/* Nhập font từ Google Fonts để sử dụng cho giao diện */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600;700&family=Merriweather:wght@400;700&display=swap');

/* Định nghĩa các biến CSS để tái sử dụng màu sắc và hiệu ứng */
:root {
    --primary-color: #007bff;
    --secondary-color: #28a745;
    --accent-color: #ffc107;
    --text-color: #403435;
    --light-text-color: #6c757d;
    --bg-light: #f8f9fa;
    --bg-dark: #343a40;
    --white: #ffffff;
    --gradient-primary: linear-gradient(135deg, #007bff 0%, #0056b3 100%);
    --gradient-secondary: linear-gradient(135deg, #007bff 0%, #71d388 100%);
    --shadow-light: 0 4px 15px rgba(0, 0, 0, 0.08);
    --shadow-medium: 0 8px 25px rgba(0, 0, 0, 0.15);
    --shadow-heavy: 0 15px 35px rgba(0, 0, 0, 0.2);
}

/* Reset mặc định để đảm bảo giao diện nhất quán */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--white);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

a {
    text-decoration: none;
    color: var(--primary-color);
    transition: color 0.3s ease;
}

a:hover {
    color: var(--secondary-color);
}

h1,
h2,
h3,
h4 {
    font-family: 'Merriweather', serif;
    margin-bottom: 1rem;
    color: var(--text-color);
}

h1 {
    font-size: 3.5rem;
    line-height: 1.2;
}

h2 {
    font-size: 2.8rem;
    margin-bottom: 2rem;
}

h3 {
    font-size: 1.8rem;
}

p {
    margin-bottom: 1rem;
}

.section-padding {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 1.5rem;
    position: relative;
    padding-bottom: 10px;
}

.section-title::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 0;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--primary-color);
    border-radius: 2px;
}

.section-description {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 3rem auto;
    font-size: 1.1rem;
    color: var(--light-text-color);
}

.text-white {
    color: var(--white) !important;
}

.bg-light {
    background-color: var(--bg-light);
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-block;
    padding: 14px 30px;
    border-radius: 50px;
    font-weight: 600;
    text-align: center;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(45deg, rgb(34, 88, 206), rgb(147, 51, 234));
    color: var(--white);
    box-shadow: var(--shadow-light);
}

.btn-primary:hover {
    transform: translateY(-3px);
    color: var(--white);
    box-shadow: var(--shadow-medium);
    background: linear-gradient(45deg, rgb(13, 79, 201), rgb(88, 28, 135));
}

.btn-secondary {
    background: var(--primary-color);
    color: var(--white);
    border: 2px solid var(--primary-color);
    box-shadow: var(--shadow-light);
}

.btn-secondary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-medium);
    background: #0056b3;
    color: var(--white);
    border-color: #0056b3;
}

.btn-nav {
    padding: 8px 20px;
    font-size: 0.9rem;
    border-radius: 25px;
    background: linear-gradient(45deg, rgb(34, 88, 206), rgb(147, 51, 234));
    color: var(--white);
    box-shadow: none;
}

.btn-nav:hover {
    background: linear-gradient(45deg, rgb(13, 79, 201), rgb(88, 28, 135));
    color: var(--white);
    transform: none;
}

/* ===== HEADER STYLES ===== */
.main-header {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    padding: 15px 0;
    z-index: 1000;
    transition: all 0.3s ease;
    background-color: transparent;
}

.main-header.scrolled {
    position: fixed;
    background-color: var(--white);
    box-shadow: var(--shadow-light);
}

.main-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.main-header .logo a {
    font-family: 'Merriweather', serif;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--white);
    transition: color 0.3s ease;
}

.main-header.scrolled .logo a {
    color: var(--primary-color);
}

.main-nav ul {
    list-style: none;
    display: flex;
    gap: 30px;
}

.main-nav a {
    color: var(--white);
    font-weight: 600;
    position: relative;
    transition: color 0.3s ease;
}

.main-header.scrolled .main-nav a {
    color: var(--text-color);
}

.main-nav a:not(.btn-nav)::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    background-color: var(--white);
    left: 0;
    bottom: -5px;
    transition: all 0.3s ease;
}

.main-header.scrolled .main-nav a:not(.btn-nav)::after {
    background-color: var(--primary-color);
}

.main-nav a:not(.btn-nav):hover::after {
    width: 100%;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 20px;
    padding: 0;
}

.menu-toggle span {
    display: block;
    width: 100%;
    height: 3px;
    background-color: var(--white);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.main-header.scrolled .menu-toggle span {
    background-color: var(--text-color);
}

