/* OnGarde Website Styles - Best Practices Applied */

:root {
    --primary-color: #667eea;
    --primary-dark: #764ba2;
    --secondary-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --bg-light: #f9fafb;
    --bg-white: #ffffff;
    --border-color: #e5e7eb;
    --success-color: #10b981;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    scroll-behavior: smooth;
}

/* ========================================
   ACCESSIBILITY FEATURES
   ======================================== */

/* Skip to content link */
.skip-to-content {
    position: absolute;
    top: -60px;
    left: 10px;
    background: var(--primary-color);
    color: white;
    padding: 12px 20px;
    text-decoration: none;
    font-weight: 600;
    z-index: 10000;
    border-radius: 4px;
    transition: top 0.3s ease;
}

.skip-to-content:focus {
    top: 10px;
    outline: 3px solid var(--warning-color);
    outline-offset: 3px;
}

/* Improved focus indicators */
a:focus,
button:focus,
.btn-primary:focus,
.btn-secondary:focus,
.btn-card:focus {
    outline: 3px solid var(--warning-color);
    outline-offset: 3px;
}

/* ========================================
   ANIMATIONS
   ======================================== */

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

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

/* ========================================
   LAYOUT
   ======================================== */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ========================================
   HERO SECTION
   ======================================== */

.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 20px 0 80px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: 
        radial-gradient(circle at 30% 40%, rgba(255,255,255,0.12) 0%, transparent 40%),
        radial-gradient(circle at 70% 60%, rgba(118, 75, 162, 0.3) 0%, transparent 40%);
    animation: heroFloat 20s ease-in-out infinite;
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(30deg, transparent 48%, rgba(255,255,255,0.05) 49%, rgba(255,255,255,0.05) 51%, transparent 52%),
        linear-gradient(150deg, transparent 48%, rgba(255,255,255,0.05) 49%, rgba(255,255,255,0.05) 51%, transparent 52%);
    background-size: 80px 80px;
    opacity: 0.4;
    animation: heroPattern 30s linear infinite;
}

@keyframes heroFloat {
    0%, 100% {
        transform: translate(0, 0) rotate(0deg);
    }
    33% {
        transform: translate(30px, -30px) rotate(1deg);
    }
    66% {
        transform: translate(-20px, 20px) rotate(-1deg);
    }
}

@keyframes heroPattern {
    0% {
        background-position: 0 0;
    }
    100% {
        background-position: 80px 80px;
    }
}

/* ========================================
   NAVIGATION
   ======================================== */

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    z-index: 10;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 28px;
    font-weight: 700;
    transition: transform 0.3s ease;
    cursor: pointer;
    background: rgba(255, 255, 255, 0.95);
    padding: 10px 20px;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.logo:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

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

.logo-text {
    font-size: 24px;
    font-weight: 700;
    color: #667eea;
}

/* Mobile menu toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

.hamburger-line {
    width: 28px;
    height: 3px;
    background: white;
    border-radius: 2px;
    transition: all 0.3s ease;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translateY(8px);
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translateY(-8px);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 20px;
    align-items: center;
    flex-wrap: wrap;
}

.nav-links a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
    padding-bottom: 5px;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: white;
    transition: width 0.3s ease;
}

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

.nav-links a:hover {
    opacity: 1;
    transform: translateY(-2px);
}

/* ========================================
   BUTTONS
   ======================================== */

.btn-primary {
    background: white;
    color: #667eea;
    padding: 12px 28px;
    border-radius: 8px;
    font-weight: 700;
    text-decoration: none;
    display: inline-block;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
    background: #f8f9fa;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    padding: 10px 24px;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    display: inline-block;
    border: 2px solid white;
    transition: background 0.2s;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.3);
}

.btn-large {
    padding: 16px 40px;
    font-size: 18px;
    border-radius: 12px;
}

/* ========================================
   HERO CONTENT
   ======================================== */

.hero-content {
    max-width: 900px;
    margin: 80px auto;
    text-align: center;
    animation: fadeInUp 0.8s ease-out;
    position: relative;
    z-index: 10;
}

