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

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

:root {
    --primary-color: #2563eb;
    --secondary-color: #1e40af;
    --accent-color: #3b82f6;
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --background-light: #f9fafb;
    --background-white: #ffffff;
    --border-color: #e5e7eb;
    --success-color: #10b981;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--background-white);
}

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

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

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

/* ========================================
   Container & Layout
   ======================================== */

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

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

.navbar {
    background-color: var(--background-white);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-logo {
    width: 40px;
    height: 40px;
    border-radius: 8px;
}

.nav-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-dark);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    color: var(--text-light);
    font-weight: 500;
    padding: 0.5rem 0;
    border-bottom: 2px solid transparent;
    transition: all 0.3s ease;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

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

.nav-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--text-dark);
    margin: 3px 0;
    transition: 0.3s;
    border-radius: 2px;
}

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

.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero-image {
    max-width: 600px;
    margin: 0 auto 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
}

.hero h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.download-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.download-buttons.centered {
    margin: 2rem 0;
}

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

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

.btn-primary:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background-color: var(--background-white);
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

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

.btn-appstore,
.btn-playstore {
    padding: 0;
    background: none;
}

.store-badge {
    height: 50px;
    width: auto;
}

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

.features {
    padding: 4rem 0;
    background-color: var(--background-light);
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--text-dark);
}

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

.feature-card {
    background-color: var(--background-white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

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

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--text-dark);
}

.feature-card p {
    color: var(--text-light);
    margin-bottom: 1rem;
    flex-grow: 1;
}

.feature-screenshot {
    border: 1px solid #000000;
    border-radius: 8px;
    margin-top: auto;
}

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

.cta {
    background-color: var(--primary-color);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.cta h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.cta p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

/* ========================================
   Page Header
   ======================================== */

.page-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 3rem 0;
    text-align: center;
}

.page-header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.page-header p {
    font-size: 1.25rem;
    opacity: 0.95;
}

/* ========================================
   Content Sections
   ======================================== */

.content-section {
    padding: 4rem 0;
}

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

.content-wrapper h2 {
    font-size: 2rem;
    margin: 2rem 0 1rem;
    color: var(--text-dark);
}

.content-wrapper h3 {
    font-size: 1.5rem;
    margin: 1.5rem 0 0.75rem;
    color: var(--text-dark);
}

.content-wrapper p {
    color: var(--text-light);
    margin-bottom: 1rem;
    line-height: 1.8;
}

.content-wrapper ul,
.content-wrapper ol {
    margin-left: 2rem;
    margin-bottom: 1rem;
    color: var(--text-light);
}

.content-wrapper li {
    margin-bottom: 0.5rem;
    line-height: 1.8;
}

/* ========================================
   Placeholder Images
   ======================================== */

.placeholder-image {
    background-color: #f3f4f6;
    border: 2px dashed #d1d5db;
    border-radius: 8px;
    padding: 2rem;
    margin: 1.5rem 0;
    text-align: center;
}

.placeholder-image p {
    color: #6b7280;
    font-style: italic;
    margin: 0;
}

.placeholder-image.large {
    padding: 3rem;
    margin: 2rem 0;
}

/* ========================================
   Content with Screenshot Layout
   ======================================== */

.content-with-screenshot {
    display: flex;
    gap: 2rem;
    align-items: flex-start;
    margin: 2rem 0;
}

.content-text {
    flex: 2;
}

.content-screenshot {
    flex: 1;
    min-width: 250px;
}

.content-screenshot img {
    width: 100%;
    border: 1px solid #000000;
    border-radius: 8px;
    box-shadow: var(--shadow-md);
}

@media (max-width: 768px) {
    .content-with-screenshot {
        flex-direction: column;
    }
    
    .content-screenshot {
        width: 100%;
        max-width: 400px;
        margin: 0 auto;
    }
}

/* ========================================
   Boxes & Cards
   ======================================== */

.intro-box,
.cta-box {
    background-color: var(--background-light);
    padding: 2rem;
    border-radius: 12px;
    margin-bottom: 2rem;
    border-left: 4px solid var(--primary-color);
}

.cta-box {
    text-align: center;
    margin-top: 3rem;
}

.cta-box h3 {
    margin-top: 0;
}

/* ========================================
   Features List
   ======================================== */

.features-list {
    display: grid;
    gap: 2rem;
    margin: 2rem 0;
}

.feature-item {
    padding: 1.5rem;
    background-color: var(--background-light);
    border-radius: 8px;
}