.menu-toggle.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* ===== HERO SECTION VỚI SLIDESHOW ===== */
.hero-section {
    position: relative;
    height: 100vh;
    min-height: 600px;
    overflow: hidden;
}

.hero-swiper {
    width: 100%;
    height: 100%;
}

.hero-slide {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: flex-start;
}

/* Video slide */
.video-slide .hero-video-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
}

.hero-video {
    position: absolute;
    top: 50%;
    left: 50%;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    transform: translate(-50%, -50%);
    object-fit: cover;
}

.hero-video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 123, 255, 0.7) 0%, rgba(0, 86, 179, 0.8) 100%);
    z-index: -1;
}

/* Image slides */
.image-slide {
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.hero-image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 123, 255, 0.6) 0%, rgba(0, 86, 179, 0.7) 100%);
    z-index: 1;
}

/* Hero content */
.hero-content-wrapper {
    position: relative;
    z-index: 2;
    height: 100%;
    display: flex;
    align-items: center;
    width: 100%;
}

.hero-content {
    color: var(--white);
    max-width: 600px;
    padding: 0 20px;
}

.hero-content-left {
    margin-left: -50px;
    text-align: left;
}

.hero-content h1 {
    color: var(--white);
    margin-bottom: 1.5rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    font-size: 3.2rem;
    line-height: 1.2;
}

.hero-content .subtitle {
    font-size: 1.3rem;
    margin-bottom: 2.5rem;
    opacity: 0.95;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
    line-height: 1.4;
}

/* Sound toggle button */
.sound-toggle {
    position: absolute;
    top: 100px;
    right: 30px;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: var(--white);
    font-size: 1.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 1;
}

.sound-toggle:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.5);
    transform: scale(1.1);
}

.sound-toggle:active {
    transform: scale(0.95);
}

.sound-toggle.unmuted {
    background: rgba(40, 167, 69, 0.8);
    border-color: rgba(40, 167, 69, 1);
}

.image-slide .sound-toggle {
    display: none !important;
}

/* Swiper pagination */
.swiper-pagination {
    bottom: 30px !important;
    text-align: center;
}

.swiper-pagination-bullet {
    width: 12px;
    height: 12px;
    background: rgba(255, 255, 255, 0.5);
    opacity: 1;
    margin: 0 8px;
    transition: all 0.3s ease;
}

.swiper-pagination-bullet-active {
    background: var(--white);
    transform: scale(1.2);
}

/* ===== VỀ CHÚNG TÔI ===== */
.about-us-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 30px;
    align-items: center;
    margin-top: 2rem;
}

.about-us-text {
    grid-column: span 7;
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--light-text-color);
}

.about-us-text h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.about-us-image {
    grid-column: span 5;
    text-align: center;
}

.about-us-image img {
    max-width: 100%;
    height: auto;
    border-radius: 15px;
    box-shadow: var(--shadow-medium);
}

/* ===== Ý NGHĨA CHIẾN DỊCH ===== */
.meaning-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 2rem;
}

.meaning-card {
    background-color: var(--white);
    padding: 30px;
    border-radius: 15px;
    box-shadow: var(--shadow-light);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.meaning-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-medium);
}

.meaning-card i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.meaning-card h3 {
    color: var(--primary-color);
    margin-bottom: 10px;
}

.meaning-card p {
    font-size: 0.95rem;
    color: var(--light-text-color);
}

/* ===== MỤC TIÊU ===== */
.goals-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
}

.goal-item {
    background-color: var(--white);
    padding: 25px;
    border-radius: 10px;
    box-shadow: var(--shadow-light);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border-left: 5px solid var(--primary-color);
}

.goal-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
}

.goal-item h4 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-size: 1.25rem;
}

.goal-item p {
    font-size: 0.9rem;
    color: var(--light-text-color);
}

/* ===== CÁCH THAM GIA ===== */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.step-card {
    background-color: var(--white);
    padding: 30px;
    border-radius: 15px;
    box-shadow: var(--shadow-light);
    text-align: center;
    position: relative;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.step-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-medium);
}

.step-number {
    position: absolute;
    top: 15px;
    left: 15px;
    background: var(--primary-color);
    color: var(--white);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.2rem;
    font-weight: 700;
    box-shadow: var(--shadow-light);
}

.step-card h3 {
    margin-top: 20px;
    color: var(--primary-color);
}

.step-card p {
    color: var(--light-text-color);
    font-size: 0.95rem;
}

.content-types {
    list-style: none;
    text-align: left;
    margin-top: 15px;
    padding-left: 0;
}

.content-types li {
    margin-bottom: 8px;
    color: var(--text-color);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
}

