem;
}

.feedback-explanation p {
    font-size: 0.95rem;
    line-height: 1.4;
}

/* SECTION 9: ROLEPLAY ARENA */
.roleplay-card {
    height: 75vh;
}

.scenario-intro-box {
    background: var(--bg-input);
    border: 2px solid var(--border-color);
    border-radius: 14px;
    padding: 12px 16px;
    font-size: 0.9rem;
    margin-bottom: 12px;
}

.confidence-meter-container {
    margin-bottom: 14px;
}

.meter-label {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.meter-bar {
    height: 22px;
    background: var(--bg-input);
    border-radius: 11px;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.meter-fill {
    height: 100%;
    background: linear-gradient(to right, var(--color-teddy), var(--color-puppy));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-weight: 700;
    font-size: 0.75rem;
    transition: width 0.5s ease-out;
}

/* ==========================================================================
   Modals & Settings
   ========================================================================== */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100;
    backdrop-filter: blur(5px);
    animation: fadeIn 0.25s;
}

.modal-overlay.hidden {
    display: none;
}

.modal-card {
    background: var(--bg-card);
    border-radius: var(--card-radius);
    border: 2px solid var(--border-color);
    max-width: 550px;
    width: 90%;
    box-shadow: 0 20px 40px rgba(0,0,0,0.2);
    overflow: hidden;
    animation: scaleUp 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

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

.modal-header h3 {
    font-size: 1.25rem;
    font-weight: 700;
}

.btn-close {
    background: transparent;
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    color: var(--text-secondary);
}

.modal-body {
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.settings-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.settings-label {
    font-weight: 700;
    font-size: 0.95rem;
}

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

.mode-selector-tabs {
    display: flex;
    gap: 10px;
}

.tab-btn {
    flex-grow: 1;
    padding: 10px;
    border-radius: 14px;
    border: 2px solid var(--border-color);
    background: var(--bg-card);
    font-family: var(--font-family);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    color: var(--text-primary);
}

.tab-btn.active {
    background: var(--color-owl);
    color: #ffffff;
    border-color: var(--color-owl);
}

.modal-footer {
    padding: 16px 24px;
    border-top: 2px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
}

.btn-danger {
    background: transparent;
    color: var(--color-wrong);
    border-color: rgba(217, 4, 41, 0.3);
}
.btn-danger:hover {
    background: rgba(217, 4, 41, 0.08);
}

.hidden {
    display: none !important;
}

/* ==========================================================================
   Animations & Keyframes
   ========================================================================== */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

@keyframes popIn {
    0% { transform: scale(0.85); opacity: 0; }
    100% { transform: scale(1); opacity: 1; }
}

@keyframes scaleUp {
    from { transform: scale(0.9); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

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

.animate-float {
    animation: float 4s ease-in-out infinite;
}

@keyframes pulse {
    0% { transform: scale(1); }
    100% { transform: scale(1.15); }
}

@keyframes pulseBorder {
    0% { border-color: var(--border-color); }
    100% { border-color: var(--color-owl); }
}

@keyframes flash {
    0% { opacity: 1; }
    50% { opacity: 0.4; }
    100% { opacity: 1; }
}

/* TTS Toast Notification */
.tts-toast {
    position: fixed;
    top: 25px;
    left: 50%;
    transform: translateX(-50%) translateY(-100px);
    background: linear-gradient(135deg, var(--color-owl) 0%, #3a86c8 100%);
    color: white;
    padding: 14px 28px;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1rem;
    z-index: 9999;
    box-shadow: 0 10px 30px rgba(131, 56, 236, 0.4);
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275), opacity 0.3s;
    pointer-events: none;
    opacity: 0;
    display: flex;
    align-items: center;
    gap: 10px;
    border: 2px solid rgba(255, 255, 255, 0.2);
}
.tts-toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}