/* ===== CSS Variables ===== */
:root {
    /* Colors */
    --primary: #1E3A5F;
    --primary-light: #2B4A6F;
    --accent: #00D4FF;
    --accent-dark: #00A3CC;
    --text-primary: #0A1929;
    --text-secondary: #5A6C7D;
    --background: #FFFFFF;
    --background-secondary: #F8FAFC;
    --border: #E5E7EB;
    
    /* Typography */
    --font-primary: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'Space Mono', 'Courier New', monospace;
    
    /* Spacing */
    --section-padding: 120px;
    --container-padding: 24px;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.12);
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    
    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== Reset & Base ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    color: var(--text-primary);
    background: var(--background);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
    transition: var(--transition-base);
}

/* ===== Navigation ===== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

.nav-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 20px;
    color: var(--primary);
}

.logo-text {
    font-family: var(--font-mono);
    letter-spacing: -0.02em;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-secondary);
}

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

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    padding: 8px;
    cursor: pointer;
    background: none;
    border: none;
    z-index: 1001;
}

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

/* Hamburger Animation */
.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);
}

/* Mobile Menu Overlay */
.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.mobile-menu.active {
    opacity: 1;
    visibility: visible;
}

.mobile-menu-content {
    display: flex;
    flex-direction: column;
    gap: 24px;
    text-align: center;
}

.mobile-menu-link {
    font-size: 24px;
    font-weight: 600;
    color: var(--primary);
    text-decoration: none;
    padding: 16px;
    transition: all 0.3s ease;
    border-radius: var(--radius-md);
}

.mobile-menu-link:hover {
    background: var(--background-secondary);
    transform: translateX(8px);
}

/* ===== Buttons ===== */
.btn-primary {
    padding: 12px 24px;
    background: var(--primary);
    color: white;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 15px;
}

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

.btn-secondary {
    padding: 12px 24px;
    border: 2px solid var(--primary);
    color: var(--primary);
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 15px;
}

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

.btn-large {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 16px 32px;
    background: var(--primary);
    color: white;
    border-radius: var(--radius-md);
    font-weight: 700;
    font-size: 16px;
}

.btn-large:hover {
    background: var(--primary-light);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

/* ===== Hero Section ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(circle at 20% 30%, rgba(0, 212, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(30, 58, 95, 0.08) 0%, transparent 50%);
    z-index: -1;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    animation: fadeInUp 0.8s ease-out;
}

.hero-badge {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(0, 212, 255, 0.1);
    color: var(--accent-dark);
    border-radius: 100px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 24px;
}

.hero-title {
    font-size: clamp(48px, 8vw, 64px);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.highlight {
    background: linear-gradient(135deg, var(--accent) 0%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 20px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 40px;
    max-width: 540px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    gap: 48px;
    padding-top: 32px;
    border-top: 1px solid var(--border);
}

.stat-number {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary);
    font-family: var(--font-mono);
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 4px;
}

/* Hero Visual */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.phone-mockup {
    position: relative;
    z-index: 2;
    animation: float 3s ease-in-out infinite;
}

.phone-frame {
    width: 300px;
    padding: 12px;
    background: var(--primary);
    border-radius: 32px;
    box-shadow: var(--shadow-lg);
}

.phone-screen {
    width: 100%;
    border-radius: 20px;
}

.phone-shadow {
    position: absolute;
    bottom: -40px;
    left: 50%;
    transform: translateX(-50%);
    width: 200px;
    height: 40px;
    background: radial-gradient(ellipse, rgba(0, 0, 0, 0.2) 0%, transparent 70%);
    filter: blur(20px);
}

.floating-card {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background: white;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    animation: float 3s ease-in-out infinite;
}

.floating-card svg {
    flex-shrink: 0;
}

.card-1 {
    top: 10%;
    left: -10%;
    animation-delay: -1s;
}

.card-2 {
    bottom: 15%;
    right: -10%;
    animation-delay: -2s;
}

.card-title {
    font-weight: 600;
    font-size: 14px;
    color: var(--text-primary);
}

.card-subtitle {
    font-size: 12px;
    color: var(--text-secondary);
}

/* ===== Section Styling ===== */
section {
    padding: var(--section-padding) 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 80px;
}

.section-badge {
    display: inline-block;
    padding: 6px 16px;
    background: var(--background-secondary);
    color: var(--primary);
    border-radius: 100px;
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(36px, 6vw, 48px);
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ===== Features Section ===== */
.features {
    background: var(--background-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
}

.feature-card {
    padding: 40px;
    background: white;
    border-radius: var(--radius-lg);
    transition: var(--transition-smooth);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 212, 255, 0.1);
    border-radius: var(--radius-md);
    color: var(--accent-dark);
    margin-bottom: 24px;
}

