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

:root {
    /* Brand Colors */
    --primary-blue: #007AFF;
    --secondary-orange: #FF9500;
    --accent-green: #34C759;
    --destructive-red: #FF3B30;
    
    /* Neutral Colors */
    --text-primary: #1d1d1f;
    --text-secondary: #6e6e73;
    --background-white: #ffffff;
    --background-gray: #f5f5f7;
    --border-gray: #d2d2d7;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica', 'Arial', sans-serif;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
}

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

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

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

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    text-decoration: none;
}

.logo-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: var(--font-weight-medium);
    transition: color 0.3s ease;
}

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

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    padding: var(--spacing-xl) 0;
}

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

.hero-title {
    font-size: 3.5rem;
    font-weight: var(--font-weight-bold);
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.4;
}

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

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

.badge {
    background: rgba(255, 255, 255, 0.9);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: var(--font-weight-medium);
    border: 1px solid var(--border-gray);
}

/* Device Mockup */
.device-mockup {
    max-width: 400px;
    margin: 0 auto;
}

.placeholder-screenshot {
    background: var(--background-white);
    border: 8px solid #1d1d1f;
    border-radius: 40px;
    padding: var(--spacing-md);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    aspect-ratio: 9/19.5;
    display: flex;
    align-items: center;
    justify-content: center;
}

.placeholder-content {
    text-align: center;
    color: var(--text-secondary);
}

.placeholder-content p:first-child {
    font-size: 4rem;
    margin-bottom: var(--spacing-sm);
}

.placeholder-content p:nth-child(2) {
    font-size: 1.125rem;
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
}

.placeholder-note {
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
    opacity: 0.6;
}

/* Buttons */
.btn-primary,
.btn-download,
.btn-download-large {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--primary-blue);
    color: white;
    text-decoration: none;
    border-radius: 10px;
    font-weight: var(--font-weight-semibold);
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn-download {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1.125rem;
    padding: 1rem 2rem;
    background: #000;
}

.btn-download-large {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.25rem;
    padding: 1.25rem 2.5rem;
    background: #000;
}

.btn-primary:hover,
.btn-download:hover,
.btn-download-large:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.apple-icon {
    width: 24px;
    height: 24px;
    fill: white;
}

.download-info,
.cta-info {
    margin-top: var(--spacing-sm);
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Section Styles */
section {
    padding: var(--spacing-xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.section-header p {
    font-size: 1.25rem;
    color: var(--text-secondary);
}

/* Features Section */
.features {
    background: var(--background-white);
}

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

.feature-card {
    background: var(--background-gray);
    padding: var(--spacing-md);
    border-radius: 20px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.feature-card h3 {
    font-size: 1.5rem;
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

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

/* How It Works Section */
.how-it-works {
    background: var(--background-gray);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.step {
    text-align: center;
    padding: var(--spacing-md);
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--primary-blue);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    margin: 0 auto var(--spacing-sm);
}

.step h3 {
    font-size: 1.25rem;
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

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

/* Use Cases Section */
.use-cases {
    background: var(--background-white);
}

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

.use-case {
    background: var(--background-gray);
    padding: var(--spacing-md);
    border-radius: 15px;
    border-left: 4px solid var(--primary-blue);
}

.use-case h3 {
    font-size: 1.25rem;
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.use-case p {
    color: var(--text-secondary);
}

/* Testimonials Section */
.testimonials {
    background: var(--background-gray);
}

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

.testimonial {
    background: var(--background-white);
    padding: var(--spacing-md);
    border-radius: 15px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.testimonial-stars {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.testimonial-text {
    font-size: 1.125rem;
    line-height: 1.6;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.testimonial-author {
    color: var(--text-secondary);
    font-weight: var(--font-weight-medium);
}

/* CTA Section */
.cta {
    background: linear-gradient(135deg, var(--primary-blue) 0%, #0051D5 100%);
    color: white;
}

.cta-content {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

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

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

.cta-info {
    color: rgba(255, 255, 255, 0.8);
}

/* Footer */
.footer {
    background: var(--text-primary);
    color: white;
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.footer-logo {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    margin-bottom: var(--spacing-sm);
}

.footer-section h4 {
    font-size: 1.125rem;
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-sm);
}

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

.footer-section ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-xs);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
}

/* Responsive Design */
@media (max-width: 968px) {
    .hero-content {
        grid-template-columns: 1fr;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.25rem;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .features-grid,
    .use-cases-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
    }
    
    .nav-links {
        gap: var(--spacing-sm);
    }
    
    .nav-links a {
        font-size: 0.875rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
    