.hero-content h1 {
    font-size: 56px;
    font-weight: 800;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #ffffff 0%, rgba(255,255,255,0.9) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 22px;
    opacity: 0.95;
    margin-bottom: 40px;
    line-height: 1.6;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-cta {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-bottom: 60px;
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

.hero-cta .btn-large:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-top: 60px;
    animation: fadeInUp 0.8s ease-out 0.6s both;
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: transform 0.3s ease;
}

.stat:hover {
    transform: scale(1.1);
}

.stat-number {
    font-size: 36px;
    font-weight: 700;
    display: block;
    background: linear-gradient(135deg, #ffffff 0%, rgba(255,255,255,0.8) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 14px;
    opacity: 0.8;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ========================================
   SECTIONS
   ======================================== */

.problem-section,
.features-section,
.how-it-works-section,
.pricing-section,
.install-section,
.combined-platforms-section {
    padding: 100px 0;
}

.problem-section {
    background: var(--bg-light);
    position: relative;
}

.problem-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
    opacity: 0.3;
}

.problem-section h2,
.features-section h2,
.how-it-works-section h2,
.pricing-section h2,
.install-section h2,
.combined-platforms-section h2 {
    text-align: center;
    font-size: 42px;
    margin-bottom: 24px;
    line-height: 1.25;
    font-weight: 800;
    background: linear-gradient(135deg, var(--text-dark), var(--primary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.5px;
}

.section-subtitle {
    text-align: center;
    font-size: 19px;
    color: var(--text-dark);
    opacity: 0.8;
    margin-bottom: 60px;
    max-width: 750px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
}

/* ========================================
   TWO-COLUMN LAYOUT
   ======================================== */

.two-column {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-top: 50px;
    max-width: 1100px;
    margin-left: auto;
    margin-right: auto;
}

.column {
    background: white;
    padding: 45px;
    border-radius: 16px;
    border: 2px solid var(--border-color);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.column:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.1);
    border-color: rgba(102, 126, 234, 0.3);
}

.column.highlight {
    border-color: var(--primary-color);
    box-shadow: 0 8px 30px rgba(37, 99, 235, 0.15);
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.02), rgba(118, 75, 162, 0.02));
}

.column.highlight::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-dark));
    border-radius: 16px 16px 0 0;
}

.column h3 {
    font-size: 26px;
    margin-bottom: 24px;
    font-weight: 700;
    color: var(--text-dark);
}

.feature-list {
    list-style: none;
    margin: 24px 0;
}

.feature-list li {
    padding: 14px 0;
    padding-left: 32px;
    position: relative;
    line-height: 1.7;
    color: var(--text-dark);
    font-size: 16px;
}

.feature-list.check li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--success-color);
    font-weight: bold;
    font-size: 18px;
}

.feature-list.star li::before {
    content: "★";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
    font-size: 18px;
}

.column-footer {
    margin-top: 28px;
    padding-top: 24px;
    border-top: 2px solid var(--border-color);
    color: var(--text-dark);
    font-size: 15px;
    line-height: 1.7;
}

/* ========================================
   COMBINED PLATFORMS SECTION
   ======================================== */

.combined-platforms-section {
    background: white;
}

.platform-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
    margin: 50px auto;
    max-width: 950px;
}

.platform-badge {
    background: white;
    padding: 24px 20px;
    border-radius: 14px;
    text-align: center;
    border: 2px solid var(--border-color);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.platform-badge::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.1));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.platform-badge:hover {
    border-color: var(--primary-color);
    transform: translateY(-6px) scale(1.03);
    box-shadow: 0 12px 28px rgba(37, 99, 235, 0.2);
}

.platform-badge:hover::after {
    opacity: 1;
}

.platform-icon {
    font-size: 36px;
    display: block;
    margin-bottom: 12px;
    position: relative;
    z-index: 1;
    transition: transform 0.3s ease;
}

.platform-badge:hover .platform-icon {
    transform: scale(1.1);
}

.platform-name {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-dark);
    display: block;
    position: relative;
    z-index: 1;
    line-height: 1.4;
}

/* ========================================
   COMPARISON TABLE
   ======================================== */

.comparison-wrapper {
    margin-top: 70px;
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}