.feature-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
}

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

/* ===== How It Works ===== */
.steps {
    max-width: 1000px;
    margin: 0 auto;
}

.step {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    margin-bottom: 120px;
}

.step:last-child {
    margin-bottom: 0;
}

.step-reverse {
    direction: rtl;
}

.step-reverse > * {
    direction: ltr;
}

.step-image {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.step-image img {
    width: 100%;
    max-width: 300px;
    margin: 0 auto;
}

.step-number {
    font-size: 72px;
    font-weight: 700;
    color: rgba(0, 212, 255, 0.15);
    font-family: var(--font-mono);
    line-height: 1;
    margin-bottom: 16px;
}

.step-title {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: -0.01em;
}

.step-description {
    font-size: 18px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ===== Pricing ===== */
.pricing {
    background: var(--background-secondary);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
    max-width: 900px;
    margin: 0 auto;
}

.pricing-card {
    position: relative;
    padding: 48px;
    background: white;
    border-radius: var(--radius-lg);
    border: 2px solid var(--border);
    transition: var(--transition-smooth);
}

.pricing-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

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

.pricing-badge {
    position: absolute;
    top: -16px;
    left: 50%;
    transform: translateX(-50%);
    padding: 6px 20px;
    background: var(--primary);
    color: white;
    border-radius: 100px;
    font-size: 13px;
    font-weight: 600;
}

.pricing-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 16px;
}

.pricing-price {
    margin-bottom: 32px;
}

.price-amount {
    font-size: 48px;
    font-weight: 700;
    font-family: var(--font-mono);
}

.price-period {
    font-size: 18px;
    color: var(--text-secondary);
}

.pricing-features {
    list-style: none;
    margin-bottom: 32px;
}

.pricing-features li {
    padding: 12px 0;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border);
}

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

.btn-pricing {
    width: 100%;
    padding: 16px;
    background: var(--background-secondary);
    color: var(--primary);
    border-radius: var(--radius-md);
    font-weight: 700;
    font-size: 16px;
}

.btn-pricing:hover {
    background: var(--background);
}

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

.btn-pricing-primary:hover {
    background: var(--primary-light);
}

/* ===== Download CTA ===== */
.download-cta {
    background: 
        linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: white;
    text-align: center;
}

.download-title {
    font-size: clamp(36px, 6vw, 48px);
    font-weight: 700;
    margin-bottom: 16px;
}

.download-subtitle {
    font-size: 20px;
    opacity: 0.9;
    margin-bottom: 48px;
}

.download-buttons {
    display: flex;
    gap: 24px;
    justify-content: center;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.download-btn {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 32px;
    background: white;
    color: var(--primary);
    border-radius: var(--radius-md);
    transition: var(--transition-base);
    text-decoration: none;
}

.download-btn:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.2);
}

.download-btn-secondary {
    background: transparent;
    border: 2px solid white;
    color: white;
}

.download-btn-small {
    font-size: 12px;
    opacity: 0.7;
    text-align: left;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.download-btn-large {
    font-size: 18px;
    font-weight: 700;
    text-align: left;
}

.download-note {
    opacity: 0.8;
    font-size: 14px;
}

.download-note a {
    color: var(--accent);
    text-decoration: underline;
}

/* ===== Footer ===== */
.footer {
    background: var(--text-primary);
    color: white;
    padding: 80px 0 32px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 80px;
    margin-bottom: 48px;
}

.footer-brand .logo {
    color: white;
    margin-bottom: 16px;
}

.footer-tagline {
    opacity: 0.7;
    line-height: 1.6;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.footer-column h4 {
    font-size: 14px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 16px;
    opacity: 0.5;
}

.footer-column a {
    display: block;
    opacity: 0.7;
    margin-bottom: 12px;
    font-size: 14px;
}

.footer-column a:hover {
    opacity: 1;
}

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    opacity: 0.5;
    font-size: 14px;
}

/* ===== Animations ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

/* ===== Responsive Design ===== */
@media (max-width: 968px) {
    :root {
        --section-padding: 80px;
    }
    
    .nav-links {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: 60px;
        text-align: center;
    }
    
    .hero-text {
        order: 1;
    }
    
    .hero-visual {
        order: 2;
    }
    
    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .floating-card {
        display: none;
    }
    
    .step {
        grid-template-columns: 1fr;
        gap: 40px;
        margin-bottom: 80px;
        text-align: center;
    }
    
    .step-reverse {
        direction: ltr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .hero-title {
        font-size: 36px;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 24px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .download-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
}