/* ================================
   Design System & CSS Variables
   ================================ */
:root {
    /* Colors - Professional Blue/Gray Palette */
    --color-primary: #2563eb;
    --color-primary-dark: #1e40af;
    --color-primary-light: #3b82f6;
    --color-secondary: #475569;
    --color-accent: #0ea5e9;

    --color-text-primary: #0f172a;
    --color-text-secondary: #475569;
    --color-text-light: #64748b;

    --color-bg-primary: #ffffff;
    --color-bg-secondary: #f8fafc;
    --color-bg-tertiary: #f1f5f9;

    --color-border: #e2e8f0;
    --color-border-light: #f1f5f9;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #2563eb 0%, #3b82f6 100%);
    --gradient-hero: linear-gradient(135deg, #1e40af 0%, #2563eb 50%, #3b82f6 100%);
    --gradient-overlay: linear-gradient(135deg, rgba(37, 99, 235, 0.95) 0%, rgba(59, 130, 246, 0.9) 100%);

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-card: 0 4px 20px rgba(37, 99, 235, 0.08);

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ================================
   Typography
   ================================ */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 600;
    line-height: 1.2;
    color: var(--color-text-primary);
}

h1 {
    font-size: var(--font-size-5xl);
}

h2 {
    font-size: var(--font-size-4xl);
}

h3 {
    font-size: var(--font-size-2xl);
}

h4 {
    font-size: var(--font-size-xl);
}

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

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

a:hover {
    color: var(--color-primary-dark);
}

/* ================================
   Utility Classes
   ================================ */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

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

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-primary);
    transition: transform var(--transition-fast);
}

.logo:hover {
    transform: translateY(-2px);
}

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

.nav-link {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width var(--transition-base);
}

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

.nav-link:hover::after {
    width: 100%;
}

.nav-link-cta {
    padding: 0.625rem 1.5rem;
    background: var(--gradient-primary);
    color: white;
    border-radius: var(--radius-lg);
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
}

.nav-link-cta:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

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

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

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-hero);
    z-index: -1;
}

.hero-background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
    animation: float 20s ease-in-out infinite;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-20px);
    }
}

.hero-content {
    text-align: center;
    color: white;
    max-width: 900px;
    padding: var(--spacing-2xl) 0;
}

.hero-title {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.hero-title-main {
    font-size: var(--font-size-5xl);
    font-weight: 700;
    line-height: 1.1;
    animation: fadeInUp 0.8s ease;
}

.hero-title-sub {
    font-size: var(--font-size-3xl);
    font-weight: 400;
    opacity: 0.95;
    animation: fadeInUp 1s ease;
}

.hero-description {
    font-size: var(--font-size-lg);
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
    opacity: 0.9;
    color: white;
    animation: fadeInUp 1.2s ease;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1.4s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    color: white;
    font-size: var(--font-size-sm);
    opacity: 0.8;
    animation: bounce 2s ease-in-out infinite;
}

.scroll-arrow {
    width: 20px;
    height: 20px;
    border-right: 2px solid white;
    border-bottom: 2px solid white;
    transform: rotate(45deg);
}

@keyframes bounce {

    0%,
    100% {
        transform: translateX(-50%) translateY(0);
    }

    50% {
        transform: translateX(-50%) translateY(10px);
    }
}

/* ================================
   Buttons
   ================================ */
.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    font-size: var(--font-size-base);
    font-weight: 500;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    border: none;
    text-align: center;
}

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

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

.btn-secondary {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 2px solid white;
    backdrop-filter: blur(10px);
}

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

.btn-full {
    width: 100%;
}

/* ================================
   Section Styles
   ================================ */
section {
    padding: var(--spacing-3xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-label {
    display: inline-block;
    padding: 0.5rem 1.25rem;
    background: var(--color-bg-tertiary);
    color: var(--color-primary);
    border-radius: var(--radius-xl);
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-md);
}

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

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

/* ================================
   About Section
   ================================ */
.about {
    background: var(--color-bg-secondary);
}

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

.about-card {
    background: white;
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-card);
    transition: all var(--transition-base);
}

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

.about-icon {
    width: 64px;
    height: 64px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    color: white;
}

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

.about-card p {
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ================================
   Services Section
   ================================ */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: var(--spacing-lg);
}

.service-card {
    padding: var(--spacing-xl);
    background: white;
    border-radius: var(--radius-xl);
    border: 2px solid var(--color-border-light);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 0;
    background: var(--gradient-primary);
    transition: height var(--transition-base);
}

