/* ===========================
   Global Styles
   =========================== */

:root {
    /* Color Palette */
    --primary-color: #E91E63;
    --primary-dark: #C2185B;
    --primary-light: #F8BBD0;
    --secondary-color: #9C27B0;
    --accent-color: #FF4081;

    /* Neutrals */
    --bg-color: #FFFFFF;
    --bg-secondary: #F9F9F9;
    --bg-tertiary: #F3F3F3;
    --text-primary: #212121;
    --text-secondary: #757575;
    --text-light: #9E9E9E;
    --border-color: #E0E0E0;

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    --font-size-base: 16px;
    --line-height-base: 1.6;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

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

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

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

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

ul {
    list-style: none;
}

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

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    margin-bottom: var(--spacing-md);
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: var(--spacing-md);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin-bottom: var(--spacing-sm);
}

h4 {
    font-size: clamp(1.25rem, 2vw, 1.5rem);
    margin-bottom: var(--spacing-sm);
}

p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
}

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

.section-subtitle {
    text-align: center;
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

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

.btn-primary,
.btn-primary-large,
.btn-nav {
    display: inline-block;
    padding: 0.875rem 2rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    font-weight: 600;
    border-radius: var(--radius-full);
    transition: var(--transition-base);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover,
.btn-primary-large:hover,
.btn-nav:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-primary-large {
    padding: 1.25rem 3rem;
    font-size: 1.125rem;
}

.btn-nav {
    padding: 0.625rem 1.5rem;
    font-size: 0.9375rem;
}

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

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
}

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

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

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

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.nav-menu a {
    font-weight: 500;
    color: var(--text-primary);
}

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

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

.hero {
    padding-top: 80px;
    padding-bottom: 0;
    background: #ffebed;
    min-height: calc(768px + 80px);
}

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

.hero-text h1 {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

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

.hero-buttons img {
    height: 50px;
    width: auto;
}

.hero-features {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.hero-feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 500;
    color: var(--text-primary);
}

.checkmark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    font-size: 0.875rem;
}

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

.hero-image img {
    max-width: 500px;
    max-height: 768px;
    position: relative;
}

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

.features {
    padding: var(--spacing-xl) 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.feature-card {
    background: white;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
    border: 1px solid var(--border-color);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

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

.feature-card h3 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

/* ===========================
   About Section
   =========================== */

.about {
    padding: var(--spacing-xl) 0;
    background: var(--bg-secondary);
}

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

.about-text h2 {
    color: var(--text-primary);
}

.about-text > p {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
}

.about-benefits {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.benefit h4 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

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

.about-image img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

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

.app-screenshots {
    padding: var(--spacing-xl) 0;
    background: var(--bg-secondary);
}

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

.screenshot-card {
    background: white;
    border-radius: var(--radius-md);
    padding: var(--spacing-sm);
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
    text-align: center;
}

.screenshot-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.screenshot-card img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-sm);
}

.screenshot-card h3 {
    color: var(--text-primary);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xs);
}

.screenshot-card p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

/* ===========================
   Perfect For Section
   =========================== */

.perfect-for {
    padding: var(--spacing-xl) 0;
}

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

.use-case {
    background: linear-gradient(135deg, var(--primary-light), #E1BEE7);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    text-align: center;
    font-weight: 600;
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
}

.use-case:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ===========================
   Privacy Section
   =========================== */

.privacy-section {
    padding: var(--spacing-xl) 0;
    background: linear-gradient(135deg, #F3E5F5, #FCE4EC);
}

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

.privacy-lead {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

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

.privacy-feature {
    background: white;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
}

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

.privacy-feature h4 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.privacy-feature p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

.privacy-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.privacy-link {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 1.125rem;
}

.privacy-link:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

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

.cta {
    padding: var(--spacing-xl) 0;
    text-align: center;
    background: white;
}

.cta h2 {
    margin-bottom: var(--spacing-sm);
}

.cta p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.cta img {
    margin: 0 auto;
    height: 60px;
    width: auto;
}

.cta-note {
    margin-top: var(--spacing-md);
    font-size: 0.9375rem;
    color: var(--text-light);
}

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

.support {
    padding: var(--spacing-xl) 0;
    background: var(--bg-secondary);
}

.support-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.support-card {
    background: white;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    text-align: center;
}

.support-card h4 {
    margin-bottom: var(--spacing-xs);
}

.support-card p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    font-size: 0.9375rem;
}

.support-card a {
    color: var(--primary-color);
    font-weight: 600;
}

.support-card a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* ===========================
   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-section h4 {
    color: white;
    margin-bottom: var(--spacing-sm);
    font-size: 1.125rem;
}

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

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

.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    transition: var(--transition-fast);
}

.footer-section a:hover {
    color: white;
    padding-left: 4px;
}

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

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-xs);
}

.disclaimer {
    font-size: 0.8125rem !important;
    font-style: italic;
}

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

@media (max-width: 968px) {
    .hero-content,
    .about-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-features {
        justify-content: center;
    }

    .nav-menu {
        gap: var(--spacing-sm);
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
    }

    .nav-menu {
        display: none;
    }

    .hero {
        padding: calc(60px + var(--spacing-md)) 0 var(--spacing-md);
    }

    .hero-image img {
        max-width: 350px;
    }

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

    .privacy-links {
        flex-direction: column;
        align-items: center;
    }
}

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

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

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

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

/* ===========================
   Utilities
   =========================== */

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

.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }

.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }