/* ==========================================================================
   CSS Reset & Variables
   ========================================================================== */

:root {
    --bg-dark: #070a13;
    --bg-card: #0f1524;
    --bg-card-hover: #182239;
    --primary: #10b981;
    --primary-hover: #059669;
    --primary-glow: rgba(16, 185, 129, 0.15);
    --secondary: #3b82f6;
    --secondary-hover: #2563eb;
    --text-white: #f8fafc;
    --text-light: #e2e8f0;
    --text-muted: #94a3b8;
    --border-color: rgba(255, 255, 255, 0.06);
    --border-color-focus: rgba(16, 185, 129, 0.4);
    --border-error: #ef4444;
    --navbar-bg: rgba(7, 10, 19, 0.8);
    
    --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --max-width: 1200px;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    background-color: var(--bg-dark);
}

body {
    font-family: var(--font-sans);
    color: var(--text-light);
    background-color: var(--bg-dark);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* ==========================================================================
   Utilities
   ========================================================================== */

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
    z-index: 2;
}

.text-gradient {
    background: linear-gradient(135deg, #34d399 0%, #10b981 50%, #059669 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition-fast);
    border: none;
    outline: none;
    gap: 8px;
}

.btn-primary {
    background-color: var(--primary);
    color: #000;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    box-shadow: 0 0 20px rgba(16, 185, 129, 0.4);
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--text-white);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: var(--text-muted);
    transform: translateY(-2px);
}

/* ==========================================================================
   Header Navbar
   ========================================================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 80px;
    z-index: 1000;
    background-color: transparent;
    border-bottom: 1px solid transparent;
    transition: var(--transition-normal);
}

.navbar.scrolled {
    background-color: var(--navbar-bg);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    height: 70px;
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    font-weight: 800;
    font-size: 1.3rem;
    color: var(--text-white);
    letter-spacing: -0.5px;
}

.logo-text span {
    font-size: 0.9rem;
    font-weight: 500;
    margin-left: 2px;
    background: linear-gradient(135deg, #60a5fa, #3b82f6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo-icon {
    object-fit: contain;
}

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

.nav-item-link {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition-fast);
    position: relative;
    padding: 6px 0;
}

.nav-item-link:hover {
    color: var(--text-white);
}

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

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

.nav-cta-btn {
    background-color: var(--primary-glow);
    color: var(--primary);
    padding: 8px 20px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition-fast);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.nav-cta-btn:hover {
    background-color: var(--primary);
    color: #000;
    box-shadow: 0 0 15px rgba(16, 185, 129, 0.3);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 18px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1001;
}

.mobile-menu-btn span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--text-white);
    border-radius: 2px;
    transition: var(--transition-fast);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero-section {
    position: relative;
    min-height: 100vh;
    padding: 160px 0 80px 0;
    display: flex;
    align-items: center;
}

.hero-bg-glow {
    position: absolute;
    top: -10%;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    height: 80%;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.08) 0%, rgba(7, 10, 19, 0) 70%);
    z-index: 1;
    pointer-events: none;
}

.hero-grid-pattern {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(to right, rgba(255, 255, 255, 0.01) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.01) 1px, transparent 1px);
    background-size: 50px 50px;
    z-index: 1;
    pointer-events: none;
}

.hero-container {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 48px;
    align-items: center;
}

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background-color: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    padding: 6px 14px;
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 24px;
}

.badge-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--primary);
    box-shadow: 0 0 10px var(--primary);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
    70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
    100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 3.8rem);
    font-weight: 800;
    line-height: 1.15;
    color: var(--text-white);
    margin-bottom: 24px;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-muted);
    margin-bottom: 40px;
    max-width: 540px;
}

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

.hero-trust-indicators {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
    border-top: 1px solid var(--border-color);
    padding-top: 32px;
    width: 100%;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-light);
}

.trust-icon {
    font-size: 1rem;
}

/* Code Preview Window */
.hero-code-preview {
    display: flex;
    justify-content: flex-end;
    z-index: 2;
}

.code-window {
    width: 100%;
    max-width: 480px;
    background-color: #0b0f19;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4), 0 0 20px rgba(16, 185, 129, 0.05);
}

.code-header {
    background-color: rgba(255, 255, 255, 0.02);
    border-bottom: 1px solid var(--border-color);
    padding: 12px 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

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

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.dot-red { background-color: #ef4444; }
.dot-yellow { background-color: #f59e0b; }
.dot-green { background-color: #10b981; }

.code-tabs {
    display: flex;
    gap: 4px;
}

.code-tab-btn {
    background: none;
    border: none;
    outline: none;
    color: var(--text-muted);
    font-family: var(--font-sans);
    font-size: 0.8rem;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition-fast);
}

.code-tab-btn:hover {
    color: var(--text-white);
    background-color: rgba(255, 255, 255, 0.04);
}

.code-tab-btn.active {
    color: var(--primary);
    background-color: rgba(16, 185, 129, 0.08);
}

.code-body {
    padding: 20px;
}

.code-content {
    display: none;
    margin: 0;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-light);
    overflow-x: auto;
    white-space: pre;
    line-height: 1.5;
}

.code-content.active {
    display: block;
}

.code-comment { color: #64748b; }
.code-keyword { color: #f43f5e; }
.code-string { color: #10b981; }

/* ==========================================================================
   Section Headers
   ========================================================================== */

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 64px auto;
}

.section-badge {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    display: inline-block;
    margin-bottom: 12px;
}

.section-title {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--text-white);
    line-height: 1.25;
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}

.section-subtitle {
    font-size: 1.05rem;
    color: var(--text-muted);
}

/* ==========================================================================
   Why Self-Hosted Section
   ========================================================================== */

.why-section {
    padding: 100px 0;
    background-color: rgba(255, 255, 255, 0.01);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
}

.why-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 36px 28px;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.why-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
    transform: scaleX(0);
    transition: var(--transition-normal);
}

.why-card:hover {
    transform: translateY(-5px);
    border-color: rgba(16, 185, 129, 0.2);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3), 0 0 15px rgba(16, 185, 129, 0.03);
}

.why-card:hover::before {
    transform: scaleX(1);
}

.why-card-icon {
    width: 48px;
    height: 48px;
    background-color: rgba(16, 185, 129, 0.08);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 24px;
}

.why-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 12px;
}

.why-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* ==========================================================================
   Features Section
   ========================================================================== */

.features-section {
    padding: 100px 0;
    position: relative;
}

.features-bg-glow {
    position: absolute;
    bottom: -10%;
    right: 5%;
    width: 60%;
    height: 60%;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.05) 0%, rgba(7, 10, 19, 0) 70%);
    z-index: 1;
    pointer-events: none;
}

.features-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 48px;
    align-items: center;
}

.features-grid-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 36px;
}

.feature-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.feature-item-num {
    font-family: var(--font-mono);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary);
    background-color: rgba(16, 185, 129, 0.08);
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    border: 1px solid rgba(16, 185, 129, 0.15);
}

.feature-item h4 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 8px;
}

.feature-item p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* ==========================================================================
   Server Architecture Diagram
   ========================================================================== */

.architecture-section {
    padding: 100px 0;
    background-color: rgba(255, 255, 255, 0.005);
    border-top: 1px solid var(--border-color);
}

.architecture-diagram-wrapper {
    background-color: rgba(255, 255, 255, 0.01);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 48px 24px;
    overflow-x: auto;
}

.arch-diagram {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 900px;
    gap: 16px;
    margin: 0 auto;
}

.arch-node {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 18px 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    width: 180px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    transition: var(--transition-fast);
}

.arch-node:hover {
    border-color: var(--primary);
    box-shadow: 0 0 15px rgba(16, 185, 129, 0.2);
    transform: translateY(-2px);
}

.arch-node-icon {
    font-size: 1.6rem;
    margin-bottom: 10px;
}

.arch-node-title {
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--text-white);
    margin-bottom: 4px;
}

.arch-node-desc {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.arch-arrow {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 90px;
    position: relative;
}

.arch-arrow::before {
    content: '';
    height: 2px;
    background-color: var(--border-color-focus);
    width: 100%;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
}

.arch-arrow::after {
    content: '➔';
    color: var(--primary);
    position: absolute;
    top: 50%;
    right: -2px;
    transform: translateY(-50%);
    font-size: 0.9rem;
}

.arch-arrow span {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--primary);
    background-color: var(--bg-dark);
    padding: 2px 6px;
    border-radius: 4px;
    margin-bottom: 12px;
    border: 1px solid var(--border-color);
    z-index: 1;
}

.arch-node-group.arch-docker-host {
    border: 2px dashed rgba(16, 185, 129, 0.3);
    background-color: rgba(16, 185, 129, 0.01);
    border-radius: var(--radius-lg);
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.arch-group-title {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--primary);
    text-transform: uppercase;
    font-weight: 600;
    text-align: center;
}

.arch-group-grid {
    display: flex;
    gap: 16px;
}

.arch-node.arch-docker-instance {
    border-left: 3px solid var(--primary);
}

.arch-internal-db {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    border-top: 1px solid var(--border-color);
    padding-top: 12px;
}

.arch-db-item {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    background-color: rgba(255,255,255,0.02);
    border: 1px solid var(--border-color);
    padding: 6px;
    border-radius: 4px;
    text-align: center;
    color: var(--text-light);
}

/* ==========================================================================
   Pricing & Plans Section
   ========================================================================== */

.pricing-section {
    padding: 100px 0;
    position: relative;
}

.pricing-bg-glow {
    position: absolute;
    top: 5%;
    left: 5%;
    width: 60%;
    height: 60%;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.05) 0%, rgba(7, 10, 19, 0) 70%);
    z-index: 1;
    pointer-events: none;
}

.pricing-selector {
    display: inline-flex;
    background-color: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    padding: 4px;
    border-radius: 8px;
    margin-top: 24px;
}

.selector-btn {
    background: none;
    border: none;
    outline: none;
    color: var(--text-muted);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 600;
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition-fast);
}

.selector-btn.active {
    background-color: var(--primary);
    color: #000;
}

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

.pricing-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    display: flex;
    flex-direction: column;
    position: relative;
    transition: var(--transition-normal);
}

.pricing-card.featured {
    border: 2px solid var(--primary);
    box-shadow: 0 15px 35px rgba(16, 185, 129, 0.1), 0 0 20px rgba(0,0,0,0.4);
}

.pricing-tag {
    position: absolute;
    top: 20px;
    right: 20px;
    background-color: var(--primary-glow);
    color: var(--primary);
    border: 1px solid rgba(16, 185, 129, 0.3);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 4px 10px;
    border-radius: 100px;
    text-transform: uppercase;
}

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

.plan-level {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-white);
    display: block;
    margin-bottom: 12px;
}

.plan-price {
    display: flex;
    align-items: baseline;
    gap: 8px;
    margin-bottom: 12px;
}

.price-val {
    font-size: 2.8rem;
    font-weight: 800;
    color: var(--text-white);
    letter-spacing: -1px;
}

.price-type {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.plan-desc {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.plan-features {
    list-style: none;
    margin-bottom: 40px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    flex-grow: 1;
}

.plan-features li {
    font-size: 0.95rem;
    color: var(--text-light);
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.plan-features li strong {
    color: var(--text-white);
}

.plan-features li .check {
    color: var(--primary);
    font-weight: 700;
}

.plan-btn {
    width: 100%;
}

/* ==========================================================================
   Contact Form Section
   ========================================================================== */

.contact-section {
    padding: 100px 0;
    border-top: 1px solid var(--border-color);
    background-color: rgba(255, 255, 255, 0.005);
}

.contact-layout {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 64px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.contact-info h2 {
    font-size: 2.3rem;
    font-weight: 800;
    color: var(--text-white);
    margin-bottom: 20px;
    letter-spacing: -0.5px;
}

.contact-info p {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-bottom: 40px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.info-block {
    display: flex;
    gap: 20px;
    align-items: center;
}

.info-icon {
    width: 52px;
    height: 52px;
    background-color: rgba(16, 185, 129, 0.08);
    border: 1px solid rgba(16, 185, 129, 0.15);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.info-block span {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.info-block strong {
    font-size: 1.05rem;
    color: var(--text-white);
    font-weight: 600;
}

/* Form Styling */
.contact-form-wrapper {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3);
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group {
    margin-bottom: 24px;
    display: flex;
    flex-direction: column;
    position: relative;
}

.form-group label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-white);
    margin-bottom: 8px;
}

.form-group input, 
.form-group select, 
.form-group textarea {
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    font-family: var(--font-sans);
    font-size: 0.95rem;
    color: var(--text-white);
    outline: none;
    transition: var(--transition-fast);
}

.form-group input:hover,
.form-group select:hover,
.form-group textarea:hover {
    border-color: rgba(255, 255, 255, 0.15);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
}

.form-group select {
    appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%2224%22%20height%3D%2224%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22%2394a3b8%22%20stroke-width%3D%222%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Cpolyline%20points%3D%226%209%2012%2015%2018%209%22%3E%3C%2Fpolyline%3E%3C%2Fsvg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    background-size: 16px;
    padding-right: 40px;
    cursor: pointer;
}

.form-group select option {
    background-color: var(--bg-card);
    color: var(--text-white);
}

.form-group.invalid input,
.form-group.invalid select,
.form-group.invalid textarea {
    border-color: var(--border-error);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.error-msg {
    display: none;
    font-size: 0.75rem;
    color: var(--border-error);
    margin-top: 6px;
    font-weight: 500;
}

.form-group.invalid .error-msg {
    display: block;
}

.submit-btn {
    width: 100%;
    background-color: var(--primary);
    color: #000;
    font-family: var(--font-sans);
    font-size: 0.95rem;
    font-weight: 700;
    padding: 14px 28px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    border: none;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.submit-btn:hover {
    background-color: var(--primary-hover);
    box-shadow: 0 0 25px rgba(16, 185, 129, 0.4);
    transform: translateY(-2px);
}

.submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.spinner {
    display: none;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(0, 0, 0, 0.1);
    border-top-color: #000;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.form-status {
    display: none;
    align-items: flex-start;
    gap: 12px;
    border-radius: var(--radius-sm);
    padding: 16px;
    margin-bottom: 24px;
    font-size: 0.9rem;
    line-height: 1.5;
}

.form-status.success {
    display: flex;
    background-color: rgba(16, 185, 129, 0.08);
    border: 1px solid rgba(16, 185, 129, 0.2);
    color: #a7f3d0;
}

.form-status.error {
    display: flex;
    background-color: rgba(239, 68, 68, 0.08);
    border: 1px solid rgba(239, 68, 68, 0.2);
    color: #fca5a5;
}

.status-icon {
    font-size: 1.1rem;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer-section {
    background-color: #04060b;
    border-top: 1px solid var(--border-color);
    padding: 80px 0 40px 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 48px;
    margin-bottom: 64px;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    font-weight: 800;
    font-size: 1.25rem;
    color: var(--text-white);
}

.footer-tagline {
    font-size: 0.95rem;
    color: var(--text-muted);
    max-width: 380px;
}

.footer-links {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.footer-column {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-column h4 {
    font-size: 0.9rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text-white);
    letter-spacing: 0.5px;
    margin-bottom: 12px;
}

.footer-column a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition-fast);
}

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

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 40px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.footer-copy {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.footer-copy a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
}

.footer-notice {
    font-size: 0.75rem;
    color: #475569;
    line-height: 1.5;
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */

@media (max-width: 992px) {
    .navbar {
        height: 70px;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 64px;
    }
    
    .hero-content {
        align-items: center;
    }
    
    .hero-subtitle {
        max-width: 100%;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .hero-trust-indicators {
        justify-content: center;
    }
    
    .hero-code-preview {
        justify-content: center;
    }
    
    .code-window {
        max-width: 550px;
    }
    
    .architecture-diagram-wrapper {
        padding: 36px 16px;
    }
    
    .arch-diagram {
        flex-direction: column;
        min-width: 100%;
        gap: 24px;
    }
    
    .arch-arrow {
        width: 100%;
        height: 40px;
    }
    
    .arch-arrow::before {
        width: 2px;
        height: 100%;
        top: 0;
        left: 50%;
        transform: translateX(-50%);
    }
    
    .arch-arrow::after {
        content: '▼';
        top: auto;
        bottom: -2px;
        right: auto;
        left: 50%;
        transform: translateX(-50%);
        font-size: 0.7rem;
    }
    
    .arch-arrow span {
        margin-bottom: 0;
        position: absolute;
        top: 50%;
        left: calc(50% + 16px);
        transform: translateY(-50%);
    }
    
    .arch-node-group.arch-docker-host {
        width: 100%;
        max-width: 400px;
    }
    
    .arch-group-grid {
        flex-direction: column;
        align-items: center;
    }
    
    .arch-node {
        width: 100%;
        max-width: 260px;
    }
    
    .contact-layout {
        grid-template-columns: 1fr;
        gap: 48px;
    }
}

@media (max-width: 768px) {
    .mobile-menu-btn {
        display: flex;
    }
    
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background-color: #0b0f19;
        border-left: 1px solid var(--border-color);
        flex-direction: column;
        justify-content: center;
        gap: 36px;
        z-index: 1000;
        transition: var(--transition-normal);
        padding: 40px;
    }
    
    .nav-links.active {
        right: 0;
    }
    
    .nav-links.active + .mobile-menu-btn span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .nav-links.active + .mobile-menu-btn span:nth-child(2) {
        opacity: 0;
    }
    
    .nav-links.active + .mobile-menu-btn span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 450px;
        margin: 0 auto;
    }
    
    .pricing-card.featured {
        transform: none !important;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-links {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 576px) {
    .form-grid {
        grid-template-columns: 1fr;
        gap: 0;
    }
    
    .contact-form-wrapper {
        padding: 24px;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}