/* ==========================================
   CSS Variables & Reset
   ========================================== */
:root {
    --primary-color: #FFC400;
    --primary-dark: #FFB300;
    --secondary-color: #6366F1;
    --text-primary: #1F2937;
    --text-secondary: #6B7280;
    --text-light: #9CA3AF;
    --bg-primary: #FFFFFF;
    --bg-secondary: #F9FAFB;
    --bg-tertiary: #F3F4F6;
    --border-color: #E5E7EB;
    --success: #10B981;
    --warning: #F59E0B;
    --error: #EF4444;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    overflow-x: hidden;
}

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

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

/* ==========================================
   Container & Layout
   ========================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ==========================================
   Navigation
   ========================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: var(--transition);
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.logo-icon {
    width: 40px;
    height: 40px;
    object-fit: contain;
}

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

.nav-links a {
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition);
    position: relative;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    border-radius: 3px;
    transition: var(--transition);
}

/* ==========================================
   Buttons
   ========================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    font-weight: 600;
    font-size: 1rem;
    border-radius: 12px;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--text-primary);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

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

.btn-outline {
    background: transparent;
    border: 2px solid var(--border-color);
    color: var(--text-primary);
}

.btn-outline:hover {
    border-color: var(--primary-color);
    background: rgba(255, 196, 0, 0.1);
}

/* ==========================================
   Hero Section
   ========================================== */
.hero {
    position: relative;
    padding: 150px 0 100px;
    overflow: hidden;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(99, 102, 241, 0.1);
    color: var(--secondary-color);
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

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

.hero-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 4rem;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    flex-wrap: wrap;
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-primary);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
    overflow: hidden;
}

.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.3;
    animation: blob 7s infinite;
}

.blob-1 {
    width: 300px;
    height: 300px;
    background: var(--primary-color);
    top: -150px;
    left: -150px;
}

.blob-2 {
    width: 400px;
    height: 400px;
    background: var(--secondary-color);
    top: 50%;
    right: -200px;
    animation-delay: 2s;
}

.blob-3 {
    width: 250px;
    height: 250px;
    background: #10B981;
    bottom: -125px;
    left: 50%;
    animation-delay: 4s;
}

@keyframes blob {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -50px) scale(1.1); }
    66% { transform: translate(-20px, 20px) scale(0.9); }
}

/* ==========================================
   Section Header
   ========================================== */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(255, 196, 0, 0.1);
    color: var(--primary-color);
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 700;
    letter-spacing: 1px;
    margin-bottom: 1rem;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    margin-bottom: 1rem;
}

.section-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ==========================================
   Features Section
   ========================================== */
.features {
    padding: 100px 0;
    background: var(--bg-secondary);
}

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

.feature-card {
    background: var(--bg-primary);
    padding: 2rem;
    border-radius: 20px;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

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

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

.feature-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.feature-description {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ==========================================
   How It Works Section
   ========================================== */
.how-it-works {
    padding: 100px 0;
}

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

.step-card {
    text-align: center;
    position: relative;
}

.step-number {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 800;
    margin: 0 auto 1.5rem;
    box-shadow: var(--shadow-lg);
}

.step-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.step-description {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ==========================================
   Pricing Section
   ========================================== */
.pricing {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 900px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--bg-primary);
    padding: 2.5rem;
    border-radius: 24px;
    border: 2px solid var(--border-color);
    transition: var(--transition);
    position: relative;
}

.pricing-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.pricing-card-featured {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
}

.pricing-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.pricing-badge-premium {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.pricing-title {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.pricing-price {
    margin-bottom: 2rem;
}

.price-amount {
    font-size: 3rem;
    font-weight: 800;
    color: var(--text-primary);
}

.price-period {
    color: var(--text-secondary);
    font-size: 1rem;
}

.pricing-features {
    margin-bottom: 2rem;
}

.pricing-features li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.pricing-features li:last-child {
    border-bottom: none;
}

.pricing-note {
    color: var(--text-secondary);
    font-size: 0.875rem;
    text-align: center;
    margin-bottom: 1rem;
    font-style: italic;
}

/* ==========================================
   Download Section
   ========================================== */
.download {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

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

.download-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    margin-bottom: 1rem;
}

.download-description {
    font-size: 1.25rem;
    margin-bottom: 3rem;
    opacity: 0.9;
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.store-button {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: white;
    color: var(--text-primary);
    padding: 1rem 2rem;
    border-radius: 12px;
    transition: var(--transition);
    min-width: 200px;
}

.store-button:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.store-icon {
    font-size: 2.5rem;
}

.store-icon svg {
    width: 40px;
    height: 40px;
}

.store-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.store-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.store-name {
    font-size: 1.125rem;
    font-weight: 700;
}

.download-note {
    text-align: center;
    margin-top: 2rem;
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.875rem;
}

/* ==========================================
   Privacy Policy Section
   ========================================== */
.privacy-policy {
    padding: 120px 0 80px;
}

.privacy-header {
    text-align: center;
    margin-bottom: 4rem;
}

.privacy-title {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 800;
    margin-bottom: 1rem;
}

.privacy-updated {
    color: var(--text-secondary);
    font-size: 1rem;
}

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

.privacy-section {
    margin-bottom: 3rem;
}

.privacy-section h2 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.privacy-section h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 1.5rem 0 0.75rem;
    color: var(--text-primary);
}

.privacy-section p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1rem;
}

.intro-text {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--text-secondary);
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: 12px;
    border-left: 4px solid var(--primary-color);
}

.privacy-section ul {
    list-style: disc;
    margin-left: 2rem;
    margin-bottom: 1rem;
}

.privacy-section ul li {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 0.5rem;
}

.privacy-section a {
    color: var(--secondary-color);
    text-decoration: underline;
}

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

.third-party-service {
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: 12px;
    margin: 1rem 0;
}

.privacy-note {
    background: linear-gradient(135deg, rgba(255, 196, 0, 0.1), rgba(99, 102, 241, 0.1));
    padding: 2rem;
    border-radius: 12px;
    border-left: 4px solid var(--primary-color);
}

.privacy-note p {
    margin: 0;
    color: var(--text-primary);
}

/* ==========================================
   Footer
   ========================================== */
.footer {
    background: var(--text-primary);
    color: white;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.footer-logo .logo-icon {
    width: 40px;
    height: 40px;
    object-fit: contain;
}

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

.footer-title {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.5);
}

/* ==========================================
   Responsive Design
   ========================================== */
@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 2rem;
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }

    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

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

    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    .hero {
        padding: 120px 0 80px;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

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

    .hero-stats {
        gap: 2rem;
    }

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

    .store-button {
        width: 100%;
        max-width: 300px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .stat-number {
        font-size: 1.5rem;
    }

    .privacy-section ul {
        margin-left: 1rem;
    }
}

/* ==========================================
   Animations & Utilities
   ========================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

/* Smooth scrolling for anchor links */
html {
    scroll-padding-top: 80px;
}

/* Selection color */
::selection {
    background: var(--primary-color);
    color: var(--text-primary);
}

::-moz-selection {
    background: var(--primary-color);
    color: var(--text-primary);
}