/* ======================
   Variables CSS
   ====================== */
:root {
    --primary-color: #0b2eee;
    --primary-dark: #0922b8;
    --primary-light: #b3c4ff;
    --secondary-color: #fecd08;
    --success-color: #4CAF50;
    --warning-color: #FF9800;
    --danger-color: #F44336;
    --light-gray: #F5F5F5;
    --medium-gray: #9E9E9E;
    --dark-gray: #424242;
    --text-primary: #212121;
    --text-secondary: #757575;
    --white: #f7fbff;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 4px 16px rgba(0, 0, 0, 0.15);
    --shadow-large: 0 8px 32px rgba(0, 0, 0, 0.12);
    --border-radius: 12px;
    --border-radius-small: 8px;
    --border-radius-large: 16px;
    --transition: all 0.3s ease;
}

/* ======================
   Reset & Base
   ====================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

html {
    scroll-behavior: smooth;
}

a {
    text-decoration: none;
    color: inherit;
}

img {
    max-width: 100%;
    height: auto;
}

/* ======================
   Container
   ====================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ======================
   Navigation
   ====================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
    z-index: 1000;
    transition: var(--transition);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 24px;
    font-weight: 700;
}

.logo-img {
    width: 40px;
    height: 40px;
}

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

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

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition);
}

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

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}

/* ======================
   Buttons
   ====================== */
.btn-primary, .btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: var(--border-radius-small);
    font-weight: 600;
    font-size: 16px;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

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

.btn-secondary:hover {
    background: var(--primary-light);
}

.btn-primary-small {
    padding: 10px 20px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: var(--border-radius-small);
    font-weight: 600;
    transition: var(--transition);
}

.btn-primary-small:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.btn-icon {
    width: 20px;
    height: 20px;
}

/* ======================
   Hero Section
   ====================== */
.hero {
    position: relative;
    padding: 140px 0 120px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--white);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="40" height="40" patternUnits="userSpaceOnUse"><path d="M 40 0 L 0 0 0 40" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.hero-content {
    position: relative;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-title {
    font-size: 56px;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
}

.hero-title .highlight {
    color: var(--secondary-color);
}

.hero-description {
    font-size: 20px;
    line-height: 1.6;
    margin-bottom: 32px;
    opacity: 0.95;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    gap: 48px;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 36px;
    font-weight: 700;
    color: var(--white);
}

.stat-label {
    font-size: 14px;
    opacity: 0.85;
    margin-top: 4px;
}

.phone-mockup {
    position: relative;
    width: 100%;
    max-width: 300px;
    margin: 0 auto;
}

.phone-screen {
    position: relative;
    width: 100%;
    aspect-ratio: 9/19;
    background: var(--white);
    border-radius: 32px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    padding: 12px;
    overflow: hidden;
}

.screen-gradient {
    width: 100%;
    height: 100%;
    background-image: url('images/home.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    border-radius: 24px;
}

.hero-wave {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
}

.hero-wave svg {
    display: block;
    width: 100%;
    height: auto;
}

/* ======================
   Section Headers
   ====================== */
.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-title {
    font-size: 42px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.section-description {
    font-size: 18px;
    color: var(--text-secondary);
}

/* ======================
   Features Section
   ====================== */
.features {
    padding: 100px 0;
    background: var(--white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.feature-card {
    padding: 32px;
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-large);
}

.feature-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: var(--border-radius-small);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.feature-icon svg {
    width: 28px;
    height: 28px;
    color: var(--white);
    stroke-width: 2;
}

.feature-title {
    font-size: 22px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.feature-description {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ======================
   For Who Section
   ====================== */
.for-who {
    padding: 100px 0;
    background: var(--light-gray);
}

.roles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.role-card {
    position: relative;
    padding: 40px;
    background: var(--white);
    border-radius: var(--border-radius-large);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.role-card.featured {
    border: 3px solid var(--primary-color);
}

.role-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-large);
}

.featured-badge {
    position: absolute;
    top: -12px;
    right: 20px;
    padding: 6px 16px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
}

