/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: linear-gradient(135deg, #ff6b6b, #ff8e8e);
    --secondary: linear-gradient(135deg, #4ecdc4, #6de4db);
    --accent: linear-gradient(135deg, #ffe66d, #ffed4e);
    --purple: linear-gradient(135deg, #a8e6cf, #88d8c0);
    --blue: linear-gradient(135deg, #74b9ff, #0984e3);
    --pink: linear-gradient(135deg, #fd79a8, #e84393);
    --orange: linear-gradient(135deg, #fdcb6e, #e17055);
    --green: linear-gradient(135deg, #00cec9, #55a3ff);

    --bg-primary: #fafafa;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;

    --text-primary: #2d3436;
    --text-secondary: #636e72;
    --text-light: #b2bec3;

    --shadow-soft: 0 4px 20px rgba(0,0,0,0.1);
    --shadow-medium: 0 8px 25px rgba(0,0,0,0.15);
    --shadow-heavy: 0 15px 35px rgba(0,0,0,0.2);

    --border-radius: 20px;
    --border-radius-small: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    margin-left: 80px;
    transition: margin-left 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body.sidebar-expanded {
    margin-left: 250px;
}

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

/* Sidebar Navigation */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    height: 100vh;
    width: 80px;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    border-right: 1px solid rgba(0, 0, 0, 0.05);
    z-index: 1000;
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px 0;
    box-shadow: 2px 0 20px rgba(0, 0, 0, 0.05);
}

.sidebar.expanded {
    width: 250px;
}

.sidebar-logo {
    margin-bottom: 40px;
    text-align: center;
}

.sidebar-logo .logo-text {
    font-family: 'Fredoka', cursive;
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--primary);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    opacity: 0;
    transition: opacity 0.3s;
}

.sidebar.expanded .sidebar-logo .logo-text {
    opacity: 1;
}

.sidebar-menu {
    list-style: none;
    width: 100%;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: 0 10px;
}

.sidebar-link {
    display: flex;
    align-items: center;
    padding: 15px;
    text-decoration: none;
    color: var(--text-secondary);
    border-radius: 15px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.sidebar-link:hover {
    background: linear-gradient(135deg, rgba(255, 107, 107, 0.1), rgba(255, 142, 142, 0.1));
    transform: translateX(5px);
}

.sidebar-link.active {
    background: var(--primary);
    color: white;
}

.sidebar-link.active .sidebar-icon,
.sidebar-link.active .sidebar-text {
    color: white;
}

.sidebar-icon {
    font-size: 1.5rem;
    min-width: 50px;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: transform 0.3s;
}

.sidebar-link:hover .sidebar-icon {
    transform: scale(1.2) rotate(5deg);
}

.sidebar-text {
    font-weight: 500;
    font-size: 0.95rem;
    opacity: 0;
    transition: opacity 0.3s;
    white-space: nowrap;
}

.sidebar.expanded .sidebar-text {
    opacity: 1;
}

/* Sidebar Toggle Button */
.sidebar-toggle {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 3px;
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(255, 107, 107, 0.3);
}

.sidebar-toggle:hover {
    transform: translateX(-50%) scale(1.1);
    box-shadow: 0 6px 20px rgba(255, 107, 107, 0.4);
}

.sidebar-toggle span {
    width: 18px;
    height: 2px;
    background: white;
    transition: all 0.3s;
    border-radius: 2px;
}

.sidebar.expanded .sidebar-toggle span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.sidebar.expanded .sidebar-toggle span:nth-child(2) {
    opacity: 0;
}

.sidebar.expanded .sidebar-toggle span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Tooltip for collapsed sidebar */
.sidebar:not(.expanded) .sidebar-link::after {
    content: attr(data-tooltip);
    position: absolute;
    left: 100%;
    top: 50%;
    transform: translateY(-50%);
    margin-left: 10px;
    background: var(--text-primary);
    color: white;
    padding: 5px 12px;
    border-radius: 8px;
    font-size: 0.85rem;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
    z-index: 1000;
}

.sidebar:not(.expanded) .sidebar-link:hover::after {
    opacity: 1;
}


/* Hero Section */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding: 50px 0;
    overflow: hidden;
}

