/* =====================================================
   Smart Systems - Modern Landing Page Styles
   ===================================================== */

/* CSS Variables */
:root {
    /* Colors */
    --primary-50: #eef2ff;
    --primary-100: #e0e7ff;
    --primary-200: #c7d2fe;
    --primary-300: #a5b4fc;
    --primary-400: #818cf8;
    --primary-500: #6366f1;
    --primary-600: #4f46e5;
    --primary-700: #4338ca;
    --primary-800: #3730a3;
    --primary-900: #312e81;

    --secondary-500: #8b5cf6;
    --secondary-600: #7c3aed;

    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;

    --success-500: #22c55e;
    --error-500: #ef4444;

    /* Typography */
    --font-sans: 'Inter', 'Noto Sans Georgian', system-ui, -apple-system, sans-serif;

    /* Spacing */
    --container-max: 1200px;
    --section-padding: 100px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);

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

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 24px;
    --radius-full: 9999px;
}

/* Test Mode Banner */
.test-mode-banner {
    background: linear-gradient(90deg, #f59e0b, #d97706);
    color: #fff;
    text-align: center;
    padding: 10px 20px;
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.5px;
}

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

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

body {
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--gray-700);
    background-color: #fff;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

ul, ol {
    list-style: none;
}

/* Container */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

/* =====================================================
   Typography
   ===================================================== */
h1, h2, h3, h4, h5, h6 {
    color: var(--gray-900);
    font-weight: 700;
    line-height: 1.2;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary-500), var(--secondary-500));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* =====================================================
   Buttons
   ===================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: var(--radius-lg);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-normal);
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-500), var(--secondary-500));
    color: #fff;
    box-shadow: 0 4px 14px 0 rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px 0 rgba(99, 102, 241, 0.5);
}

.btn-outline {
    background: transparent;
    color: var(--gray-700);
    border-color: var(--gray-300);
}

.btn-outline:hover {
    border-color: var(--primary-500);
    color: var(--primary-600);
    background: var(--primary-50);
}

.btn-white {
    background: #fff;
    color: var(--primary-600);
}

.btn-white:hover {
    background: var(--gray-100);
    transform: translateY(-2px);
}

.btn-outline-white {
    background: transparent;
    color: #fff;
    border-color: rgba(255, 255, 255, 0.3);
}

.btn-outline-white:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
}

.btn-lg {
    padding: 16px 32px;
    font-size: 1rem;
}

.btn-block {
    width: 100%;
}

.btn-nav {
    padding: 10px 20px;
    font-size: 0.875rem;
    color: #fff !important;
}

/* =====================================================
   Test Mode Banner
   ===================================================== */
.test-banner {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1001;
    padding: 10px 20px;
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: #fff;
    text-align: center;
    font-size: 0.875rem;
    font-weight: 600;
}

/* =====================================================
   Navigation
   ===================================================== */
.navbar {
    position: fixed;
    top: 40px;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: all var(--transition-normal);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
    padding: 12px 0;
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-900);
}

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

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

.nav-links a {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--gray-600);
    transition: color var(--transition-fast);
}

.nav-links a:hover {
    color: var(--primary-600);
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-toggle span {
    width: 24px;
    height: 2px;
    background: var(--gray-700);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

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

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

.mobile-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* =====================================================
   Hero Section
   ===================================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 160px 0 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: -1;
}

.hero-gradient {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--primary-50) 0%, #fff 50%, var(--primary-50) 100%);
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(99, 102, 241, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(99, 102, 241, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-content {
    max-width: 600px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px 6px 8px;
    background: rgba(99, 102, 241, 0.1);
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--primary-600);
    margin-bottom: 24px;
    animation: fadeInUp 0.6s ease;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--primary-500);
    border-radius: 50%;
    animation: pulse 2s ease infinite;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    animation: fadeInUp 0.6s ease 0.1s both;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--gray-600);
    margin-bottom: 32px;
    animation: fadeInUp 0.6s ease 0.2s both;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 48px;
    animation: fadeInUp 0.6s ease 0.3s both;
}

.hero-stats {
    display: flex;
    gap: 40px;
    animation: fadeInUp 0.6s ease 0.4s both;
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 2rem;
    font-weight: 800;
    color: var(--gray-900);
}