.role-icon {
    width: 72px;
    height: 72px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.role-icon.student {
    background: linear-gradient(135deg, #667eea, #764ba2);
}

.role-icon.coach {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
}

.role-icon.club {
    background: linear-gradient(135deg, #f093fb, #f5576c);
}

.role-icon svg {
    width: 36px;
    height: 36px;
    color: var(--white);
    stroke-width: 2;
}

.role-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 20px;
}

.role-features {
    list-style: none;
    margin-bottom: 24px;
}

.role-features li {
    padding: 8px 0;
    color: var(--text-secondary);
    font-size: 15px;
}

.role-cta {
    display: inline-flex;
    align-items: center;
    color: var(--primary-color);
    font-weight: 600;
    transition: var(--transition);
}

.role-cta:hover {
    transform: translateX(4px);
}

/* ======================
   Testimonials Section
   ====================== */
.testimonials {
    padding: 100px 0;
    background: var(--white);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.testimonial-card {
    padding: 32px;
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.testimonial-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.testimonial-stars {
    color: var(--secondary-color);
    font-size: 20px;
    margin-bottom: 16px;
}

.testimonial-text {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 24px;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.author-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 18px;
}

.author-name {
    font-weight: 600;
    color: var(--text-primary);
}

.author-role {
    font-size: 14px;
    color: var(--text-secondary);
}

/* ======================
   CTA Section
   ====================== */
.cta {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--white);
}

.cta-content {
    text-align: center;
}

.cta-title {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 16px;
}

.cta-description {
    font-size: 20px;
    margin-bottom: 40px;
    opacity: 0.95;
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 24px;
}

.download-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 32px;
    background: var(--white);
    color: var(--text-primary);
    border-radius: var(--border-radius-small);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.download-btn:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-large);
}

.download-icon {
    width: 40px;
    height: 40px;
    fill: var(--text-primary);
}

.download-text {
    text-align: left;
}

.download-small {
    font-size: 12px;
    color: var(--text-secondary);
}

.download-large {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.cta-note {
    font-size: 14px;
    opacity: 0.8;
}

/* ======================
   Footer
   ====================== */
.footer {
    background: var(--text-primary);
    color: var(--white);
    padding: 60px 0 24px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.footer-logo-img {
    width: 32px;
    height: 32px;
}

.footer-logo-text {
    font-size: 20px;
    font-weight: 700;
}

.footer-description {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 24px;
    line-height: 1.6;
}

.social-links {
    display: flex;
    gap: 16px;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

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

.social-links svg {
    width: 20px;
    height: 20px;
}

.footer-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
}

.footer-links {
    list-style: none;
}

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

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--white);
    padding-left: 4px;
}

.footer-bottom {
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
}

/* ======================
   Responsive Design
   ====================== */

/* Tablet */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 42px;
    }

    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .phone-mockup {
        max-width: 250px;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
}

/* Mobile */
@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 24px;
        box-shadow: var(--shadow-large);
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        z-index: 999;
    }

    .nav-links.active {
        transform: translateX(0);
    }

    .nav-links a {
        padding: 12px 0;
        border-bottom: 1px solid var(--light-gray);
    }

    .btn-primary-small {
        margin-top: 8px;
        text-align: center;
    }

    .mobile-menu-toggle {
        display: flex;
    }

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

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

    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }

    .hero {
        padding: 100px 0 80px;
    }

    .hero-title {
        font-size: 32px;
    }

    .hero-description {
        font-size: 16px;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .hero-stats {
        flex-direction: column;
        gap: 24px;
    }

    .section-title {
        font-size: 32px;
    }

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

    .cta-title {
        font-size: 32px;
    }

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

    .download-btn {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero-title {
        font-size: 28px;
    }

    .section-title {
        font-size: 28px;
    }

    .btn-primary, .btn-secondary {
        width: 100%;
        justify-content: center;
    }
}

/* ======================
   Animations
   ====================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-content,
.feature-card,
.role-card,
.testimonial-card {
    animation: fadeInUp 0.6s ease-out;
}

/* Smooth scroll offset for fixed navbar */
section {
    scroll-margin-top: 80px;
}