.hero-bg-shapes {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.1;
    animation: float 6s ease-in-out infinite;
}

.shape-1 {
    width: 200px;
    height: 200px;
    background: var(--pink);
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.shape-2 {
    width: 150px;
    height: 150px;
    background: var(--blue);
    top: 60%;
    right: 10%;
    animation-delay: 2s;
}

.shape-3 {
    width: 100px;
    height: 100px;
    background: var(--accent);
    top: 20%;
    right: 30%;
    animation-delay: 4s;
}

.shape-4 {
    width: 120px;
    height: 120px;
    background: var(--green);
    bottom: 20%;
    left: 20%;
    animation-delay: 1s;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    z-index: 2;
    position: relative;
}

.hero-image-container {
    position: relative;
    display: flex;
    justify-content: center;
}

.profile-image {
    width: 350px;
    height: 350px;
    object-fit: cover;
    border-radius: 50%;
    border: 5px solid white;
    box-shadow: var(--shadow-heavy);
    transition: var(--transition);
    z-index: 2;
    position: relative;
}

.profile-image:hover {
    transform: scale(1.05) rotate(5deg);
}

.image-decoration {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 3;
}

.deco {
    position: absolute;
    font-size: 2rem;
    animation: sparkle 2s ease-in-out infinite;
}

.deco-1 {
    top: 10%;
    right: 10%;
    animation-delay: 0s;
}

.deco-2 {
    top: 20%;
    left: 5%;
    animation-delay: 0.5s;
}

.deco-3 {
    bottom: 15%;
    right: 15%;
    animation-delay: 1s;
}

.deco-4 {
    bottom: 10%;
    left: 10%;
    animation-delay: 1.5s;
}

@keyframes sparkle {
    0%, 100% { transform: scale(1) rotate(0deg); opacity: 0.7; }
    50% { transform: scale(1.2) rotate(180deg); opacity: 1; }
}

.hero-greeting {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-family: 'Fredoka', cursive;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1rem;
    font-family: 'Fredoka', cursive;
}

.name-highlight {
    background: var(--primary);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-tags {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.tag {
    padding: 8px 16px;
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 600;
    color: white;
    box-shadow: var(--shadow-soft);
    animation: bounce-in 0.6s ease-out forwards;
    opacity: 0;
}

.tag-math {
    background: var(--blue);
    animation-delay: 0.2s;
}

.tag-music {
    background: var(--pink);
    animation-delay: 0.4s;
}

.tag-age {
    background: var(--accent);
    animation-delay: 0.6s;
}

@keyframes bounce-in {
    0% { opacity: 0; transform: scale(0.3); }
    50% { transform: scale(1.05); }
    70% { transform: scale(0.9); }
    100% { opacity: 1; transform: scale(1); }
}

.hero-description {
    font-size: 1.2rem;
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.hero-stats {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--secondary);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-family: 'Fredoka', cursive;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

.btn {
    padding: 14px 28px;
    border: none;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    box-shadow: var(--shadow-soft);
    position: relative;
    overflow: hidden;
}

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

.btn-secondary {
    background: var(--secondary);
    color: white;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-medium);
}

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

.scroll-bounce {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: var(--text-secondary);
    font-weight: 500;
    animation: bounce 2s infinite;
    z-index: 2;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

/* Section Styles */
.section-title {
    font-family: 'Fredoka', cursive;
    font-size: 3rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.title-emoji {
    font-size: 2.5rem;
    animation: wiggle 2s ease-in-out infinite;
}

@keyframes wiggle {
    0%, 7% { transform: rotateZ(0); }
    15% { transform: rotateZ(-15deg); }
    20% { transform: rotateZ(10deg); }
    25% { transform: rotateZ(-10deg); }
    30% { transform: rotateZ(6deg); }
    35% { transform: rotateZ(-4deg); }
    40%, 100% { transform: rotateZ(0); }
}

/* About Section */
.about-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #ff9a9e 0%, #fecfef 50%, #fecfef 100%);
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.fun-fact {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 2rem;
    background: rgba(255, 255, 255, 0.2);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    transition: var(--transition);
}

