/* ==========================================================================
   Gym Workouts Website Styles
   ========================================================================== */

/* CSS Variables */
:root {
    /* Colors */
    --primary-blue: #007AFF;
    --primary-dark: #0051D5;
    --secondary-gray: #8E8E93;
    --bg-light: #FFFFFF;
    --bg-gray: #F2F2F7;
    --text-primary: #000000;
    --text-secondary: #6C6C70;
    --border-color: #E5E5EA;
    --shadow-color: rgba(0, 0, 0, 0.1);

    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
    --spacing-xxl: 64px;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica', 'Arial', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    color: var(--text-primary);
    background-color: var(--bg-light);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

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

a:hover {
    color: var(--primary-dark);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 14px 28px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-dark));
    color: white;
    box-shadow: 0 4px 12px rgba(0, 122, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 122, 255, 0.4);
}

.btn-download {
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-dark));
    color: white;
    padding: 18px 36px;
    font-size: 1.125rem;
    box-shadow: 0 6px 20px rgba(0, 122, 255, 0.3);
}

.btn-download:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 122, 255, 0.4);
}

/* Navigation */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: var(--spacing-sm) 0;
}

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

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

.nav-logo {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
}

.brand-name {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.nav-links {
    display: flex;
    gap: var(--spacing-md);
}

.nav-links a {
    color: var(--text-primary);
    font-weight: 500;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    transition: all 0.3s ease;
}

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

/* Hero Section */
.hero {
    padding: var(--spacing-xxl) 0;
    background: linear-gradient(180deg, var(--bg-light) 0%, var(--bg-gray) 100%);
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

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

.hero-title {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.hero-buttons {
    margin-bottom: var(--spacing-md);
}

.hero-badges {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.badge {
    display: inline-block;
    padding: 6px 12px;
    background-color: var(--bg-gray);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* Phone Mockup */
.phone-mockup {
    width: 300px;
    height: 600px;
    background: linear-gradient(135deg, #1e1e1e, #2d2d2d);
    border-radius: 40px;
    padding: 12px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    margin: 0 auto;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: white;
    border-radius: 32px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.screenshot-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, var(--bg-light) 0%, var(--bg-gray) 100%);
}

/* Features Section */
.features {
    padding: var(--spacing-xxl) 0;
    background-color: var(--bg-light);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    text-align: center;
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.feature-card {
    padding: var(--spacing-lg);
    background-color: var(--bg-light);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px var(--shadow-color);
}

.feature-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-sm);
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Exercise Categories */
.exercises {
    padding: var(--spacing-xxl) 0;
    background-color: var(--bg-gray);
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--spacing-sm);
}

.category-card {
    padding: var(--spacing-md);
    background-color: var(--bg-light);
    border-radius: var(--radius-md);
    text-align: center;
    border: 2px solid transparent;
    transition: all 0.3s ease;
}

.category-card:hover {
    border-color: var(--category-color);
    transform: translateY(-2px);
    box-shadow: 0 8px 16px var(--shadow-color);
}

.category-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-xs);
}

.category-card h3 {
    font-size: 1rem;
    margin-bottom: 4px;
}

.category-card p {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Why Choose Section */
.why-choose {
    padding: var(--spacing-xxl) 0;
    background-color: var(--bg-light);
}

.reasons-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.reason-card {
    padding: var(--spacing-lg);
    background-color: var(--bg-gray);
    border-radius: var(--radius-lg);
    transition: all 0.3s ease;
}

.reason-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 16px var(--shadow-color);
}

.reason-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: var(--spacing-xs);
}

.reason-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
}

.reason-card p {
    color: var(--text-secondary);
}

/* Download Section */
.download {
    padding: var(--spacing-xxl) 0;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-dark));
    color: white;
}

.download-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.download-content h2 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
    color: white;
}

.download-content p {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.9;
}

.download-info {
    font-size: 0.875rem;
    opacity: 0.8;
    margin-top: var(--spacing-sm);
}

/* Footer */
.footer {
    background-color: #1c1c1e;
    color: white;
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

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

.footer-logo {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-sm);
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
}

.footer-section h4 {
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
    color: white;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 8px;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.7);
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.875rem;
}

/* Legal Pages */
.legal-page {
    padding: var(--spacing-xl) 0;
    background-color: var(--bg-light);
    min-height: 100vh;
}

.legal-content {
    max-width: 900px;
    margin: 0 auto;
}

.legal-content h1 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-xs);
}

.last-updated {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-lg);
}

.legal-section {
    margin-bottom: var(--spacing-lg);
}

.legal-section h2 {
    font-size: 1.75rem;
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.legal-section h3 {
    font-size: 1.25rem;
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.legal-section p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-sm);
}

.legal-section ul {
    margin-left: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.legal-section ul li {
    color: var(--text-secondary);
    margin-bottom: 8px;
    line-height: 1.6;
}

.legal-section strong {
    color: var(--text-primary);
    font-weight: 600;
}

.contact-list {
    list-style: none;
    margin-left: 0;
}

.contact-list li {
    margin-bottom: var(--spacing-xs);
}

.acknowledgment {
    background-color: var(--bg-gray);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--primary-blue);
}

.acknowledgment h2 {
    margin-top: 0;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-text {
        max-width: 100%;
    }

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

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

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

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

    .hero-subtitle {
        font-size: 1.25rem;
    }

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

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

    .categories-grid {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    }

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

    .phone-mockup {
        width: 250px;
        height: 500px;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-xs: 6px;
        --spacing-sm: 12px;
        --spacing-md: 18px;
        --spacing-lg: 24px;
        --spacing-xl: 32px;
        --spacing-xxl: 48px;
    }

    .hero-title {
        font-size: 1.75rem;
    }

    .btn {
        padding: 12px 20px;
        font-size: 0.875rem;
    }

    .btn-download {
        padding: 14px 24px;
        font-size: 1rem;
    }
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.feature-card,
.reason-card,
.category-card {
    animation: fadeIn 0.6s ease-out;
}

/* Smooth Scrolling for Safari */
@supports (-webkit-touch-callout: none) {
    html {
        scroll-behavior: auto;
    }
}