/* ===== RESET AND BASE STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
    overflow-x: hidden;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.5rem;
}

p {
    margin-bottom: 1rem;
    color: #666;
}

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

a:hover {
    color: #6a4fa3;
}

/* ===== LAYOUT ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ===== HEADER ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: all 0.3s ease;
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-img {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    font-size: 14px;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 600;
    color: #333;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: #007AFF;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
    border-radius: 2px;
}

/* ===== HERO SECTION ===== */
.hero {
    flex: 1;
    padding: 80px 0 60px;
    background: var(--background-color);
    color: var(--text-color);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    min-height: 80vh;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('../images/hero-bg.jpg') center/cover;
    opacity: 0.1;
    z-index: 1;
}

.hero-container {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 2rem;
    width: 100%;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
    color: var(--text-color);
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 1.75rem;
    color: var(--text-light);
}

.hero-cta {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

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

.phone-mockup {
    max-width: 300px;
    height: auto;
    border-radius: 20px;
    background: none;
    border: none;
    padding: 0;
    box-shadow: none;
    filter: none;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    text-align: center;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    text-decoration: none;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
    box-shadow: 0 4px 15px rgba(139, 106, 199, 0.3);
}

.btn-primary:hover {
    background: #6a4fa3;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(139, 106, 199, 0.4);
    color: white;
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
    color: white;
}

/* ===== SECTIONS ===== */
section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
    color: var(--primary-color);
}

/* ===== FEATURES SECTION ===== */
.features {
    background: #f8f9fa;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-title {
    color: #333;
    margin-bottom: 1rem;
}

.feature-description {
    color: #666;
    line-height: 1.6;
}

/* ===== SCREENSHOTS SECTION ===== */
.screenshots-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

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

.screenshot-img {
    max-width: 100%;
    height: auto;
    border-radius: 16px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
    transition: transform 0.3s ease;
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    padding: 20px;
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #666;
    font-style: italic;
}

.screenshot-img:hover {
    transform: scale(1.05);
}

.screenshot-caption {
    margin-top: 1rem;
    font-weight: 500;
    color: #333;
}

/* ===== DOWNLOAD SECTION ===== */
.download {
    background: var(--primary-color);
    color: white;
    text-align: center;
}

.download-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    color: rgba(255, 255, 255, 0.9);
}

.download-buttons {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.app-store-btn {
    background: none;
    padding: 0;
    border-radius: 0;
    border: none;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.app-store-btn:hover {
    background: none;
    border: none;
    transform: translateY(-2px);
    color: inherit;
}

.app-store-btn img {
    height: 60px;
    transition: transform 0.3s ease;
}

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

.download-info {
    margin-top: 1rem;
}

.download-version,
.download-size {
    color: rgba(255, 255, 255, 0.8);
    margin: 0.25rem 0;
}

/* ===== ABOUT SECTION ===== */
.about {
    background: #f8f9fa;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-description {
    font-size: 1.125rem;
    line-height: 1.7;
    margin-bottom: 3rem;
    color: #666;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

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

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: #666;
    font-weight: 500;
}

/* ===== FOOTER ===== */
.footer {
    background: var(--background-color);
    color: var(--text-color);
    padding: 60px 0 20px;
    margin-top: auto;
    text-align: center;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--text-light);
    transition: color 0.3s ease;
    text-decoration: none;
}

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

.footer-copyright {
    color: var(--text-light);
    border-top: 1px solid var(--border-color);
    padding-top: 1.5rem;
}

.footer-copyright p {
    margin: 0;
}

/* ===== LEGAL PAGES ===== */
.legal-content {
    padding: 120px 0 80px;
    background: var(--background-color);
    min-height: 100vh;
}

.legal-header {
    text-align: center;
    margin-bottom: 3rem;
}

.legal-title {
    color: var(--text-color);
    margin-bottom: 0.5rem;
}

.legal-date {
    color: var(--text-light);
    font-style: italic;
}

.legal-body {
    background: var(--white);
    padding: 3rem;
    border-radius: 16px;
    box-shadow: 0 4px 20px var(--shadow-color);
    max-width: 800px;
    margin: 0 auto;
}

.legal-section {
    margin-bottom: 2rem;
}

.legal-section h2 {
    color: var(--text-color);
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 0.5rem;
    margin-bottom: 1rem;
}

.legal-section h3 {
    color: var(--text-color);
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}

.legal-section ul {
    margin-left: 2rem;
    margin-bottom: 1rem;
}

.legal-section li {
    margin-bottom: 0.5rem;
    color: var(--text-light);
}

.contact-info {
    background: var(--background-color);
    padding: 1.5rem;
    border-radius: 8px;
    margin-top: 1rem;
}

.contact-info p {
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

/* ===== UTILITY CLASSES ===== */
.text-center {
    text-align: center;
}

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

/* Gradients and other blue backgrounds */
.download {
    background: var(--primary-color);
    color: white;
    text-align: center;
}

.feature-card::before {
    background: var(--primary-color);
}

.screenshot-caption::before {
    background: var(--primary-color);
}

.progress-fill {
    background: var(--primary-color);
}

/* Focus outline */
@media (prefers-reduced-motion: no-preference) {
    .btn:focus,
    .nav-link:focus,
    a:focus {
        outline: 2px solid var(--primary-color);
        outline-offset: 2px;
    }
}