/* EngMate - Main CSS File */
:root {
    --primary: #4e73fa;
    --primary-light: #7c98ff;
    --primary-dark: #2852f5;
    --secondary: #ff6b6b;
    --success: #5cb85c;
    --info: #5bc0de;
    --warning: #f0ad4e;
    --danger: #d9534f;
    --light: #f8f9fa;
    --dark: #343a40;
    --primary-soft: #e9efff;
    --yellow: #ffd166;
    --purple: #6f42c1;
    --teal: #20c997;
    --orange: #fd7e14;
    --pink: #e83e8c;
    --green: #28a745;
}

body {
    font-family: 'Nunito', sans-serif;
    background-color: #f9fafe;
    color: #4a4a4a;
}

.brand-text {
    font-family: 'Quicksand', sans-serif;
    font-weight: 700;
    font-size: 1.6rem;
    color: var(--primary);
    letter-spacing: -0.5px;
}

/* Background colors */
.bg-primary-soft {
    background-color: var(--primary-soft);
}

.bg-yellow-soft {
    background-color: #fff8e6;
}

.bg-teal-soft {
    background-color: #e6fff9;
}

/* Navigation */
.navbar {
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    padding: 0.8rem 1rem;
}

.navbar .nav-link {
    font-weight: 600;
    padding: 0.5rem 1rem;
    margin: 0 0.25rem;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.navbar .nav-link:hover {
    background-color: rgba(78, 115, 250, 0.1);
    transform: translateY(-2px);
}

.navbar .nav-link i {
    margin-right: 5px;
}

/* Active nav link */
.navbar-nav .nav-link.active {
    background-color: rgba(78, 115, 250, 0.15);
    color: var(--primary);
    font-weight: 700;
}

/* Buttons */
.btn {
    border-radius: 10px;
    padding: 0.5rem 1.5rem;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

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

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

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

.btn-outline-primary:hover {
    background-color: var(--primary);
    color: white;
}

/* Cards */
.card {
    border-radius: 15px;
    border: none;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    overflow: hidden;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.card-title {
    font-weight: 700;
    font-family: 'Quicksand', sans-serif;
}

.card-img-top {
    height: 180px;
    object-fit: cover;
}

/* Topic card */
.topic-card {
    border-radius: 15px;
    padding: 1.5rem;
    transition: box-shadow 0.3s ease;
    height: 100%;
    opacity: 1;
    transform: translateY(0);
}

.topic-card.animals {
    background-color: #e6f6ff;
}

.topic-card.food {
    background-color: #fff0e6;
}

.topic-card.sports {
    background-color: #e6ffe6;
}

.topic-card.family {
    background-color: #f9e6ff;
}

.topic-card.school {
    background-color: #fffde6;
}

.topic-card:hover {
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
    transform: none;
}

.topic-card .topic-icon {
    width: 80px;
    height: 80px;
    margin-bottom: 1rem;
}

.topic-card h3 {
    font-family: 'Quicksand', sans-serif;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

/* Hero section */
.hero-section {
    background: linear-gradient(135deg, #7c98ff 0%, #4e73fa 100%);
    padding: 5rem 0;
    color: white;
    border-radius: 0 0 50px 50px;
    margin-bottom: 3rem;
}

.hero-section h1 {
    font-family: 'Quicksand', sans-serif;
    font-weight: 700;
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.hero-section p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.hero-image {
    max-width: 100%;
    animation: none;
}

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

/* Vocabulary card */
.vocabulary-card {
    border-radius: 15px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    background-color: white;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: box-shadow 0.3s ease;
    opacity: 1;
    transform: translateY(0);
}

.vocabulary-card:hover {
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
    transform: none;
}

.vocabulary-card .word {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.vocabulary-card .meaning {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: #666;
}

.vocabulary-card .part-of-speech {
    display: inline-block;
    font-size: 0.85rem;
    padding: 0.2rem 0.8rem;
    border-radius: 20px;
    background-color: var(--primary-soft);
    color: var(--primary);
    margin-bottom: 1rem;
}

.vocabulary-card .example {
    font-style: italic;
    color: #777;
    margin-bottom: 1rem;
}

