/* ============================================
   Reset & Base Styles
   ============================================ */

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

:root {
    --color-primary: #007AFF;
    --color-primary-hover: #0051D5;
    --color-secondary: #5856D6;
    --color-text: #1D1D1F;
    --color-text-light: #6E6E73;
    --color-bg: #FFFFFF;
    --color-bg-light: #F5F5F7;
    --color-bg-section: #FAFAFA;
    --color-border: #D2D2D7;
    --color-shadow: rgba(0, 0, 0, 0.1);
    --color-shadow-light: rgba(0, 0, 0, 0.05);
    
    --font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", system-ui, sans-serif;
    
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    --border-radius: 12px;
    --border-radius-lg: 20px;
    --border-radius-pill: 999px;
    
    --max-width: 1200px;
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: 17px;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   Typography
   ============================================ */

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    color: var(--color-text);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    letter-spacing: -0.02em;
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 600;
    letter-spacing: -0.01em;
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 600;
}

p {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-light);
}

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

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

a:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: 4px;
}

/* ============================================
   Container
   ============================================ */

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

@media (min-width: 768px) {
    .container {
        padding: 0 var(--spacing-lg);
    }
}

/* ============================================
   Header / Navigation
   ============================================ */

.header {
    position: sticky;
    top: 0;
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
    transition: var(--transition);
}

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

@media (min-width: 768px) {
    .nav {
        padding: var(--spacing-md) var(--spacing-lg);
    }
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
    text-decoration: none;
}

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

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

@media (min-width: 768px) {
    .nav-links {
        display: flex;
    }
}

.nav-link {
    color: var(--color-text-light);
    font-size: 0.95rem;
    font-weight: 400;
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--color-text);
}

/* App Store badge nav - hidden on mobile, shown on desktop */
.app-store-badge-nav {
    display: none;
}

@media (min-width: 768px) {
    .app-store-badge-nav {
        display: inline-block;
    }
}

.mobile-menu-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
    z-index: 1001;
}

@media (min-width: 768px) {
    .mobile-menu-toggle {
        display: none;
    }
}

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

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

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

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

.mobile-menu-toggle:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: 4px;
}

/* Mobile Menu */
@media (max-width: 767px) {
    .nav-links.mobile-open {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background-color: var(--color-bg);
        border-bottom: 1px solid var(--color-border);
        padding: var(--spacing-lg);
        gap: var(--spacing-md);
        box-shadow: 0 4px 12px var(--color-shadow-light);
    }
}

/* ============================================
   Buttons
   ============================================ */

.btn {
    display: inline-block;
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
    font-weight: 500;
    text-align: center;
    border-radius: var(--border-radius-pill);
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-family: var(--font-family);
    text-decoration: none;
}

.btn:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.btn-primary {
    background-color: var(--color-primary);
    color: white;
    box-shadow: 0 2px 8px var(--color-shadow-light);
}

.btn-primary:hover {
    background-color: var(--color-primary-hover);
    box-shadow: 0 4px 12px var(--color-shadow);
    transform: translateY(-1px);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-primary);
    border: 1.5px solid var(--color-primary);
}

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

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

/* ============================================
   App Store Badge
   ============================================ */

.app-store-badge-link {
    display: inline-block;
    text-decoration: none;
    transition: var(--transition);
    line-height: 0;
}

.app-store-badge-link:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 4px;
    border-radius: 8px;
}

.app-store-badge {
    height: 40px;
    width: auto;
    display: block;
    transition: var(--transition);
}

.app-store-badge:hover {
    opacity: 0.8;
    transform: translateY(-1px);
}

.app-store-badge-large {
    height: 50px;
}

@media (min-width: 768px) {
    .app-store-badge-large {
        height: 60px;
    }
}

/* Nav badge sizing - handled above with .app-store-badge-nav */

/* ============================================
   Hero Section
   ============================================ */

.hero {
    padding: var(--spacing-2xl) 0;
    background: linear-gradient(to bottom, var(--color-bg), var(--color-bg-light));
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

@media (min-width: 968px) {
    .hero-container {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-2xl);
    }
}

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

@media (min-width: 968px) {
    .hero-content {
        text-align: left;
    }
}

.hero-title {
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.hero-subtitle {
    font-size: 1.25rem;
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-light);
}

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

@media (min-width: 480px) {
    .hero-buttons {
        flex-direction: row;
        justify-content: center;
        align-items: center;
    }
}

@media (min-width: 968px) {
    .hero-buttons {
        justify-content: flex-start;
    }
}