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

.fact-emoji {
    font-size: 2rem;
    flex-shrink: 0;
}

.fun-fact p {
    font-size: 1.1rem;
    line-height: 1.6;
    color: var(--text-primary);
}

.about-cards {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.about-card {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow-soft);
    transition: var(--transition);
    border: 3px solid transparent;
    position: relative;
    overflow: hidden;
}

.about-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: var(--border-radius);
    padding: 3px;
    background: var(--primary);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask-composite: exclude;
    -webkit-mask-composite: xor;
}

.card-math::before { background: var(--blue); }
.card-music::before { background: var(--pink); }
.card-teacher::before { background: var(--green); }

.about-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: var(--shadow-heavy);
}

.card-emoji {
    font-size: 3rem;
    margin-bottom: 1rem;
    text-align: center;
}

.about-card h3 {
    font-family: 'Fredoka', cursive;
    font-size: 1.5rem;
    margin-bottom: 1rem;
    text-align: center;
    color: var(--text-primary);
}

.about-card ul {
    list-style: none;
    padding: 0;
}

.about-card li {
    padding: 0.5rem 0;
    color: var(--text-secondary);
    position: relative;
    padding-left: 1.5rem;
    font-weight: 500;
}

.about-card li::before {
    position: absolute;
    left: 0;
    font-size: 1rem;
}

.card-math li::before { content: '🔢'; }
.card-music li::before { content: '🎵'; }
.card-teacher li::before { content: '📖'; }

/* Achievements Section */
.achievements-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
    background-size: 400% 400%;
    animation: gradientShift 20s ease infinite;
}

.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.achievement-item {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-soft);
    transition: var(--transition);
    cursor: pointer;
}

.achievement-item.featured {
    grid-column: span 2;
    grid-row: span 2;
}

.achievement-item:hover {
    transform: translateY(-10px) rotate(2deg);
    box-shadow: var(--shadow-heavy);
}

.achievement-image {
    position: relative;
    height: 100%;
    min-height: 300px;
}

.achievement-item.featured .achievement-image {
    min-height: 500px;
}

.achievement-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.achievement-item:hover .achievement-image img {
    transform: scale(1.1);
}

.achievement-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0,0,0,0.8));
    color: white;
    padding: 2rem;
    transform: translateY(100%);
    transition: var(--transition);
}

.achievement-item:hover .achievement-overlay {
    transform: translateY(0);
}

.achievement-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.achievement-overlay h3 {
    font-family: 'Fredoka', cursive;
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: white;
}

.achievement-overlay p {
    font-size: 1rem;
    line-height: 1.5;
    margin-bottom: 1rem;
}

.achievement-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.achievement-tag {
    background: var(--secondary);
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

/* Performances Section */
.performances-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #fbc2eb 0%, #a6c1ee 100%);
    background-size: 400% 400%;
    animation: gradientShift 25s ease infinite;
}

.performances-intro {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 3rem;
    font-size: 1.2rem;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.2);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    backdrop-filter: blur(10px);
}

.performances-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.performance-card {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-soft);
    transition: var(--transition);
    cursor: pointer;
    position: relative;
}

.performance-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: var(--shadow-heavy);
}

.performance-image {
    position: relative;
    height: 250px;
    overflow: hidden;
}

.performance-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

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

.play-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.performance-card:hover .play-overlay {
    opacity: 1;
}

.play-icon {
    font-size: 4rem;
    margin-bottom: 0.5rem;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

.play-text {
    color: white;
    font-weight: 600;
    font-size: 1.1rem;
}

.performance-details {
    padding: 1.5rem;
}

.composer-emoji {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.performance-details h3 {
    font-family: 'Fredoka', cursive;
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.composer {
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
}

.description {
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.performance-stats {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.stat-item {
    background: var(--accent);
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

/* Dancing Section */
.dancing-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #ff9a9e 0%, #fecfef 50%, #fecfef 100%);
    background-size: 400% 400%;
    animation: gradientShift 30s ease infinite;
}

.dancing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.dance-card {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-soft);
    transition: var(--transition);
    cursor: pointer;
    aspect-ratio: 4/5;
}