.stat-suffix {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-500);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--gray-500);
}

/* Hero Visual */
.hero-visual {
    position: relative;
    animation: fadeInRight 0.8s ease 0.3s both;
}

.dashboard-preview {
    background: #fff;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-2xl);
    overflow: hidden;
    border: 1px solid var(--gray-200);
}

.preview-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--gray-50);
    border-bottom: 1px solid var(--gray-200);
}

.preview-dots {
    display: flex;
    gap: 6px;
}

.preview-dots span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--gray-300);
}

.preview-dots span:nth-child(1) { background: #ef4444; }
.preview-dots span:nth-child(2) { background: #fbbf24; }
.preview-dots span:nth-child(3) { background: #22c55e; }

.preview-title {
    font-size: 0.75rem;
    color: var(--gray-500);
    font-weight: 500;
}

.preview-content {
    display: flex;
    min-height: 300px;
}

.preview-sidebar {
    width: 50px;
    background: var(--gray-900);
    padding: 16px 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.sidebar-item {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    color: var(--gray-400);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.sidebar-item:hover,
.sidebar-item.active {
    background: var(--primary-500);
    color: #fff;
}

.preview-main {
    flex: 1;
    padding: 16px;
    background: var(--gray-50);
}

.device-cards {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 16px;
}

.device-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: #fff;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.device-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    background: linear-gradient(135deg, var(--primary-500), var(--secondary-500));
}

.device-icon.wemos {
    background: linear-gradient(135deg, #06b6d4, #0891b2);
}

.device-info {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.device-name {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--gray-900);
}

.device-status {
    font-size: 0.6875rem;
    color: var(--gray-500);
}

.device-status.online {
    color: var(--success-500);
}

.device-status.offline {
    color: var(--gray-400);
}

.device-toggle {
    width: 40px;
    height: 22px;
    background: var(--gray-300);
    border-radius: var(--radius-full);
    position: relative;
    cursor: pointer;
    transition: background var(--transition-fast);
}

.device-toggle::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 18px;
    height: 18px;
    background: #fff;
    border-radius: 50%;
    transition: transform var(--transition-fast);
}

.device-toggle.on {
    background: var(--primary-500);
}

.device-toggle.on::after {
    transform: translateX(18px);
}

.pin-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}

.pin-item {
    padding: 10px;
    background: #fff;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    text-align: center;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--gray-500);
    transition: all var(--transition-fast);
}

.pin-item.active {
    background: var(--primary-500);
    border-color: var(--primary-500);
    color: #fff;
}

/* Floating Cards */
.floating-card {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: #fff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--gray-700);
}

.floating-card svg {
    color: var(--success-500);
}

.floating-card.card-1 {
    top: 20%;
    left: -20px;
    animation: float 4s ease-in-out infinite;
}

.floating-card.card-2 {
    bottom: 30%;
    right: -30px;
    animation: float 4s ease-in-out infinite 1s;
}

.floating-card.card-2 svg {
    color: var(--primary-500);
}

/* Hero Wave */
.hero-wave {
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
}

.hero-wave svg {
    display: block;
    width: 100%;
    height: auto;
}

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

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 60px;
}

.section-tag {
    display: inline-block;
    padding: 6px 14px;
    background: var(--primary-100);
    color: var(--primary-600);
    font-size: 0.8125rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    margin-bottom: 16px;
}

.section-description {
    font-size: 1.125rem;
    color: var(--gray-600);
}

/* =====================================================
   Features Section
   ===================================================== */
.features {
    background: #fff;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-card {
    padding: 32px;
    background: var(--gray-50);
    border-radius: var(--radius-xl);
    transition: all var(--transition-normal);
    border: 1px solid transparent;
}

.feature-card:hover {
    background: #fff;
    border-color: var(--primary-200);
    box-shadow: var(--shadow-xl);
    transform: translateY(-4px);
}

.feature-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-500), var(--secondary-500));
    border-radius: var(--radius-lg);
    margin-bottom: 20px;
}

.feature-icon svg {
    width: 28px;
    height: 28px;
    stroke: #fff;
}

.feature-title {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.feature-description {
    color: var(--gray-600);
    font-size: 0.9375rem;
    line-height: 1.7;
}