.hero-trust {
    font-size: 0.95rem;
    color: var(--color-text-light);
    font-style: italic;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-screenshot {
    width: 100%;
    max-width: 350px;
    height: auto;
    aspect-ratio: 9 / 19.5;
    object-fit: contain;
    display: block;
    border-radius: var(--border-radius-lg);
}

/* ============================================
   Section Styles
   ============================================ */

section {
    padding: var(--spacing-2xl) 0;
}

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

.section-intro {
    text-align: center;
    font-size: 1.15rem;
    max-width: 700px;
    margin: 0 auto var(--spacing-2xl);
    color: var(--color-text-light);
}

/* ============================================
   Problem Section
   ============================================ */

.problem-section {
    background-color: var(--color-bg-section);
}

.problem-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

@media (min-width: 768px) {
    .problem-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.problem-card {
    background-color: var(--color-bg);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: 0 2px 8px var(--color-shadow-light);
    text-align: center;
    transition: var(--transition);
}

.problem-card:hover {
    box-shadow: 0 4px 16px var(--color-shadow);
    transform: translateY(-2px);
}

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

.problem-card h3 {
    margin-bottom: var(--spacing-sm);
    font-size: 1.5rem;
}

.problem-card p {
    font-size: 1rem;
    margin-bottom: 0;
}

/* ============================================
   How It Works Section
   ============================================ */

.how-it-works-section {
    background-color: var(--color-bg);
}

.steps-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

@media (min-width: 768px) {
    .steps-container {
        gap: var(--spacing-2xl);
    }
}

.step {
    display: flex;
    gap: var(--spacing-lg);
    align-items: flex-start;
}

.step-number {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    box-shadow: 0 4px 12px var(--color-shadow-light);
}

.step-content h3 {
    margin-bottom: var(--spacing-sm);
    font-size: 1.75rem;
}

.step-content p {
    font-size: 1.1rem;
    margin-bottom: 0;
}

/* ============================================
   Features Section
   ============================================ */

.features-section {
    background-color: var(--color-bg-section);
}

.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

@media (min-width: 768px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.feature-card {
    background-color: var(--color-bg);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: 0 2px 8px var(--color-shadow-light);
    transition: var(--transition);
}

.feature-card:hover {
    box-shadow: 0 4px 16px var(--color-shadow);
    transform: translateY(-2px);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

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

.feature-card p {
    font-size: 1rem;
    margin-bottom: 0;
}

/* ============================================
   Screenshots Section
   ============================================ */

.screenshots-section {
    background-color: var(--color-bg);
}

.screenshots-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

@media (min-width: 768px) {
    .screenshots-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.screenshot-item {
    margin: 0;
    text-align: center;
}

.screenshot-img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    aspect-ratio: 9 / 19.5;
    object-fit: contain;
    display: block;
    margin-bottom: var(--spacing-sm);
}

.screenshot-item figcaption {
    font-size: 0.9rem;
    color: var(--color-text-light);
    font-style: italic;
}

/* ============================================
   Testimonials Section
   ============================================ */

.testimonials-section {
    background-color: var(--color-bg-section);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

@media (min-width: 768px) {
    .testimonials-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.testimonial-card {
    background-color: var(--color-bg);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: 0 2px 8px var(--color-shadow-light);
}

.testimonial-text {
    font-size: 1.1rem;
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
    font-style: italic;
}

.testimonial-author {
    font-size: 0.95rem;
    color: var(--color-text-light);
    font-weight: 500;
    margin-bottom: 0;
}

.testimonial-note {
    text-align: center;
    font-size: 0.85rem;
    color: var(--color-text-light);
    margin-top: var(--spacing-xl);
    margin-bottom: 0;
}

/* ============================================
   FAQ Section
   ============================================ */

.faq-section {
    background-color: var(--color-bg);
}

.faq-list {
    max-width: 800px;
    margin: var(--spacing-xl) auto 0;
}

.faq-item {
    border-bottom: 1px solid var(--color-border);
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg) 0;
    background: none;
    border: none;
    text-align: left;
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--color-text);
    cursor: pointer;
    font-family: var(--font-family);
    transition: var(--transition);
}

.faq-question:hover {
    color: var(--color-primary);
}

.faq-question:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: 4px;
}

.faq-icon {
    font-size: 1.5rem;
    font-weight: 300;
    color: var(--color-primary);
    transition: var(--transition);
    flex-shrink: 0;
    margin-left: var(--spacing-md);
}

.faq-question[aria-expanded="true"] .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    padding: 0;
}