.dance-card.featured {
    grid-column: span 2;
    aspect-ratio: 16/9;
}

.dance-card:hover {
    transform: translateY(-10px) rotate(-2deg);
    box-shadow: var(--shadow-heavy);
}

.dance-image {
    position: relative;
    width: 100%;
    height: 100%;
}

.dance-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

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

.dance-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(255, 107, 107, 0.9), rgba(78, 205, 196, 0.9));
    color: white;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    opacity: 0;
    transition: var(--transition);
    padding: 2rem;
}

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

.dance-emoji {
    font-size: 4rem;
    margin-bottom: 1rem;
    animation: bounce 2s infinite;
}

.dance-overlay h3 {
    font-family: 'Fredoka', cursive;
    font-size: 2rem;
    margin-bottom: 1rem;
}

.dance-overlay p {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    line-height: 1.4;
}

.play-button {
    background: white;
    color: var(--text-primary);
    padding: 12px 24px;
    border-radius: 30px;
    font-weight: 700;
    font-size: 1rem;
    box-shadow: var(--shadow-soft);
}

/* Art Section */
.art-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
    background-size: 400% 400%;
    animation: gradientShift 20s ease infinite;
}

.art-intro {
    text-align: center;
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    background: rgba(255, 255, 255, 0.2);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    backdrop-filter: blur(10px);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: 3rem;
}

.art-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.art-item {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    aspect-ratio: 3/4;
    box-shadow: var(--shadow-soft);
    transition: var(--transition);
    cursor: pointer;
}

.art-item:hover {
    transform: translateY(-10px) rotate(3deg);
    box-shadow: var(--shadow-heavy);
}

.art-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.art-item:hover img {
    transform: scale(1.1);
}

.art-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0,0,0,0.8));
    color: white;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    transform: translateY(100%);
    transition: var(--transition);
}

.art-item:hover .art-overlay {
    transform: translateY(0);
}

.art-emoji {
    font-size: 2rem;
}

.art-category {
    font-weight: 600;
    font-size: 1.1rem;
}

/* Tutoring Section */
.tutoring-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #fbc2eb 0%, #a6c1ee 100%);
    background-size: 400% 400%;
    animation: gradientShift 25s ease infinite;
}

.tutoring-intro {
    text-align: center;
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    background: rgba(255, 255, 255, 0.2);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    backdrop-filter: blur(10px);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: 4rem;
}

.tutoring-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 4rem;
}

.subjects-section h3,
.testimonials-section h3 {
    font-family: 'Fredoka', cursive;
    font-size: 2rem;
    text-align: center;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

.subjects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.subject-card {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    padding: 2rem;
    text-align: center;
    box-shadow: var(--shadow-soft);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.subject-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: conic-gradient(from 0deg, transparent, var(--primary), transparent);
    animation: rotate 4s linear infinite;
    z-index: 1;
}

.subject-card::after {
    content: '';
    position: absolute;
    inset: 3px;
    background: var(--bg-card);
    border-radius: var(--border-radius);
    z-index: 2;
}

.subject-card > * {
    position: relative;
    z-index: 3;
}

.math-card::before { background: conic-gradient(from 0deg, transparent, var(--blue), transparent); }
.science-card::before { background: conic-gradient(from 0deg, transparent, var(--green), transparent); }
.language-card::before { background: conic-gradient(from 0deg, transparent, var(--purple), transparent); }
.piano-card::before { background: conic-gradient(from 0deg, transparent, var(--pink), transparent); }

@keyframes rotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.subject-card:hover {
    transform: translateY(-10px) scale(1.05);
    box-shadow: var(--shadow-heavy);
}

.subject-emoji {
    font-size: 4rem;
    margin-bottom: 1rem;
    animation: bounce 2s infinite;
}

.subject-card h4 {
    font-family: 'Fredoka', cursive;
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.subject-details {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.detail {
    background: rgba(255, 255, 255, 0.5);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
}

.success-rate {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.rate-emoji {
    font-size: 1.5rem;
}