.comparison-wrapper h3 {
    text-align: center;
    font-size: 32px;
    margin-bottom: 40px;
    color: var(--text-dark);
    font-weight: 700;
}

.comparison-table-wrapper {
    overflow-x: auto;
    margin: 40px 0;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.comparison-table {
    width: 100%;
    background: white;
    border-radius: 16px;
    border-collapse: collapse;
}

.comparison-table th,
.comparison-table td {
    padding: 18px 20px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.comparison-table th {
    background: var(--bg-light);
    font-weight: 700;
    color: var(--text-dark);
    font-size: 15px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.comparison-table tr:last-child td {
    border-bottom: none;
}

.comparison-table tr.comparison-highlight {
    background: rgba(37, 99, 235, 0.03);
}

.status-yes {
    color: var(--success-color);
    font-weight: 600;
}

.status-no {
    color: var(--danger-color);
    font-weight: 600;
}

.status-warning {
    color: var(--warning-color);
    font-weight: 600;
}

.status-expensive {
    color: var(--danger-color);
    font-weight: 600;
}

.comparison-note {
    text-align: center;
    margin-top: 40px;
    font-size: 18px;
    color: var(--text-dark);
    line-height: 1.7;
    padding: 0 20px;
}

/* ========================================
   FEATURES SECTION
   ======================================== */

.features-section {
    background: var(--bg-light);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 28px;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    background: white;
    padding: 36px;
    border-radius: 16px;
    border: 2px solid var(--border-color);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(102, 126, 234, 0.05), transparent);
    transition: left 0.5s ease;
}

.feature-card:hover {
    box-shadow: 0 16px 48px rgba(102, 126, 234, 0.18);
    transform: translateY(-8px);
    border-color: var(--primary-color);
}

.feature-card:hover::before {
    left: 100%;
}

.feature-icon {
    margin-bottom: 24px;
    display: inline-block;
    transition: transform 0.3s ease;
}

.feature-icon svg {
    stroke-width: 2px;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(3deg);
}

.feature-card h3 {
    font-size: 23px;
    margin-bottom: 16px;
    font-weight: 700;
    color: var(--text-dark);
    line-height: 1.4;
}

.feature-card p {
    color: var(--text-dark);
    margin-bottom: 22px;
    line-height: 1.7;
    font-size: 15px;
}

.feature-example {
    background: var(--bg-light);
    padding: 15px;
    border-radius: 8px;
    font-family: 'Courier New', monospace;
    font-size: 14px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
}

.blocked {
    color: var(--danger-color);
    font-weight: bold;
    white-space: nowrap;
}

.success {
    color: var(--success-color);
    font-weight: bold;
    white-space: nowrap;
}

/* ========================================
   HOW IT WORKS
   ======================================== */

.how-it-works-section {
    background: white;
}

.architecture-diagram {
    background: var(--bg-light);
    padding: 50px 40px;
    border-radius: 16px;
    margin-bottom: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
    max-width: 800px;
    margin: 0 auto 60px;
    border: 1px solid var(--border-color);
}

.arch-box {
    background: white;
    padding: 20px 40px;
    border-radius: 8px;
    border: 2px solid var(--border-color);
    font-weight: 600;
    text-align: center;
}

.arch-box.small {
    padding: 15px 30px;
    font-size: 14px;
}

.arch-step.highlight .arch-box {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-dark);
}

.arch-arrow {
    font-size: 24px;
    color: var(--text-light);
}

.arch-detail {
    font-size: 14px;
    color: var(--text-light);
    margin-top: 8px;
}

.arch-arrow-split {
    display: flex;
    gap: 60px;
    margin-top: 20px;
}

/* ========================================
   COMING SOON SECTION
   ======================================== */

.coming-soon-section {
    background: var(--bg-light);
}

.coming-soon-badge-large {
    text-align: center;
    display: block;
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: white;
    padding: 14px 32px;
    border-radius: 30px;
    font-weight: 700;
    font-size: 16px;
    margin: 0 auto 30px;
    width: fit-content;
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
    letter-spacing: 0.5px;
}