.feature-item h3 {
    margin-top: 0;
    color: var(--primary-color);
}

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

.faq-wrapper {
    max-width: 900px;
}

.faq-category {
    margin-bottom: 3rem;
}

.faq-category h2 {
    color: var(--primary-color);
    border-bottom: 3px solid var(--primary-color);
    padding-bottom: 0.5rem;
    margin-bottom: 1.5rem;
}

.faq-item {
    background-color: var(--background-light);
    padding: 1.5rem;
    border-radius: 8px;
    margin-bottom: 1rem;
}

.faq-item h3 {
    margin-top: 0;
    color: var(--text-dark);
}

.faq-item p {
    margin-bottom: 0;
}

/* ========================================
   Guide Sections
   ======================================== */

.guide-section {
    margin: 3rem 0;
    padding: 2rem 0;
    border-top: 1px solid var(--border-color);
}

.field-list {
    background-color: var(--background-light);
    padding: 1.5rem 2rem;
    border-radius: 8px;
    margin: 1rem 0;
}

.field-list li {
    margin-bottom: 0.75rem;
}

.field-list strong {
    color: var(--text-dark);
}

.download-link {
    margin: 1.5rem 0;
}

.tips-section {
    margin: 3rem 0;
}

.tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.tip-card {
    background-color: var(--background-light);
    padding: 1.5rem;
    border-radius: 8px;
}

.tip-card h3 {
    color: var(--success-color);
    margin-top: 0;
}

.troubleshooting {
    margin: 3rem 0;
}

/* ========================================
   Support Section
   ======================================== */

.support-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.support-card {
    background-color: var(--background-light);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    transition: transform 0.3s ease;
}

.support-card:hover {
    transform: translateY(-5px);
}

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

.support-card h3 {
    margin: 1rem 0;
}

.support-card .btn {
    margin-top: 1rem;
}

.support-info {
    margin: 3rem 0;
}

.community-section {
    background-color: var(--background-light);
    padding: 2rem;
    border-radius: 12px;
    margin: 3rem 0;
    text-align: center;
}

/* ========================================
   Forms
   ======================================== */

.email-form {
    display: flex;
    gap: 0.5rem;
    max-width: 500px;
}

.email-form input[type="email"] {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
}

.email-form input[type="email"]:focus {
    outline: none;
    border-color: var(--primary-color);
}

.email-form button {
    padding: 0.75rem 1.5rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.email-form button:hover {
    background-color: var(--secondary-color);
}

.centered-form {
    margin: 2rem auto;
}

.contact-form-section {
    margin: 3rem 0;
    max-width: 600px;
}

.contact-form {
    background-color: var(--background-light);
    padding: 2rem;
    border-radius: 12px;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-dark);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group small {
    display: block;
    margin-top: 0.25rem;
    color: var(--text-light);
    font-size: 0.875rem;
}

.form-group textarea {
    resize: vertical;
}

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

footer {
    background-color: var(--text-dark);
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section {
    text-align: center;
}

.footer-section h4 {
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.footer-section p {
    opacity: 0.8;
    line-height: 1.8;
}

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

.footer-section li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: white;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.footer-section a:hover {
    opacity: 1;
    color: white;
}

.footer-section .email-form input {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
    color: white;
}

.footer-section .email-form input::placeholder {
    color: rgba(255, 255, 255, 0.6);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.8;
}

/* ========================================
   Responsive Design
   ======================================== */

@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--background-white);
        flex-direction: column;
        padding: 1rem;
        box-shadow: var(--shadow-md);
        gap: 0;
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-menu li {
        width: 100%;
    }

    .nav-menu a {
        display: block;
        padding: 1rem;
        border-bottom: none;
        border-left: 3px solid transparent;
    }

    .nav-menu a:hover,
    .nav-menu a.active {
        border-left-color: var(--primary-color);
        border-bottom-color: transparent;
    }

    .nav-toggle {
        display: flex;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .features h2,
    .cta h2,
    .page-header h1 {
        font-size: 1.75rem;
    }

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

    .download-buttons {
        flex-direction: column;
        align-items: center;
    }

    .email-form {
        flex-direction: column;
    }

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

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero {
        padding: 2rem 0;
    }

    .hero h1 {
        font-size: 1.5rem;
    }

    .features,
    .content-section,
    .cta {
        padding: 2rem 0;
    }

    .feature-card,
    .support-card {
        padding: 1.5rem;
    }

    .nav-title {
        font-size: 1rem;
    }
}