.service-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-lg);
}

.service-card:hover::before {
    height: 100%;
}

.service-number {
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    opacity: 0.6;
}

.service-card h3 {
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-xl);
}

.service-card p {
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ================================
   Product Section
   ================================ */
.product {
    background: var(--color-bg-secondary);
}

.product-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.product-info h3 {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-md);
}

.product-lead {
    font-size: var(--font-size-lg);
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
}

.product-features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.feature-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: white;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.feature-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(8px);
}

.feature-icon {
    width: 48px;
    height: 48px;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--color-primary);
}

.feature-text h4 {
    margin-bottom: 0.25rem;
    font-size: var(--font-size-base);
}

.feature-text p {
    font-size: var(--font-size-sm);
    margin: 0;
}

.product-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.phone-mockup {
    position: relative;
    animation: floatPhone 6s ease-in-out infinite;
}

@keyframes floatPhone {

    0%,
    100% {
        transform: translateY(0px) rotate(0deg);
    }

    50% {
        transform: translateY(-20px) rotate(2deg);
    }
}

.phone-frame {
    width: 300px;
    height: 600px;
    background: linear-gradient(145deg, #e2e8f0, #cbd5e1);
    border-radius: 40px;
    padding: 12px;
    box-shadow:
        0 20px 60px rgba(0, 0, 0, 0.3),
        inset 0 0 0 2px rgba(255, 255, 255, 0.5);
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: white;
    border-radius: 32px;
    overflow: hidden;
    box-shadow: inset 0 2px 10px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
}

.app-screenshot {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 28px;
}

/* ================================
   Contact Section
   ================================ */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-3xl);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.info-card {
    padding: var(--spacing-lg);
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--color-primary);
}

.info-card h3 {
    font-size: var(--font-size-xl);
    margin-bottom: 0.5rem;
}

.info-card h4 {
    font-size: var(--font-size-base);
    margin-bottom: 0.25rem;
    color: var(--color-text-primary);
}

.info-card p,
.info-card a {
    font-size: var(--font-size-base);
    margin: 0;
}

.info-card:first-child {
    background: var(--gradient-primary);
    color: white;
    border-left: none;
}

.info-card:first-child h3,
.info-card:first-child p {
    color: white;
}

.info-card {
    display: flex;
    gap: var(--spacing-md);
    align-items: start;
}

.info-icon {
    width: 48px;
    height: 48px;
    background: var(--color-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
}

.info-card:first-child .info-icon {
    display: none;
}

/* ================================
   Contact Form
   ================================ */
.contact-form-wrapper {
    background: var(--color-bg-secondary);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
}

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

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 500;
    color: var(--color-text-primary);
    font-size: var(--font-size-sm);
}

.form-group input,
.form-group textarea {
    padding: 0.875rem;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    transition: all var(--transition-base);
    background: white;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group textarea {
    resize: vertical;
}

/* ================================
   Footer
   ================================ */
.footer {
    background: var(--color-text-primary);
    color: white;
    padding: var(--spacing-2xl) 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-brand .logo {
    color: white;
    margin-bottom: 0.5rem;
    display: block;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--font-size-sm);
    margin: 0;
}

.footer-copyright p {
    color: rgba(255, 255, 255, 0.6);
    font-size: var(--font-size-sm);
    margin: 0;
}

/* ================================
   Responsive Design
   ================================ */
@media (max-width: 1024px) {
    .product-showcase {
        grid-template-columns: 1fr;
    }

    .phone-mockup {
        margin-top: var(--spacing-2xl);
    }
}

@media (max-width: 768px) {
    :root {
        --font-size-5xl: 2.25rem;
        --font-size-4xl: 1.875rem;
        --font-size-3xl: 1.5rem;
    }

    .nav-links {
        display: none;
    }

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

    .hero-title-main {
        font-size: var(--font-size-4xl);
    }

    .hero-title-sub {
        font-size: var(--font-size-2xl);
    }

    .hero-description {
        font-size: var(--font-size-base);
    }

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

    .btn {
        width: 100%;
    }

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

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

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

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    section {
        padding: var(--spacing-2xl) 0;
    }

    .section-header {
        margin-bottom: var(--spacing-2xl);
    }
}

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

    .phone-frame {
        width: 250px;
        height: 500px;
    }

    .app-services {
        grid-template-columns: 1fr;
    }
}