.status-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    margin: 60px auto;
    max-width: 1000px;
}

.status-card {
    background: white;
    padding: 40px 30px;
    border-radius: 16px;
    text-align: center;
    border: 2px solid var(--border-color);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.status-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.1);
    border-color: rgba(102, 126, 234, 0.3);
}

.status-icon {
    font-size: 48px;
    margin-bottom: 20px;
    display: block;
}

.status-card h3 {
    font-size: 22px;
    margin-bottom: 12px;
    color: var(--text-dark);
    font-weight: 700;
}

.status-card p {
    color: var(--text-dark);
    opacity: 0.8;
    line-height: 1.6;
    font-size: 15px;
}

.early-access-box {
    background: white;
    padding: 50px;
    border-radius: 16px;
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
    border: 2px solid var(--primary-color);
    box-shadow: 0 8px 30px rgba(102, 126, 234, 0.15);
}

.early-access-box h3 {
    font-size: 28px;
    margin-bottom: 16px;
    color: var(--text-dark);
    font-weight: 700;
}

.early-access-box p {
    font-size: 17px;
    color: var(--text-dark);
    opacity: 0.85;
    line-height: 1.7;
    margin-bottom: 32px;
}

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

.cta-buttons .btn-large {
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

/* ========================================
   PRICING
   ======================================== */

.pricing-section {
    background: var(--bg-light);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
    margin-top: 60px;
    max-width: 1100px;
    margin-left: auto;
    margin-right: auto;
}

.pricing-card {
    background: white;
    border: 2px solid var(--border-color);
    border-radius: 16px;
    padding: 45px;
    text-align: center;
    position: relative;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.pricing-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 16px 50px rgba(37, 99, 235, 0.18);
    border-color: rgba(102, 126, 234, 0.4);
}

.pricing-card.featured {
    border-color: var(--primary-color);
    box-shadow: 0 12px 40px rgba(37, 99, 235, 0.25);
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.02), rgba(118, 75, 162, 0.02));
}

.pricing-card.featured:hover {
    box-shadow: 0 16px 50px rgba(37, 99, 235, 0.3);
}

.badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-color);
    color: white;
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
}

.pricing-card h3 {
    font-size: 24px;
    margin-bottom: 20px;
}

.price {
    margin: 20px 0;
}

.amount {
    font-size: 48px;
    font-weight: 700;
    color: var(--primary-color);
}

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

.pricing-features {
    list-style: none;
    margin: 30px 0;
    text-align: left;
}

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

.pricing-features li.disabled {
    color: var(--text-light);
}

.btn-card {
    display: block;
    width: 100%;
    padding: 15px;
    background: var(--bg-light);
    color: var(--text-dark);
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    margin-top: 20px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn-card::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-card:hover::before {
    width: 300px;
    height: 300px;
}

.btn-card:hover {
    background: var(--border-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

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

.btn-card.btn-primary:hover {
    background: var(--primary-dark);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.3);
}


/* ========================================
   FOOTER
   ======================================== */

.footer {
    background: linear-gradient(135deg, #2d3748 0%, #1a202c 100%);
    color: white;
    padding: 60px 0 30px;
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(102, 126, 234, 0.5), transparent);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h4 {
    margin-bottom: 20px;
    font-size: 16px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.footer-col ul {
    list-style: none;
}

.footer-col a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    display: block;
    padding: 8px 0;
    transition: color 0.2s;
}

.footer-col a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
}

.tagline {
    margin-top: 10px;
    font-size: 14px;
}

/* ========================================
   BACK TO TOP BUTTON
   ======================================== */

.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-5px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}

.back-to-top svg {
    stroke-width: 3px;
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */

/* Tablet and below (768px) */
@media (max-width: 768px) {
    /* Navigation */
    .nav-container {
        padding: 15px 20px;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .nav-links {
        position: fixed;
        top: 70px;
        right: -100%;
        width: 100%;
        max-width: 300px;
        background: var(--primary-dark);
        flex-direction: column;
        padding: 30px 20px;
        border-radius: 12px 0 0 12px;
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.3);
        transition: right 0.3s ease;
        gap: 15px;
        z-index: 1000;
    }
    