/* Testimonials Carousel */
.testimonials-carousel {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.testimonial {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow-soft);
    margin-bottom: 2rem;
    opacity: 0;
    transform: translateX(50px);
    transition: var(--transition);
    display: none;
}

.testimonial.active {
    opacity: 1;
    transform: translateX(0);
    display: block;
    animation: slideInRight 0.5s ease-out;
}

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

.quote-emoji {
    font-size: 3rem;
    text-align: center;
    margin-bottom: 1rem;
}

.testimonial-content p {
    font-size: 1.1rem;
    line-height: 1.6;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-style: italic;
}

.testimonial-author {
    text-align: center;
}

.author-name {
    font-weight: 700;
    color: var(--text-primary);
    font-size: 1.1rem;
    display: block;
    margin-bottom: 0.25rem;
}

.author-relation {
    color: var(--text-secondary);
    font-size: 0.9rem;
    display: block;
    margin-bottom: 0.5rem;
}

.stars {
    font-size: 1.2rem;
}

.testimonial-nav {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

.nav-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: none;
    background: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: var(--transition);
}

.nav-dot.active {
    background: var(--primary);
    transform: scale(1.2);
}

/* Contact Section */
.contact-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #ff9a9e 0%, #fecfef 50%, #fecfef 100%);
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.contact-info h3,
.contact-form h3 {
    font-family: 'Fredoka', cursive;
    font-size: 2rem;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

.contact-info p {
    font-size: 1.1rem;
    line-height: 1.6;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-method {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    text-decoration: none;
    color: inherit;
    box-shadow: var(--shadow-soft);
    transition: var(--transition);
}

.contact-method:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: var(--shadow-medium);
}

.method-icon {
    font-size: 2.5rem;
    flex-shrink: 0;
}

.method-details h4 {
    font-family: 'Fredoka', cursive;
    font-size: 1.2rem;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.method-details span {
    font-weight: 600;
    color: var(--text-secondary);
    display: block;
    margin-bottom: 0.25rem;
}

.method-details p {
    font-size: 0.9rem;
    color: var(--text-light);
    margin: 0;
}

.fun-form {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow-soft);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--border-radius-small);
    font-size: 1rem;
    font-family: 'Poppins', sans-serif;
    background: rgba(255, 255, 255, 0.5);
    transition: var(--transition);
    color: var(--text-primary);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: rgba(255, 255, 255, 0.8);
    transform: translateY(-2px);
    box-shadow: var(--shadow-soft);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-light);
    font-style: italic;
}

.btn-contact {
    width: 100%;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    position: relative;
    overflow: hidden;
}

.btn-contact .btn-emoji {
    margin-left: 0.5rem;
    font-size: 1.2rem;
    transition: var(--transition);
}

.btn-contact:hover .btn-emoji {
    animation: bounce 0.6s ease;
}

/* Video Modal */
.video-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10000;
    background: rgba(0, 0, 0, 0.9);
}

.video-modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease-out;
}

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

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.modal-content {
    position: relative;
    width: 90%;
    max-width: 900px;
    background: var(--bg-card);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-heavy);
    animation: scaleIn 0.3s ease-out;
}

@keyframes scaleIn {
    from {
        transform: scale(0.8);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

.modal-close {
    position: absolute;
    top: 15px;
    right: 20px;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    z-index: 1002;
    transition: var(--transition);
    padding: 5px;
}

.modal-close:hover {
    transform: scale(1.2) rotate(90deg);
}

.modal-header {
    padding: 1rem 2rem;
    background: var(--primary);
    color: white;
    text-align: center;
}

.modal-header h3 {
    font-family: 'Fredoka', cursive;
    margin: 0;
    font-size: 1.5rem;
}

.video-container {
    width: 100%;
    height: 0;
    padding-bottom: 56.25%;
    position: relative;
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.modal-footer {
    padding: 1rem 2rem;
    text-align: center;
    background: var(--bg-secondary);
}

.modal-footer p {
    margin: 0;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Footer */
.footer {
    background: linear-gradient(135deg, var(--text-primary) 0%, #636e72 100%);
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-main h4 {
    font-family: 'Fredoka', cursive;
    font-size: 2rem;
    margin-bottom: 1rem;
}

