:root {
    --bg-color: #ffffff;
    --bg-secondary: #fff5f8;
    --text-main: #2d3436;
    --text-muted: #636e72;
    
    /* Gradients & Accents (Pink Theme) */
    --primary-color: #ff6b81;
    --secondary-color: #ff4757;
    --accent-blue: #70a1ff;
    --accent-yellow: #eccc68;
    --accent-green: #2ed573;
    
    --gradient-glow: linear-gradient(135deg, #ff9a9e 0%, #fecfef 99%, #fecfef 100%);
    --gradient-primary: linear-gradient(135deg, #ff6b81 0%, #ff4757 100%);
    
    /* UI Elements */
    --card-bg: rgba(255, 255, 255, 0.95);
    --card-border: rgba(255, 107, 129, 0.15);
    --card-shadow: 0 10px 30px rgba(255, 107, 129, 0.08);
    --glass-blur: blur(12px);
    
    /* Spacing & Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
    scroll-behavior: smooth;
    background-image: radial-gradient(#ff6b81 0.5px, transparent 0.5px);
    background-size: 20px 20px;
    background-color: #fafafa;
}

h1, h2, h3, h4, h5, h6, .logo {
    font-family: 'Outfit', sans-serif;
}

ul {
    list-style: none;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

.container {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Background Blurs */
.bg-shape {
    position: absolute;
    width: 40vw;
    height: 40vw;
    border-radius: 50%;
    filter: blur(100px);
    z-index: -1;
    opacity: 0.6;
    animation: float 20s infinite ease-in-out alternate;
}

.bg-pink1 {
    top: -10vw;
    left: -10vw;
    background: radial-gradient(circle, rgba(255,107,129,0.4) 0%, rgba(255,255,255,0) 70%);
}

.bg-pink2 {
    top: 50vh;
    right: -10vw;
    background: radial-gradient(circle, rgba(255,165,2,0.3) 0%, rgba(255,107,129,0) 70%);
    animation-delay: -5s;
}

@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(30px, 40px) scale(1.05); }
    100% { transform: translate(-20px, 60px) scale(0.95); }
}

/* Typography Utilities */
.text-primary {
    color: var(--primary-color);
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}

.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.4rem 1.2rem;
    background: #ffeff1;
    border: 1px solid rgba(255,107,129,0.3);
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--secondary-color);
    margin-bottom: 1.5rem;
    box-shadow: 0 4px 10px rgba(255,107,129,0.1);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.8rem 1.8rem;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    font-size: 1rem;
    border: none;
    transition: var(--transition);
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 15px rgba(255,107,129,0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(255,107,129,0.5);
}

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

.btn-secondary:hover {
    background: #fff5f8;
    transform: translateY(-3px);
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    transition: var(--transition);
    padding: 1.5rem 0;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(0,0,0,0.05);
    padding: 1rem 0;
    box-shadow: 0 5px 20px rgba(0,0,0,0.02);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo i {
    color: var(--primary-color);
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-muted);
}

.nav-links a:hover, 
.nav-links a.active {
    color: var(--primary-color);
}

.mobile-menu-btn {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--primary-color);
}

/* Section Common */
.section {
    padding: 6rem 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 3rem;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--text-main);
}

.section-desc {
    color: var(--text-muted);
    font-size: 1.125rem;
}

.glass-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    box-shadow: var(--card-shadow);
    border-radius: 20px;
    padding: 2.5rem;
    transition: var(--transition);
}

/* Hero / Warm-Up Section */
.hero {
    min-height: 100vh;
    padding-top: 8rem;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.hero-title {
    font-size: 3.5rem;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.hero-desc {
    font-size: 1.15rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    background: white;
    padding: 1.5rem;
    border-radius: 12px;
    border-left: 5px solid var(--accent-blue);
    box-shadow: 0 4px 15px rgba(0,0,0,0.03);
}

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

.board-illustration {
    background: #2f3640;
    border: 12px solid #8e44ad;
    border-bottom: 15px solid #8e44ad;
    border-radius: 10px;
    height: 400px;
    width: 100%;
    position: relative;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    transform: rotate(2deg);
    padding: 2rem;
    color: white;
    font-family: 'Comic Sans MS', 'Chalkboard SE', sans-serif;
    display: flex;
    flex-direction: column;
}