.vocabulary-card .audio-btn {
    background-color: var(--primary-soft);
    color: var(--primary);
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.vocabulary-card .audio-btn:hover {
    background-color: var(--primary);
    color: white;
    transform: scale(1.1);
}

/* Vocabulary Card Styles */
.vocabulary-card {
    background-color: #ffffff;
    border-radius: 8px;
    padding: 1.5rem;
    transition: box-shadow 0.3s ease;
    height: 100%;
    opacity: 1;
    transform: translateY(0);
}

.vocabulary-card:hover {
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
    transform: none;
}

.vocabulary-card .word {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.vocabulary-card .meaning {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: #666;
}

.vocabulary-card .part-of-speech {
    display: inline-block;
    font-size: 0.85rem;
    padding: 0.2rem 0.8rem;
    border-radius: 20px;
    background-color: var(--primary-soft);
    color: var(--primary);
    margin-bottom: 1rem;
}

.vocabulary-card .example {
    font-style: italic;
    color: #777;
    margin-bottom: 1rem;
}

.vocabulary-card .audio-btn {
    background-color: var(--primary-soft);
    color: var(--primary);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s;
}

.vocabulary-card .audio-btn:hover {
    background-color: var(--primary);
    color: white;
}

.level-badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    font-weight: bold;
    border-radius: 4px;
    background-color: #e3f2fd;
    color: #0d6efd;
}

.level-badge.level-A1 {
    background-color: #d1ecf1;
    color: #0c5460;
}

.level-badge.level-A2 {
    background-color: #d4edda;
    color: #155724;
}

.level-badge.level-B1 {
    background-color: #fff3cd;
    color: #856404;
}

.level-badge.level-B2 {
    background-color: #f8d7da;
    color: #721c24;
}

/* Footer styles */
footer {
    position: relative;
    background-color: var(--primary-soft);
    color: #4a4a4a;
    font-size: 0.9rem;
    margin-top: auto; /* Đảm bảo footer luôn nằm cuối trang */
}

footer h5 {
    font-family: 'Quicksand', sans-serif;
    font-weight: 700;
    color: var(--primary);
    font-size: 1rem;
}

footer a {
    color: #4a4a4a;
    transition: all 0.3s ease;
}

footer a:hover {
    color: var(--primary);
    text-decoration: none;
}

.social-icons a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: white;
    color: var(--primary);
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.social-icons a:hover {
    background-color: var(--primary);
    color: white;
    transform: translateY(-3px);
}

/* Social icons large */
.social-icons-large a {
    width: 50px;
    height: 50px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: 1.25rem;
    transition: all 0.3s ease;
}

.social-icons-large a:hover {
    transform: translateY(-3px);
    background-color: var(--primary);
    color: white;
    border-color: var(--primary);
}

/* Footer styles override */
.footer {
  position: relative !important; /* Ghi đè position absolute */
  bottom: auto !important; /* Xóa bỏ thuộc tính bottom */
  margin-top: 2rem; /* Thêm khoảng cách với nội dung */
  padding: 1.5rem 0;
  background-color: var(--primary-soft);
  color: #4a4a4a;
}

/* Animations */
.fade-in, .fade-in-left, .fade-in-right {
    animation: none !important;
    opacity: 1 !important;
    transform: translateY(0) translateX(0) !important;
}

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

@keyframes fadeInLeft {
    from { opacity: 0; transform: translateX(-50px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes fadeInRight {
    from { opacity: 0; transform: translateX(50px); }
    to { opacity: 1; transform: translateX(0); }
}

/* Progress bar */
.progress {
    height: 10px;
    border-radius: 5px;
    background-color: #e9ecef;
    margin-bottom: 0.5rem;
}

.progress-bar {
    background-color: var(--primary);
    border-radius: 5px;
}

/* Badge */
.badge {
    padding: 0.4rem 0.8rem;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.75rem;
}

.badge-primary {
    background-color: var(--primary-soft);
    color: var(--primary);
}