    .nav-links.active {
        right: 0;
    }
    
    .nav-links li {
        width: 100%;
    }
    
    .nav-links a {
        display: block;
        padding: 12px 16px;
        border-radius: 8px;
        transition: background 0.3s ease;
    }
    
    .nav-links a:hover {
        background: rgba(255, 255, 255, 0.1);
    }
    
    .nav-links .btn-primary {
        text-align: center;
        width: 100%;
    }
    
    /* Hero */
    .hero {
        padding: 20px 0 60px;
    }
    
    .hero-content {
        margin: 40px auto;
    }
    
    .hero-content h1 {
        font-size: 36px;
        line-height: 1.2;
    }
    
    .hero-subtitle {
        font-size: 18px;
        padding: 0 10px;
    }
    
    .hero-cta {
        flex-direction: column;
        gap: 15px;
        align-items: center;
    }
    
    .btn-large {
        width: 100%;
        max-width: 300px;
    }
    
    .hero-stats {
        flex-wrap: wrap;
        gap: 30px;
    }
    
    /* Sections */
    .problem-section,
    .features-section,
    .how-it-works-section,
    .pricing-section,
    .coming-soon-section,
    .combined-platforms-section {
        padding: 70px 0;
    }
    
    .problem-section h2,
    .features-section h2,
    .how-it-works-section h2,
    .pricing-section h2,
    .install-section h2,
    .combined-platforms-section h2 {
        font-size: 34px !important;
        line-height: 1.3 !important;
        padding: 0 15px;
        margin-bottom: 20px !important;
    }
    
    .section-subtitle {
        font-size: 17px;
        padding: 0 20px;
        margin-bottom: 45px;
    }
    
    /* Two Column Layouts */
    .two-column {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .column {
        padding: 30px 20px;
    }
    
    /* Features Grid */
    .features-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .feature-card {
        padding: 25px 20px;
    }
    
    /* Platform Badges */
    .platform-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .platform-badge {
        padding: 15px 10px;
    }
    
    .platform-icon {
        font-size: 28px;
    }
    
    .platform-name {
        font-size: 12px;
    }
    
    /* Comparison Table */
    .comparison-table-wrapper {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .comparison-table {
        font-size: 12px;
        min-width: 600px;
    }
    
    .comparison-table th,
    .comparison-table td {
        padding: 10px 6px;
        font-size: 12px;
    }
    
    /* Pricing */
    .pricing-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    
    .pricing-card.featured {
        transform: none;
    }
    
    /* Architecture */
    .arch-arrow-split {
        flex-direction: column;
        gap: 20px;
    }
    
    .architecture-diagram {
        padding: 40px 25px;
    }
    
    /* Coming Soon Section */
    .status-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .status-card {
        padding: 32px 25px;
    }
    
    .early-access-box {
        padding: 40px 25px;
    }
    
    .early-access-box h3 {
        font-size: 24px;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .cta-buttons .btn-large {
        width: 100%;
        max-width: 350px;
        margin: 0 auto;
    }
    
    /* Back to Top */
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }
}

/* Mobile Only (480px) */
@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 32px;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .platform-grid {
        grid-template-columns: 1fr;
    }
    
    .stat-number {
        font-size: 28px;
    }
    
    /* Coming Soon Section - Mobile */
    .coming-soon-badge-large {
        font-size: 14px;
        padding: 12px 24px;
    }
    
    .status-card {
        padding: 28px 20px;
    }
    
    .status-icon {
        font-size: 40px;
    }
    
    .status-card h3 {
        font-size: 20px;
    }
    
    .early-access-box {
        padding: 32px 20px;
    }
    
    .early-access-box h3 {
        font-size: 22px;
    }
    
    .early-access-box p {
        font-size: 16px;
    }
}

/* Large Desktop (1400px+) */
@media (min-width: 1400px) {
    .container {
        max-width: 1400px;
    }
    
    .hero-content h1 {
        font-size: 64px;
    }
    
    .hero-subtitle {
        font-size: 24px;
    }
}