.board-illustration h3 {
    text-align: center;
    margin-bottom: 2rem;
    font-size: 1.8rem;
    border-bottom: 1px dashed rgba(255,255,255,0.3);
    padding-bottom: 1rem;
}

.chalk-text {
    font-size: 1.2rem;
    line-height: 2;
    color: #f5f6fa;
}

.chalk-yellow { color: #fbc531; }
.chalk-pink { color: #e84118; }
.chalk-blue { color: #00a8ff; }

/* Presentation Section (Formula) */
.formula-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 3rem;
}

.formula-card {
    background: white;
    border-radius: 16px;
    padding: 0;
    overflow: hidden;
    box-shadow: var(--card-shadow);
    border: 2px solid white;
    transition: var(--transition);
}

.formula-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
}

.fc-header {
    padding: 1.5rem;
    color: white;
    text-align: center;
    font-weight: bold;
    font-size: 1.2rem;
}

.fc-header.positive { background: var(--accent-green); }
.fc-header.negative { background: var(--secondary-color); }
.fc-header.question { background: var(--accent-blue); }

.fc-body {
    padding: 2rem;
    text-align: center;
}

.fc-body .formula {
    font-family: 'Courier New', Courier, monospace;
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-main);
}

.fc-body .example {
    font-style: italic;
    color: var(--text-muted);
}

.signal-words {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}

.signal-chip {
    background: #fff0f5;
    color: var(--primary-color);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.9rem;
}

/* Practice Quiz Area */
.quiz-container {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    border-radius: 20px;
    box-shadow: 0 15px 50px rgba(255,107,129,0.15);
    overflow: hidden;
    border: 3px solid #ffeff1;
}

.quiz-header {
    background: var(--gradient-primary);
    color: white;
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.quiz-timer {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: bold;
    font-size: 1.2rem;
    background: rgba(255,255,255,0.2);
    padding: 0.5rem 1rem;
    border-radius: 20px;
}

.quiz-body {
    padding: 3rem 2rem;
    text-align: center;
    min-height: 300px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.quiz-question {
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 2.5rem;
    color: var(--text-main);
}

.quiz-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.option-btn {
    padding: 1rem;
    border: 2px solid #f1f2f6;
    background: white;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.option-btn:hover {
    border-color: var(--accent-blue);
    background: #f1f8ff;
}

.option-btn.correct {
    background: #e8f8f5;
    border-color: var(--accent-green);
    color: #117a65;
}

.option-btn.wrong {
    background: #fdedec;
    border-color: var(--secondary-color);
    color: #922b21;
}

.quiz-feedback {
    margin-top: 1.5rem;
    font-weight: 600;
    font-size: 1.2rem;
    min-height: 30px;
}

.quiz-footer {
    padding: 1rem 2rem;
    background: #fafafa;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid #f1f2f6;
}

/* Steps (Production) */
.steps-container {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    max-width: 800px;
    margin: 0 auto;
}

.step-card {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    background: white;
    padding: 1.5rem;
    border-radius: 16px;
    box-shadow: var(--card-shadow);
}

.step-number {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    flex-shrink: 0;
}

/* Wrap up */
.wrapup-box {
    background: var(--gradient-primary);
    color: white;
    border-radius: 20px;
    padding: 4rem 2rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.wrapup-box h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    position: relative;
    z-index: 2;
}

.homework-list {
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(5px);
    max-width: 600px;
    margin: 0 auto;
    padding: 2rem;
    border-radius: 12px;
    text-align: left;
    position: relative;
    z-index: 2;
}

.homework-list li {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.1rem;
}

/* Animations */
.reveal, .reveal-up {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.active, .reveal-up.active {
    opacity: 1;
    transform: translate(0);
}

/* Contact Section */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}

.contact-card {
    background: white;
    border-radius: 20px;
    padding: 2rem;
    text-align: center;
    box-shadow: var(--card-shadow);
    border: 1px solid var(--card-border);
    transition: var(--transition);
}