.badge-warning {
    background-color: #fff8e6;
    color: var(--warning);
}

.badge-success {
    background-color: #e6fff2;
    color: var(--success);
}

/* Level badge */
.level-badge {
    display: inline-block;
    padding: 0.25rem 0.8rem;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.85rem;
    margin-right: 0.5rem;
}

.level-A1 {
    background-color: #e6fff2;
    color: var(--success);
}

.level-A2 {
    background-color: #e6f9ff;
    color: var(--info);
}

.level-B1 {
    background-color: #e6eeff;
    color: var(--primary);
}

.level-B2 {
    background-color: #f2e6ff;
    color: var(--purple);
}

.level-C1 {
    background-color: #ffe6f6;
    color: var(--pink);
}

.level-C2 {
    background-color: #ffe6e6;
    color: var(--danger);
}

/* Quiz styles */
.quiz-option {
    display: block;
    border: 2px solid #e9ecef;
    border-radius: 10px;
    padding: 1rem;
    margin-bottom: 1rem;
    transition: all 0.3s ease;
    cursor: pointer;
}

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

.quiz-option.selected {
    border-color: var(--primary);
    background-color: var(--primary-soft);
}

.quiz-option.correct {
    border-color: var(--success);
    background-color: #e6fff2;
}

.quiz-option.incorrect {
    border-color: var(--danger);
    background-color: #ffe6e6;
}

/* Test styles */
.test-card {
    border-radius: 15px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    background-color: white;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.test-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.test-card .test-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.test-timer {
    position: fixed;
    top: 80px;
    right: 20px;
    background-color: var(--primary);
    color: white;
    padding: 10px 15px;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.test-timer i {
    margin-right: 10px;
}

.test-progress {
    height: 10px;
    border-radius: 5px;
    background-color: #e9ecef;
    margin-bottom: 0.5rem;
}

.test-progress-bar {
    height: 100%;
    border-radius: 5px;
    background-color: var(--primary);
}

.test-question {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.test-option {
    display: block;
    border: 2px solid #e9ecef;
    border-radius: 10px;
    padding: 1rem;
    margin-bottom: 1rem;
    transition: all 0.3s ease;
    cursor: pointer;
}

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

.test-option.selected {
    border-color: var(--primary);
    background-color: var(--primary-soft);
}

.test-result-card {
    text-align: center;
    padding: 2rem;
    border-radius: 15px;
    background-color: white;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.test-score {
    font-size: 4rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1;
}

.test-feedback {
    font-size: 1.5rem;
    font-weight: 600;
    margin-top: 1rem;
}

.test-feedback.excellent {
    color: var(--success);
}

.test-feedback.good {
    color: var(--info);
}

.test-feedback.average {
    color: var(--warning);
}

.test-feedback.poor {
    color: var(--danger);
}

/* Badge styles for test level */
.level-badge.level-A1A2 {
    background-color: linear-gradient(90deg, #e6fff2, #e6f9ff);
    color: var(--success);
}

/* Notification */
.notification {
    position: fixed;
    top: 20px;
    right: -300px;
    width: 300px;
    padding: 15px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    z-index: 1050;
    transition: all 0.5s ease;
}

.notification-success {
    background-color: #e6fff2;
    color: var(--success);
    border-left: 5px solid var(--success);
}

.notification-error {
    background-color: #ffe6e6;
    color: var(--danger);
    border-left: 5px solid var(--danger);
}

.notification-warning {
    background-color: #fff8e6;
    color: var(--warning);
    border-left: 5px solid var(--warning);
}

.notification-info {
    background-color: #e6f9ff;
    color: var(--info);
    border-left: 5px solid var(--info);
}

/* Auth styles */
.divider-text {
    position: relative;
    text-align: center;
    color: #6c757d;
    padding: 10px 0;
}

.divider-text::before,
.divider-text::after {
    content: "";
    position: absolute;
    top: 50%;
    width: 40%;
    height: 1px;
    background-color: #dee2e6;
}

.divider-text::before {
    left: 0;
}

.divider-text::after {
    right: 0;
}

.form-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 0.2rem rgba(78, 115, 250, 0.25);
}

.auth-card {
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}