.content-types li i {
    margin-right: 10px;
    color: var(--secondary-color);
    font-size: 1.1rem;
}

/* Icon placeholders */
.icon-location::before {
    content: '📍';
}

.icon-food::before {
    content: '🍜';
}

.icon-culture::before {
    content: '🎭';
}

.icon-people::before {
    content: '👨‍👩‍👧‍👦';
}

.icon-heart::before {
    content: '❤️';
}

/* ===== PARALLAX QUOTE SECTION ===== */
.parallax-quote-section {
    position: relative;
    min-height: 400px;
    background-image: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), 
                      url('https://images.pexels.com/photos/2166711/pexels-photo-2166711.jpeg?auto=compress&cs=tinysrgb&w=1920&h=600&fit=crop');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--white);
    overflow: hidden;
}

.parallax-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 123, 255, 0.4) 0%, rgba(0, 86, 179, 0.6) 100%);
    z-index: 1;
}

.parallax-quote-section .container {
    position: relative;
    z-index: 2;
}

.quote-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 60px 20px;
}

.quote-text {
    font-family: 'Merriweather', serif;
    font-size: 2.2rem;
    line-height: 1.4;
    margin-bottom: 2rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    font-style: italic;
    color: var(--white);
}

.quote-author {
    font-size: 1.3rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.9);
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
    font-style: italic;
}

/* ===== BÀI DỰ THI ===== */
.submission-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 2rem;
}

.submission-card {
    background-color: var(--white);
    border-radius: 15px;
    box-shadow: var(--shadow-light);
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    display: flex;
    flex-direction: column;
    position: relative;
}

.submission-card:hover {
    transform: translateY(-15px) scale(1.02);
    box-shadow: var(--shadow-heavy);
}

.card-image-wrapper {
    position: relative;
    overflow: hidden;
    height: 200px;
}

.submission-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.submission-card:hover img {
    transform: scale(1.1);
}

.card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 123, 255, 0.8) 0%, rgba(0, 86, 179, 0.9) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.3s ease;
}

.submission-card:hover .card-overlay {
    opacity: 1;
}

.card-overlay-content {
    color: var(--white);
    text-align: center;
    transform: translateY(20px);
    transition: transform 0.3s ease;
}

.submission-card:hover .card-overlay-content {
    transform: translateY(0);
}

.card-overlay-content i {
    font-size: 2.5rem;
    margin-bottom: 10px;
    display: block;
}

.card-overlay-content span {
    font-size: 1.1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.submission-card .card-content {
    padding: 25px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    position: relative;
}

.submission-card .card-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 25px;
    right: 25px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.submission-card:hover .card-content::before {
    transform: scaleX(1);
}

.submission-card h3 {
    font-size: 1.4rem;
    color: var(--primary-color);
    margin-bottom: 15px;
    transition: color 0.3s ease;
}

.submission-card:hover h3 {
    color: var(--secondary-color);
}

.submission-card .description {
    font-size: 0.95rem;
    color: var(--light-text-color);
    margin-bottom: 20px;
    flex-grow: 1;
    line-height: 1.6;
}

.submission-card .author {
    font-size: 0.85rem;
    color: var(--text-color);
    font-weight: 600;
    margin-top: auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 15px;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.submission-card .author .author-info {
    display: flex;
    align-items: center;
    gap: 5px;
}

.submission-card .author .author-info i {
    color: var(--primary-color);
    font-size: 0.9rem;
}

/* ===== CẢM XÚC CỘNG ĐỒNG ===== */
.emotions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-top: 2rem;
}

.emotion-card {
    background-color: var(--white);
    border-radius: 20px;
    box-shadow: var(--shadow-light);
    overflow: hidden;
    transition: all 0.4s ease;
    position: relative;
}

.emotion-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-heavy);
}

.emotion-content {
    padding: 30px;
    position: relative;
}

.quote-icon {
    position: absolute;
    top: 20px;
    left: 20px;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.2rem;
    box-shadow: var(--shadow-light);
}

.emotion-text {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-color);
    margin: 50px 0 25px 0;
    font-style: italic;
    position: relative;
}

.emotion-author {
    display: flex;
    align-items: center;
    gap: 15px;
    padding-top: 20px;
    border-top: 1px solid var(--bg-light);
}

.author-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.5rem;
    box-shadow: var(--shadow-light);
    flex-shrink: 0;
}

.author-info h4 {
    font-size: 1.1rem;
    color: var(--primary-color);
    margin-bottom: 5px;
    font-family: 'Inter', sans-serif;
}

.author-info p {
    font-size: 0.9rem;
    color: var(--light-text-color);
    margin-bottom: 8px;
}