.contact-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
}

.avatar-wrapper {
    width: 120px;
    height: 120px;
    margin: 0 auto 1.5rem;
    border-radius: 50%;
    padding: 5px;
    background: var(--gradient-primary);
}

.avatar-img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid white;
}

.member-role {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.member-info {
    text-align: left;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px dashed rgba(0,0,0,0.1);
}

.member-info li {
    margin-bottom: 0.8rem;
    color: var(--text-muted);
    font-size: 0.9rem;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.member-info i {
    color: var(--accent-blue);
    margin-top: 4px;
}

/* Multi-page Navigation */
.bottom-nav {
    display: flex;
    justify-content: space-between;
    margin: 4rem 0 0;
    padding-top: 2rem;
    border-top: 1px solid rgba(0,0,0,0.05);
}

.bottom-nav.nav-right {
    justify-content: flex-end;
}

.bottom-nav a {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.8rem 1.5rem;
    border-radius: 50px;
    font-weight: 600;
    background: white;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    transition: var(--transition);
}

.bottom-nav a:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.course-modules {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.module-card {
    background: white;
    border-radius: 20px;
    padding: 2rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    box-shadow: var(--card-shadow);
    border: 1px solid var(--card-border);
    transition: var(--transition);
    cursor: pointer;
}

.module-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 15px 40px rgba(255,107,129,0.15);
}

.module-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    background: #fff0f5;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.module-info h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: var(--text-main);
}

.module-info p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* Cute Animations overlay */

.cute-item {
    position: absolute;
    font-size: 3rem;
    z-index: 10;
    pointer-events: none;
    opacity: 0.8;
}

.cute-float-1 {
    top: 20%;
    left: 10%;
    animation: float1 4s ease-in-out infinite alternate;
}

.cute-bounce-1 {
    top: 60%;
    right: 15%;
    animation: bounceCute 3s ease-in-out infinite;
}

.cute-float-2 {
    bottom: 20%;
    left: 45%;
    animation: float2 5s ease-in-out infinite alternate;
}

@keyframes float1 {
    0% { transform: translateY(0) rotate(0deg); }
    100% { transform: translateY(-30px) rotate(10deg); }
}

@keyframes float2 {
    0% { transform: translateY(0) scale(1); }
    100% { transform: translateY(20px) scale(1.2); }
}

@keyframes bounceCute {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-40px); }
}

/* Footer (Revamped) */
.footer {
    padding: 4rem 0 1rem;
    color: var(--text-muted);
    border-top: 1px solid rgba(0,0,0,0.05);
    background: #fff;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-logo-img {
    max-width: 180px;
    height: auto;
}

.footer-col h4 {
    color: var(--text-main);
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.footer-col ul li {
    margin-bottom: 0.8rem;
}

.footer-col ul a {
    color: var(--text-muted);
    transition: var(--transition);
}

.footer-col ul a:hover {
    color: var(--primary-color);
    padding-left: 5px;
}

.footer-col ul i {
    font-size: 0.8rem;
    margin-right: 5px;
    color: var(--primary-color);
}

.newsletter-form {
    display: flex;
    margin-top: 1rem;
    border: 1px solid var(--card-border);
    border-radius: 50px;
    overflow: hidden;
    background: #fff5f8;
}

.newsletter-form input {
    flex: 1;
    padding: 0.8rem 1.2rem;
    border: none;
    background: transparent;
    outline: none;
}

.newsletter-form .btn {
    border-radius: 0 50px 50px 0;
    padding: 0.8rem 1.5rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(0,0,0,0.05);
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links, .nav-btn { display: none; }
    .mobile-menu-btn { display: block; }
    
    .hero-container { grid-template-columns: 1fr; text-align: center; }
    .hero-title { font-size: 2.8rem; }
    .hero-actions { justify-content: center; }
    
    .formula-grid { grid-template-columns: 1fr; }
    .quiz-options { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; text-align: center; }
    .footer-col ul a:hover { padding-left: 0; }
}