    .hero-badges {
        font-size: 0.75rem;
    }
    
    .btn-download,
    .btn-download-large {
        font-size: 1rem;
        padding: 0.875rem 1.5rem;
    }
    
    .steps-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-content h2 {
        font-size: 1.75rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .nav-links {
        flex-wrap: wrap;
        gap: var(--spacing-xs);
    }
    
    .logo-text {
        font-size: 1rem;
    }
    
    .hero-title {
        font-size: 1.75rem;
    }
    
    .section-header h2 {
        font-size: 1.5rem;
    }
}

/* ============================================
   BETA TESTERS SECTION
   ============================================ */

.beta-testers {
    background: linear-gradient(135deg, #228B22 0%, #1a6b1a 100%);
    color: white;
}

.beta-testers .section-header h2,
.beta-testers .section-header p {
    color: white;
}

.beta-content {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.beta-content p {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.95;
    line-height: 1.6;
}

.btn-beta-apply {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: white;
    color: #228B22;
    font-size: 1.125rem;
    font-weight: var(--font-weight-semibold);
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.btn-beta-apply:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
    background: #f5f5f7;
}

/* ============================================
   MODAL
   ============================================ */

.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
}

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

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    background: white;
    margin: 2rem;
    padding: 2.5rem;
    border-radius: 20px;
    max-width: 600px;
    width: 100%;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: slideDown 0.3s ease;
    z-index: 2001;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-close {
    position: absolute;
    right: 1.5rem;
    top: 1.5rem;
    font-size: 2rem;
    font-weight: 300;
    color: var(--text-secondary);
    cursor: pointer;
    transition: color 0.3s ease;
    line-height: 1;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    color: var(--text-primary);
}

.modal-content h2 {
    font-size: 2rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.modal-subtitle {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    font-size: 1rem;
}

/* ============================================
   FORM STYLES
   ============================================ */

#beta-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.form-group {
    width: 100%;
}

#beta-form input,
#beta-form select,
#beta-form textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    font-size: 1rem;
    font-family: var(--font-family);
    border: 2px solid var(--border-gray);
    border-radius: 10px;
    transition: all 0.3s ease;
    background: var(--background-white);
    color: var(--text-primary);
}

#beta-form input:focus,
#beta-form select:focus,
#beta-form textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1);
}

#beta-form input::placeholder,
#beta-form textarea::placeholder {
    color: var(--text-secondary);
}

#beta-form select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236e6e73' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
    cursor: pointer;
}

#beta-form select option {
    padding: 0.5rem;
}

#beta-form textarea {
    resize: vertical;
    min-height: 100px;
}

.btn-submit {
    width: 100%;
    padding: 1rem;
    background: var(--primary-blue);
    color: white;
    font-size: 1.125rem;
    font-weight: var(--font-weight-semibold);
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: var(--spacing-sm);
}

.btn-submit:hover:not(:disabled) {
    background: #0051D5;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 122, 255, 0.3);
}

.btn-submit:disabled {
    background: var(--text-secondary);
    cursor: not-allowed;
    opacity: 0.6;
}

.btn-loader {
    display: inline-block;
}

/* ============================================
   FORM MESSAGES
   ============================================ */

.form-message {
    display: none;
    padding: 1rem;
    border-radius: 10px;
    margin-top: var(--spacing-sm);
    text-align: center;
    font-weight: var(--font-weight-medium);
}

.form-message.show {
    display: block;
    animation: fadeIn 0.3s ease;
}

.form-message.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.form-message.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* ============================================
   ANIMATIONS
   ============================================ */

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

@keyframes slideDown {
    from { 
        transform: translateY(-50px); 
        opacity: 0; 
    }
    to { 
        transform: translateY(0); 
        opacity: 1; 
    }
}

/* ============================================
   RESPONSIVE - MODAL
   ============================================ */

@media (max-width: 768px) {
    .modal-content {
        margin: 1rem;
        padding: 2rem 1.5rem;
        max-height: 95vh;
    }
    
    .modal-content h2 {
        font-size: 1.5rem;
        padding-right: 2rem;
    }
    
    .modal-close {
        right: 1rem;
        top: 1rem;
    }
    
    #beta-form input,
    #beta-form select,
    #beta-form textarea {
        font-size: 16px; /* Prevents zoom on iOS */
    }
}

@media (max-width: 480px) {
    .modal-content {
        margin: 0.5rem;
        padding: 1.5rem 1rem;
    }
    
    .btn-submit {
        padding: 0.875rem;
    }
}