.faq-question[aria-expanded="true"] + .faq-answer {
    max-height: 500px;
    padding-bottom: var(--spacing-lg);
}

.faq-answer p {
    font-size: 1rem;
    line-height: 1.7;
    margin-bottom: 0;
    color: var(--color-text-light);
}

.faq-answer a {
    color: var(--color-primary);
    text-decoration: underline;
}

/* ============================================
   CTA Section
   ============================================ */

.cta-section {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: white;
    text-align: center;
    padding: var(--spacing-2xl) 0;
}

.cta-title {
    color: white;
    margin-bottom: var(--spacing-md);
}

.cta-subtitle {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
    color: rgba(255, 255, 255, 0.9);
}

.cta-buttons {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

@media (min-width: 480px) {
    .cta-buttons {
        flex-direction: row;
        justify-content: center;
    }
}

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

.cta-section .btn-primary:hover {
    background-color: rgba(255, 255, 255, 0.95);
    color: var(--color-primary-hover);
}

.cta-section .app-store-badge-link {
    display: inline-block;
}

.cta-section .app-store-badge:hover {
    opacity: 0.9;
}

.download-cta {
    display: inline-block;
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
    font-weight: 500;
    text-align: center;
    border-radius: var(--border-radius-pill);
    background-color: rgba(255, 255, 255, 0.2);
    color: white;
    border: 1.5px solid rgba(255, 255, 255, 0.5);
    transition: var(--transition);
    text-decoration: none;
    font-family: var(--font-family);
}

.download-cta:hover {
    background-color: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.7);
    transform: translateY(-1px);
}

.download-cta:focus {
    outline: 2px solid white;
    outline-offset: 2px;
}

/* ============================================
   Footer
   ============================================ */

.footer {
    background-color: var(--color-bg-section);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

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

@media (min-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
    text-decoration: none;
    display: block;
    margin-bottom: var(--spacing-sm);
}

.footer-copyright {
    font-size: 0.9rem;
    color: var(--color-text-light);
    margin-bottom: 0;
}

.footer-link-group h4 {
    font-size: 1rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.footer-link-group ul {
    list-style: none;
}

.footer-link-group li {
    margin-bottom: var(--spacing-xs);
}

.footer-link-group a {
    color: var(--color-text-light);
    font-size: 0.95rem;
    transition: var(--transition);
}

.footer-link-group a:hover {
    color: var(--color-primary);
}

.footer-disclaimer {
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    text-align: center;
}

.footer-disclaimer p {
    font-size: 0.85rem;
    color: var(--color-text-light);
    margin-bottom: 0;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* ============================================
   Inner Pages Styles
   ============================================ */

.page-header {
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
    background-color: var(--color-bg-section);
    text-align: center;
}

.page-header h1 {
    margin-bottom: var(--spacing-sm);
}

.page-content {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-2xl) var(--spacing-md);
}

.page-content h2 {
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
    font-size: 2rem;
}

.page-content h3 {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    font-size: 1.5rem;
}

.page-content p {
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.page-content ul, .page-content ol {
    margin-left: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    color: var(--color-text-light);
}

.page-content li {
    margin-bottom: var(--spacing-xs);
    line-height: 1.7;
}

.page-content a {
    color: var(--color-primary);
    text-decoration: underline;
}

.page-content a:hover {
    color: var(--color-primary-hover);
}

.contact-section {
    background-color: var(--color-bg-section);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    margin: var(--spacing-xl) 0;
    text-align: center;
}

.contact-section a {
    font-size: 1.1rem;
    font-weight: 500;
}

.faq-recap {
    background-color: var(--color-bg-section);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    margin: var(--spacing-xl) 0;
}

.faq-recap h3 {
    margin-top: 0;
    margin-bottom: var(--spacing-md);
}

.faq-recap ul {
    list-style: none;
    margin-left: 0;
}

.faq-recap li {
    margin-bottom: var(--spacing-sm);
}

.faq-recap a {
    color: var(--color-primary);
    text-decoration: underline;
}

.emergency-notice {
    background-color: #FFF3CD;
    border-left: 4px solid #FFC107;
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    margin: var(--spacing-xl) 0;
}

.emergency-notice p {
    margin-bottom: 0;
    color: #856404;
    font-weight: 500;
}

/* ============================================
   Accessibility
   ============================================ */

.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: white;
    padding: 8px;
    text-decoration: none;
    z-index: 100;
}

.skip-link:focus {
    top: 0;
}

/* Screen reader only */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}