.emotion-rating {
    display: flex;
    gap: 2px;
}

.emotion-rating i {
    color: var(--accent-color);
    font-size: 0.9rem;
}

/* Community Stats */
.community-stats {
    margin-top: 60px;
    padding: 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 20px;
    box-shadow: var(--shadow-medium);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    text-align: center;
}

.stat-item {
    color: var(--white);
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    font-family: 'Merriweather', serif;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.stat-label {
    font-size: 1.1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    opacity: 0.9;
}

/* ===== CTA SECTION ===== */
.cta-section {
    background: var(--gradient-secondary);
    color: var(--white);
    text-align: center;
    padding: 100px 0;
}

.cta-section .section-title {
    color: var(--white);
}

.cta-section .section-title::after {
    background: var(--white);
}

.cta-section .section-description {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 3rem;
}

/* Registration form */
.registration-form {
    max-width: 600px;
    margin: 0 auto;
    background-color: rgba(255, 255, 255, 0.1);
    padding: 40px;
    border-radius: 15px;
    box-shadow: var(--shadow-medium);
    text-align: left;
}

.registration-form .form-group {
    margin-bottom: 20px;
}

.registration-form label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--white);
    font-size: 1.1rem;
}

.registration-form input[type="text"],
.registration-form input[type="email"],
.registration-form input[type="url"],
.registration-form input[type="file"] {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 8px;
    background-color: rgba(255, 255, 255, 0.95);
    color: var(--text-color);
    font-size: 1rem;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.registration-form input[type="text"]::placeholder,
.registration-form input[type="email"]::placeholder,
.registration-form input[type="url"]::placeholder {
    color: var(--light-text-color);
    opacity: 0.8;
}

.registration-form input[type="text"]:focus,
.registration-form input[type="email"]:focus,
.registration-form input[type="url"]:focus,
.registration-form input[type="file"]:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(255, 193, 7, 0.3);
}

.registration-form input[type="file"] {
    padding: 10px 15px;
    background-color: rgba(255, 255, 255, 0.95);
    cursor: pointer;
}

.registration-form input[type="file"]::-webkit-file-upload-button {
    visibility: hidden;
}

.registration-form input[type="file"]::before {
    content: 'Chọn tệp...';
    display: inline-block;
    background: var(--primary-color);
    color: var(--white);
    border: 1px solid var(--primary-color);
    border-radius: 5px;
    padding: 8px 12px;
    outline: none;
    white-space: nowrap;
    -webkit-user-select: none;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.9rem;
    margin-right: 10px;
    transition: background-color 0.3s ease;
}

.registration-form input[type="file"]:hover::before {
    background: #0056b3;
}

.registration-form input[type="file"]:active::before {
    background: #003f80;
}

.registration-form .form-hint {
    display: block;
    margin-top: 5px;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.7);
}

.registration-form .btn-secondary {
    width: auto;
    margin-top: 10px;
    display: block;
    margin-left: auto;
    margin-right: auto;
}

/* ===== FOOTER ===== */
.main-footer {
    background-color: var(--bg-dark);
    color: var(--white);
    padding: 60px 0 0 0;
    font-size: 0.9rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1.5fr 1fr;
    gap: 40px;
    text-align: left;
    align-items: start;
    margin-bottom: 40px;
}

.footer-info .logo {
    margin-bottom: 15px;
}

.footer-info .logo a {
    font-family: 'Merriweather', serif;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--white);
    transition: color 0.3s ease;
}

.footer-info .logo a:hover {
    color: var(--accent-color);
}

.footer-tagline {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
    font-size: 1rem;
    margin-bottom: 0;
}

.main-footer h3 {
    color: var(--white);
    font-size: 1.2rem;
    margin-bottom: 20px;
    font-family: 'Inter', sans-serif;
    font-weight: 600;
}

.footer-links ul {
    list-style: none;
    padding: 0;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    transition: color 0.3s ease;
    font-size: 1rem;
}

.footer-links a:hover {
    color: var(--accent-color);
}

/* Thông tin liên hệ */
.contact-info {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.95rem;
    line-height: 1.5;
}

.contact-item i {
    color: var(--accent-color);
    font-size: 1.1rem;
    margin-top: 2px;
    min-width: 16px;
}

/* Mạng xã hội và CTA */
.footer-social-cta {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.social-links {
    margin-bottom: 25px;
    display: flex;
    gap: 15px;
}

.social-links a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 1.8rem;
    transition: all 0.3s ease;
}

.social-links a:hover {
    color: var(--accent-color);
    transform: translateY(-2px);
}