/* =====================================================
   How It Works Section
   ===================================================== */
.how-it-works {
    background: var(--gray-50);
}

.steps-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
}

.step {
    flex: 1;
    max-width: 320px;
    padding: 40px 32px;
    background: #fff;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    text-align: center;
    position: relative;
}

.step-number {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-500), var(--secondary-500));
    color: #fff;
    font-size: 1rem;
    font-weight: 700;
    border-radius: 50%;
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
}

.step-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-50);
    border-radius: 50%;
    margin: 0 auto 20px;
}

.step-icon svg {
    width: 28px;
    height: 28px;
    stroke: var(--primary-600);
}

.step-title {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.step-description {
    color: var(--gray-600);
    font-size: 0.9375rem;
}

.step-connector {
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-300), var(--primary-500));
    flex-shrink: 0;
}

/* =====================================================
   Devices Section
   ===================================================== */
.devices {
    background: #fff;
}

.devices-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
    max-width: 900px;
    margin: 0 auto;
}

.device-showcase {
    padding: 40px;
    background: linear-gradient(135deg, var(--gray-50), #fff);
    border-radius: var(--radius-xl);
    border: 1px solid var(--gray-200);
    text-align: center;
    transition: all var(--transition-normal);
}

.device-showcase:hover {
    border-color: var(--primary-300);
    box-shadow: var(--shadow-xl);
}

.device-image {
    margin-bottom: 24px;
    display: flex;
    justify-content: center;
}

.chip-visual {
    padding: 20px;
    background: var(--gray-900);
    border-radius: var(--radius-lg);
}

.chip-body {
    display: flex;
    align-items: center;
    gap: 8px;
}

.chip-pins {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.chip-pins span {
    width: 20px;
    height: 4px;
    background: #a8a29e;
    border-radius: 1px;
}

.chip-pins.left span {
    border-radius: 2px 0 0 2px;
}

.chip-pins.right span {
    border-radius: 0 2px 2px 0;
}

.chip-center {
    width: 80px;
    height: 80px;
    background: var(--gray-800);
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--gray-700);
}

.chip-label {
    font-size: 0.75rem;
    font-weight: 700;
    color: #fff;
    letter-spacing: 1px;
}

.chip-sublabel {
    font-size: 0.625rem;
    color: var(--gray-400);
}

.chip-visual.wemos .chip-center {
    background: #0e7490;
    border-color: #0891b2;
}

.device-title {
    font-size: 1.5rem;
    margin-bottom: 16px;
}

.device-features {
    text-align: left;
    display: inline-block;
}

.device-features li {
    padding: 8px 0;
    color: var(--gray-600);
    font-size: 0.9375rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.device-features li::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--primary-500);
    border-radius: 50%;
}

/* =====================================================
   Pricing Section
   ===================================================== */
.pricing {
    background: var(--gray-50);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    max-width: 1000px;
    margin: 0 auto;
}

.pricing-card {
    padding: 40px 32px;
    background: #fff;
    border-radius: var(--radius-xl);
    border: 2px solid var(--gray-200);
    text-align: center;
    position: relative;
    transition: all var(--transition-normal);
}

.pricing-card:hover {
    border-color: var(--primary-300);
    box-shadow: var(--shadow-xl);
}

.pricing-card.popular {
    border-color: var(--primary-500);
    transform: scale(1.05);
    box-shadow: var(--shadow-xl);
}

.popular-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 6px 16px;
    background: linear-gradient(135deg, var(--primary-500), var(--secondary-500));
    color: #fff;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

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

.pricing-name {
    font-size: 1.25rem;
    color: var(--gray-600);
    margin-bottom: 16px;
}

.pricing-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 4px;
}

.price-amount {
    font-size: 3rem;
    font-weight: 800;
    color: var(--gray-900);
}

.price-currency {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-500);
}

.price-period {
    font-size: 0.9375rem;
    color: var(--gray-400);
}

.pricing-features {
    margin-bottom: 32px;
    text-align: left;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--gray-100);
    color: var(--gray-700);
    font-size: 0.9375rem;
}

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

.pricing-features svg {
    width: 20px;
    height: 20px;
    stroke: var(--success-500);
    flex-shrink: 0;
}