.footer-main p {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    opacity: 0.9;
}

.footer-stats {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.footer-stat {
    background: rgba(255, 255, 255, 0.1);
    padding: 8px 16px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.9rem;
}

.footer-links {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.footer-section h4 {
    font-family: 'Fredoka', cursive;
    font-size: 1.3rem;
    margin-bottom: 1rem;
}

.footer-nav,
.footer-social {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-nav a,
.footer-social a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
    font-weight: 500;
}

.footer-nav a:hover,
.footer-social a:hover {
    color: white;
    transform: translateX(5px);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding-top: 2rem;
    text-align: center;
}

.footer-bottom p {
    opacity: 0.8;
    font-size: 0.95rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    body {
        margin-left: 60px;
    }

    body.sidebar-expanded {
        margin-left: 60px;
    }

    .sidebar {
        width: 60px;
        padding: 15px 0;
    }

    .sidebar.expanded {
        width: 200px;
        box-shadow: 5px 0 30px rgba(0, 0, 0, 0.15);
    }

    .sidebar-logo .logo-text {
        font-size: 1.2rem;
    }

    .sidebar-link {
        padding: 12px;
    }

    .sidebar-icon {
        font-size: 1.3rem;
        min-width: 36px;
    }

    .sidebar-text {
        font-size: 0.9rem;
    }

    .sidebar-toggle {
        width: 35px;
        height: 35px;
        bottom: 20px;
    }

    .hero-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
        padding-top: 2rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .profile-image {
        width: 250px;
        height: 250px;
    }

    .hero-stats {
        justify-content: center;
        flex-wrap: wrap;
    }

    .section-title {
        font-size: 2rem;
        flex-direction: column;
        gap: 0.5rem;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .achievement-item.featured {
        grid-column: span 1;
        grid-row: span 1;
    }

    .achievements-grid {
        grid-template-columns: 1fr;
    }

    .performances-grid {
        grid-template-columns: 1fr;
    }

    .dance-card.featured {
        grid-column: span 1;
    }

    .dancing-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }

    .subjects-grid {
        grid-template-columns: 1fr;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }

    .footer-links {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

@media (max-width: 480px) {
    body {
        margin-left: 0;
        padding-bottom: 60px;
    }

    body.sidebar-expanded {
        margin-left: 0;
    }

    .sidebar {
        bottom: 0;
        left: 0;
        right: 0;
        top: auto;
        height: 60px;
        width: 100%;
        flex-direction: row;
        padding: 0 10px;
        border-right: none;
        border-top: 1px solid rgba(0, 0, 0, 0.05);
    }

    .sidebar.expanded {
        height: auto;
        width: 100%;
        flex-direction: column;
        padding: 20px 10px;
    }

    .sidebar-logo {
        display: none;
    }

    .sidebar-menu {
        flex-direction: row;
        padding: 0;
        justify-content: space-around;
        gap: 0;
    }

    .sidebar.expanded .sidebar-menu {
        flex-direction: column;
        gap: 5px;
    }

    .sidebar-link {
        padding: 8px;
        flex-direction: column;
        gap: 2px;
    }

    .sidebar.expanded .sidebar-link {
        flex-direction: row;
        padding: 12px;
    }

    .sidebar-icon {
        font-size: 1.2rem;
        min-width: auto;
    }

    .sidebar-text {
        display: none;
    }

    .sidebar.expanded .sidebar-text {
        display: block;
        opacity: 1;
        font-size: 0.85rem;
    }

    .sidebar-toggle {
        position: fixed;
        bottom: 80px;
        right: 20px;
        left: auto;
        transform: none;
    }

    .sidebar:not(.expanded) .sidebar-link::after {
        display: none;
    }

    .hero-title {
        font-size: 2rem;
    }

    .profile-image {
        width: 200px;
        height: 200px;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 250px;
    }

    .modal-content {
        width: 95%;
        margin: 0 10px;
    }
}

/* Loading Animation */
.loading {
    opacity: 0;
    transform: translateY(20px);
}

.loaded .loading {
    animation: fadeInUp 0.6s ease-out forwards;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}