.footer-cta-btn {
    background: linear-gradient(45deg, rgb(34, 88, 206), rgb(147, 51, 234));
    color: var(--white);
    border: none;
    padding: 12px 25px;
    font-size: 0.95rem;
    border-radius: 25px;
    box-shadow: none;
    font-weight: 600;
    display: inline-block;
    transition: all 0.3s ease;
}

.footer-cta-btn:hover {
    background: linear-gradient(45deg, rgb(13, 79, 201), rgb(88, 28, 135));
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

/* Footer bottom */
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 25px 0;
    text-align: center;
}

.footer-divider {
    margin-bottom: 20px;
}

.copyright {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
    margin: 0;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
    .section-padding {
        padding: 60px 0;
    }

    .hero-content h1 {
        font-size: 2.2rem;
    }

    .hero-content .subtitle {
        font-size: 1.1rem;
    }

    .hero-content-left {
        margin-left: 0;
        text-align: center;
    }

    .sound-toggle {
        width: 50px;
        height: 50px;
        top: 80px;
        right: 20px;
        font-size: 1.2rem;
    }

    h2 {
        font-size: 1.8rem;
    }

    .meaning-card,
    .goal-item,
    .step-card {
        padding: 20px;
    }

    .step-number {
        width: 35px;
        height: 35px;
        font-size: 1rem;
    }

    .about-us-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .about-us-text {
        grid-column: span 1;
    }

    .about-us-image {
        grid-column: span 1;
    }

    /* Parallax Quote Section Mobile */
    .parallax-quote-section {
        background-attachment: scroll;
        min-height: 300px;
    }

    .quote-text {
        font-size: 1.6rem;
        line-height: 1.3;
    }

    .quote-author {
        font-size: 1.1rem;
    }

    /* Emotions Grid Mobile */
    .emotions-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .emotion-content {
        padding: 25px;
    }

    .emotion-text {
        margin: 40px 0 20px 0;
        font-size: 0.95rem;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .stat-number {
        font-size: 2.2rem;
    }

    .stat-label {
        font-size: 1rem;
    }

    /* Mobile Navigation */
    .menu-toggle {
        display: flex;
    }

    .main-nav {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background-color: var(--white);
        transition: left 0.3s ease;
        z-index: 999;
        box-shadow: var(--shadow-medium);
    }

    .main-nav.active {
        left: 0;
    }

    .main-nav ul {
        flex-direction: column;
        padding: 40px 20px;
        gap: 20px;
        height: 100%;
    }

    .main-nav li {
        width: 100%;
    }

    .main-nav a {
        display: block;
        padding: 15px 0;
        font-size: 1.1rem;
        border-bottom: 1px solid var(--bg-light);
        color: var(--text-color) !important;
    }

    .main-nav a:not(.btn-nav)::after {
        display: none;
    }

    .btn-nav {
        margin-top: 20px;
        text-align: center;
        padding: 12px 30px;
    }

    /* Footer mobile */
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
        text-align: center;
    }

    .footer-social-cta {
        align-items: center;
    }

    .contact-info {
        align-items: center;
    }

    .contact-item {
        justify-content: center;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .main-header .container {
        flex-wrap: wrap;
        justify-content: center;
    }

    .logo {
        margin-bottom: 15px;
    }

    .menu-toggle {
        position: absolute;
        right: 20px;
        top: 25px;
    }

    .hero-content h1 {
        font-size: 1.8rem;
    }

    .hero-content .subtitle {
        font-size: 1rem;
    }

    .sound-toggle {
        width: 45px;
        height: 45px;
        top: 75px;
        right: 15px;
        font-size: 1rem;
    }

    .swiper-pagination {
        bottom: 20px !important;
    }

    .swiper-pagination-bullet {
        width: 10px;
        height: 10px;
        margin: 0 6px;
    }

    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }

    .section-description {
        font-size: 1rem;
    }

    .quote-text {
        font-size: 1.3rem;
        padding: 40px 15px;
    }

    .quote-author {
        font-size: 1rem;
    }

    .emotions-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .emotion-content {
        padding: 20px;
    }

    .emotion-text {
        font-size: 0.9rem;
        margin: 35px 0 15px 0;
    }

    .author-avatar {
        width: 50px;
        height: 50px;
    }

    .author-info h4 {
        font-size: 1rem;
    }

    .author-info p {
        font-size: 0.85rem;
    }

    .stats-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .stat-number {
        font-size: 2rem;
    }

    .stat-label {
        font-size: 0.9rem;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }

    .footer-tagline {
        font-size: 0.9rem;
    }

    .contact-item {
        font-size: 0.9rem;
    }
}