/* =====================================================
   CTA Section
   ===================================================== */
.cta {
    background: linear-gradient(135deg, var(--primary-600), var(--secondary-600));
    padding: 80px 0;
}

.cta-content {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.cta-title {
    font-size: clamp(2rem, 4vw, 2.5rem);
    color: #fff;
    margin-bottom: 16px;
}

.cta-description {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 32px;
}

.cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* =====================================================
   Contact Section
   ===================================================== */
.contact {
    background: #fff;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 60px;
}

.contact-item {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
}

.contact-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-100);
    border-radius: var(--radius-lg);
    flex-shrink: 0;
}

.contact-icon svg {
    width: 22px;
    height: 22px;
    stroke: var(--primary-600);
}

.contact-details h4 {
    font-size: 1rem;
    margin-bottom: 4px;
}

.contact-details a,
.contact-details span {
    color: var(--gray-600);
    font-size: 0.9375rem;
}

.contact-details a:hover {
    color: var(--primary-600);
}

.social-links {
    display: flex;
    gap: 12px;
    margin-top: 32px;
}

.social-link {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-100);
    border-radius: var(--radius-lg);
    color: var(--gray-600);
    transition: all var(--transition-fast);
}

.social-link:hover {
    background: var(--primary-500);
    color: #fff;
}

.social-link svg {
    width: 20px;
    height: 20px;
}

/* Contact Form */
.contact-form {
    padding: 40px;
    background: var(--gray-50);
    border-radius: var(--radius-xl);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    font-size: 1rem;
    font-family: inherit;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    background: #fff;
    transition: all var(--transition-fast);
    color: var(--gray-900);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--gray-400);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* =====================================================
   Footer
   ===================================================== */
.footer {
    background: var(--gray-900);
    padding: 80px 0 30px;
    color: var(--gray-400);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 60px;
}

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

.footer-description {
    font-size: 0.9375rem;
    line-height: 1.7;
    max-width: 300px;
}

.footer-links h4 {
    color: #fff;
    font-size: 1rem;
    margin-bottom: 20px;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    font-size: 0.9375rem;
    color: var(--gray-400);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: #fff;
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid var(--gray-800);
    text-align: center;
    font-size: 0.875rem;
}

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

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-15px);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.5;
        transform: scale(1.2);
    }
}

/* Scroll Animations */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* =====================================================
   Responsive Design
   ===================================================== */
@media (max-width: 1024px) {
    :root {
        --section-padding: 80px;
    }

    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-content {
        max-width: 100%;
    }

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

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

    .hero-visual {
        max-width: 500px;
        margin: 0 auto;
    }

    .floating-card.card-1 {
        left: 0;
    }

    .floating-card.card-2 {
        right: 0;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .steps-container {
        flex-direction: column;
    }

    .step-connector {
        width: 2px;
        height: 40px;
        background: linear-gradient(180deg, var(--primary-300), var(--primary-500));
    }

    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
    }

    .pricing-card.popular {
        transform: none;
    }

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

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 60px;
    }

    .nav-links {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 28px;
        padding: 20px;
        margin: 0;
        list-style: none;
        opacity: 0;
        visibility: hidden;
        z-index: 1002;
        transition: all var(--transition-normal);
    }

    .nav-links.active {
        opacity: 1;
        visibility: visible;
    }

    .nav-links li {
        text-align: center;
    }

    .nav-links a {
        font-size: 1.25rem;
    }

    .mobile-toggle {
        display: flex;
        z-index: 1003;
    }

    .hero {
        min-height: auto;
        padding: 140px 0 60px;
    }

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

    .hero-stats {
        flex-direction: column;
        gap: 20px;
        align-items: center;
    }

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

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

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

    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-description {
        max-width: 100%;
    }

    .social-links {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .btn-lg {
        padding: 14px 24px;
        font-size: 0.9375rem;
    }

    .hero-badge {
        font-size: 0.75rem;
    }

    .preview-content {
        flex-direction: column;
    }

    .preview-sidebar {
        width: 100%;
        flex-direction: row;
        justify-content: center;
        padding: 12px;
    }

    .floating-card {
        display: none;
    }

    .step {
        padding: 32px 24px;
    }

    .pricing-card {
        padding: 32px 24px;
    }

    .contact-form {
        padding: 24px;
    }
}