/* ========================================
   YouPlaySports - Main Stylesheet
   Performance Optimized with CSS-Only Animations
   ======================================== */

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--color-navy);
    background: linear-gradient(to bottom, #f8fafc 0%, #ffffff 100%);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.2s ease;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

ul {
    list-style: none;
}

/* ========== Header / Navigation ========== */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    z-index: var(--z-fixed);
}

.nav-container {
    max-width: var(--container-xl);
    margin: 0 auto;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-lg);
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo a {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo img {
    height: 45px;
    width: auto;
}

.logo-text {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--color-navy);
    letter-spacing: 0.5px;
}

.nav-links {
    display: flex;
    gap: var(--spacing-lg);
    align-items: center;
}

.nav-links a {
    font-weight: var(--font-weight-medium);
    color: var(--color-navy);
}

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

.nav-cta-btn {
    padding: var(--btn-padding-y) var(--btn-padding-x);
    background: linear-gradient(135deg, var(--color-green) 0%, #28a745 100%);
    color: var(--color-pure-white);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--btn-border-radius);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    box-shadow: 0 4px 12px rgba(50, 205, 50, 0.3);
}

.nav-cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(50, 205, 50, 0.4);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--color-navy);
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* ========== Hero Section ========== */
.hero-section {
    margin-top: var(--header-height);
    padding: var(--spacing-3xl) var(--spacing-lg);
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 50%, #dbeafe 100%);
    position: relative;
    min-height: calc(100vh - var(--header-height));
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(50, 205, 50, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero-section::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -5%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(135, 206, 235, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero-container {
    max-width: var(--container-xl);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: 600px;
}

.hero-headline {
    font-family: var(--font-heading);
    font-size: var(--font-size-5xl);
    font-weight: var(--font-weight-extrabold);
    line-height: var(--line-height-tight);
    color: var(--color-navy);
    margin-bottom: var(--spacing-md);
}

.hero-subtext {
    font-size: var(--font-size-xl);
    line-height: var(--line-height-relaxed);
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-xl);
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-md);
}

.app-store-badge img {
    height: 54px;
    width: auto;
    transition: transform 0.2s ease;
}

.app-store-badge:hover img {
    transform: scale(1.05);
}

.btn-secondary {
    padding: var(--btn-padding-y) var(--btn-padding-x);
    border: 2px solid var(--color-navy);
    color: var(--color-navy);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--btn-border-radius);
    transition: background-color 0.2s ease, color 0.2s ease;
}

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

.platform-notice {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    font-style: italic;
}

.hero-mockups {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.mockup-container {
    position: relative;
    width: 100%;
    max-width: 500px;
}

.mockup-primary {
    width: 280px;
    height: auto;
    border-radius: var(--radius-2xl);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15);
    position: relative;
    z-index: 2;
}

.mockup-secondary {
    width: 240px;
    height: auto;
    border-radius: var(--radius-2xl);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
    position: absolute;
    right: -40px;
    top: 60px;
    z-index: 1;
}

/* ========== Section Containers ========== */
.section-container {
    max-width: var(--container-xl);
    margin: 0 auto;
    padding: var(--spacing-3xl) var(--spacing-lg);
    position: relative;
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-navy);
    text-align: center;
    margin-bottom: var(--spacing-3xl);
    position: relative;
    display: inline-block;
    width: 100%;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--color-green) 0%, var(--color-sky-blue) 100%);
    border-radius: 2px;
}

/* ========== Features Section ========== */
.features-section {
    background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
    position: relative;
}

.features-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 200px;
    background: linear-gradient(to bottom, rgba(135, 206, 235, 0.05), transparent);
    pointer-events: none;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.feature-card {
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid rgba(135, 206, 235, 0.1);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(50, 205, 50, 0.15);
}

.feature-image {
    margin-bottom: var(--spacing-md);
    display: flex;
    justify-content: center;
}

.feature-image img {
    width: 200px;
    height: auto;
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.feature-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-navy);
    margin-bottom: var(--spacing-sm);
}

.feature-description {
    font-size: var(--font-size-base);
    line-height: var(--line-height-relaxed);
    color: var(--color-gray-700);
}

/* ========== How It Works Section ========== */
.how-it-works-section {
    background: linear-gradient(135deg, #ecfdf5 0%, #f0fdfa 50%, #f0f9ff 100%);
    position: relative;
}

.how-it-works-section::before {
    content: '';
    position: absolute;
    top: 10%;
    right: 5%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(50, 205, 50, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.how-it-works-section::after {
    content: '';
    position: absolute;
    bottom: 10%;
    left: 5%;
    width: 250px;
    height: 250px;
    background: radial-gradient(circle, rgba(135, 206, 235, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.step-card {
    text-align: center;
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.9) 0%, rgba(255, 255, 255, 0.6) 100%);
    border-radius: var(--radius-xl);
    backdrop-filter: blur(10px);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.step-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.step-number {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-green), var(--color-sky-blue));
    color: var(--color-pure-white);
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    box-shadow: 0 8px 16px rgba(50, 205, 50, 0.3);
}

.step-card h3 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-navy);
    margin-bottom: var(--spacing-sm);
}

.step-card p {
    font-size: var(--font-size-base);
    line-height: var(--line-height-relaxed);
    color: var(--color-gray-700);
}

/* ========== CTA Section ========== */
.cta-section {
    background: linear-gradient(135deg, #1E3D58 0%, #0f2942 50%, #1a4d6d 100%);
    padding: var(--spacing-3xl) var(--spacing-lg);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(50, 205, 50, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.cta-section::after {
    content: '';
    position: absolute;
    bottom: -50%;
    left: -20%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(135, 206, 235, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.cta-container {
    max-width: 700px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.cta-headline {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-pure-white);
    margin-bottom: var(--spacing-xl);
}

.btn-primary-large {
    display: inline-block;
    margin-bottom: var(--spacing-md);
}

.btn-primary-large img {
    height: 60px;
    width: auto;
    transition: transform 0.2s ease;
}

.btn-primary-large:hover img {
    transform: scale(1.05);
}

.cta-subtext {
    font-size: var(--font-size-base);
    color: var(--color-gray-300);
}

/* ========== Footer ========== */
.main-footer {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #334155 100%);
    color: var(--color-gray-300);
    padding: var(--spacing-3xl) var(--spacing-lg) var(--spacing-lg);
    position: relative;
}

.main-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-green) 0%, var(--color-sky-blue) 100%);
}

.footer-container {
    max-width: var(--container-xl);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-xl);
}

.footer-brand img {
    height: 35px;
    width: auto;
    margin-bottom: var(--spacing-sm);
    filter: brightness(0) invert(1);
}

.footer-brand p {
    font-size: var(--font-size-base);
    line-height: var(--line-height-relaxed);
    color: var(--color-gray-400);
    max-width: 350px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.footer-column h4 {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-pure-white);
    margin-bottom: var(--spacing-md);
}

.footer-column ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-column a {
    font-size: var(--font-size-base);
    color: var(--color-gray-400);
}

.footer-column a:hover {
    color: var(--color-green);
}

.footer-bottom {
    max-width: var(--container-xl);
    margin: 0 auto;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-700);
    text-align: center;
}

.footer-bottom p {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

/* ========== Utility Classes ========== */
.text-center {
    text-align: center;
}

.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }