/* ============================================
   Kloak Website Styles
   Modern, Premium Design System
   ============================================ */

/* CSS Variables */
:root {
    /* Colors */
    --color-bg: #0B0F19;
    --color-bg-secondary: #111827;
    --color-bg-tertiary: #1F2937;
    --color-surface: #1E293B;
    --color-border: rgba(255, 255, 255, 0.1);
    --color-border-hover: rgba(255, 255, 255, 0.2);

    --color-text: #F3F4F6;
    --color-text-secondary: rgba(243, 244, 246, 0.7);
    --color-text-muted: rgba(243, 244, 246, 0.5);

    --color-primary: #1782CE;
    --color-primary-light: #48A2E8;
    --color-primary-dark: #12639E;

    --color-accent: #10B981;
    --color-accent-secondary: #0D9488;

    --color-success: #10B981;
    --color-warning: #F59E0B;
    --color-error: #EF4444;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #12639E 0%, #1782CE 100%);
    --gradient-glow: radial-gradient(ellipse at center, rgba(23, 130, 206, 0.1) 0%, transparent 70%);
    --gradient-hero: radial-gradient(ellipse at top, rgba(23, 130, 206, 0.15) 0%, transparent 50%);

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 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: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3.5rem;
    --font-size-6xl: 4.5rem;

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.2), 0 4px 6px -2px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.2), 0 10px 10px -5px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 4px 14px 0 rgba(37, 99, 235, 0.39);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    scroll-padding-top: 100px;
}

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

a {
    color: inherit;
    text-decoration: none;
}

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

code {
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

/* ============================================
   Navigation
   ============================================ */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-6) var(--space-6) 0;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    padding-top: var(--space-4);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-3) var(--space-6);
    display: flex;
    align-items: center;
    justify-content: space-between;

    background: rgba(11, 15, 25, 0.7);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-full);
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
    transition: all var(--transition-base);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0;
    font-size: var(--font-size-xl);
    font-weight: 800;
    letter-spacing: 0.05em;
}

.logo-icon {
    height: 0.76em;
    width: auto;
    margin-right: 0.05em;
}

.logo-text {
    color: rgb(23, 130, 206);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-8);
    list-style: none;
}

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

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.nav-github {
    display: flex;
    align-items: center;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

.nav-github:hover {
    color: var(--color-text);
}

.nav-cta {
    display: inline-block;
    padding: var(--space-2) var(--space-5);
    background: var(--color-primary);
    color: white;
    font-weight: 600;
    font-size: var(--font-size-sm);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
    box-shadow: 0 4px 14px 0 rgba(23, 130, 206, 0.39);
}

.nav-cta:hover {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(23, 130, 206, 0.23);
    color: white;
}

.github-icon {
    opacity: 0.8;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-2);
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: all var(--transition-fast);
}

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

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: var(--space-24) 0 var(--space-16);
    overflow: hidden;
}

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

.hero-gradient {
    position: absolute;
    top: -50%;
    left: 50%;
    transform: translateX(-50%);
    width: 150%;
    height: 150%;
    background: var(--gradient-hero);
    opacity: 0.8;
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 20%, transparent 70%);
}

.hero-header {
    text-align: center;
    margin-bottom: var(--space-12);
}

.hero-layout {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    gap: var(--space-8);
}

.hero-container {
    flex: 1;
    max-width: 600px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: rgba(23, 130, 206, 0.1);
    border: 1px solid rgba(23, 130, 206, 0.2);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-primary-light);
    margin-bottom: var(--space-6);
    animation: fadeInUp 0.6s ease forwards;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--color-success);
    border-radius: var(--radius-full);
    animation: pulse 2s infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

.hero-title {
    font-size: clamp(var(--font-size-4xl), 6vw, var(--font-size-6xl));
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-6);
    animation: fadeInUp 0.6s ease 0.1s forwards;
    opacity: 0;
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    max-width: 560px;
    margin-bottom: var(--space-8);
    animation: fadeInUp 0.6s ease 0.2s forwards;
    opacity: 0;
}

.hero-actions {
    display: flex;
    gap: var(--space-4);
    margin-bottom: var(--space-12);
    animation: fadeInUp 0.6s ease 0.3s forwards;
    opacity: 0;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 60px rgba(23, 130, 206, 0.4);
}

.btn-secondary {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    color: var(--color-text);
}

.btn-secondary:hover {
    background: var(--color-bg-tertiary);
    border-color: var(--color-border-hover);
}

.btn-large {
    padding: var(--space-4) var(--space-8);
    font-size: var(--font-size-base);
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: var(--space-6);
    animation: fadeInUp 0.6s ease 0.4s forwards;
    opacity: 0;
}

.stat {
    text-align: center;
}

.stat-value {
    display: block;
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-text);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--color-border);
}

.hero-visual {
    flex: 1;
    max-width: 550px;
    animation: fadeInRight 0.8s ease 0.5s forwards;
    opacity: 0;
    position: relative;
}

.hero-logo-bg {
    position: absolute;
    top: 50%;
    left: 80%;
    transform: translate(-50%, -50%) scale(1.5);
    width: 440px;
    opacity: 0.05;
    z-index: 0;
    pointer-events: none;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }

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

/* Terminal */
.terminal {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.terminal-header {
    display: flex;
    align-items: center;
    padding: var(--space-3) var(--space-4);
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
}

.terminal-buttons {
    display: flex;
    gap: var(--space-2);
}

.terminal-btn {
    width: 12px;
    height: 12px;
    border-radius: var(--radius-full);
}

.terminal-btn.red {
    background: #ff5f57;
}

.terminal-btn.yellow {
    background: #ffbd2e;
}

.terminal-btn.green {
    background: #28c840;
}

.terminal-title {
    flex: 1;
    text-align: center;
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.terminal-body {
    padding: var(--space-6);
}

.terminal-body pre {
    margin: 0;
    font-size: var(--font-size-sm);
    line-height: 1.8;
}

.term-comment {
    color: var(--color-text-muted);
}

.term-key {
    color: var(--color-accent);
}

.term-hash {
    color: var(--color-accent-secondary);
}

.term-value {
    color: var(--color-success);
}

.term-success {
    color: var(--color-success);
}

/* ============================================
   Sections Common
   ============================================ */

section {
    padding: var(--space-16) 0;
    position: relative;
    overflow: hidden;
}

.section-logo-bg {
    position: absolute;
    top: 50%;
    width: 440px;
    opacity: 0.05;
    z-index: 0;
    pointer-events: none;
}

.section-logo-bg.logo-shift-left {
    left: 20%;
    transform: translate(-50%, -50%) scale(1.5);
}

.section-logo-bg.logo-shift-right {
    left: 80%;
    transform: translate(-50%, -50%) scale(1.5);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--space-16);
    position: relative;
    z-index: 1;
}

.section-tag {
    display: inline-block;
    padding: var(--space-1) var(--space-4);
    background: rgba(23, 130, 206, 0.1);
    border: 1px solid rgba(23, 130, 206, 0.2);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-primary-light);
    margin-bottom: var(--space-4);
}

.section-title {
    font-size: clamp(var(--font-size-3xl), 4vw, var(--font-size-4xl));
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-4);
}

.section-description {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
}

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

.features {
    background: var(--color-bg-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
    justify-items: center;
}

.features-grid .feature-card:last-child:nth-child(3n+1) {
    grid-column: 2;
}

.feature-card {
    padding: var(--space-8);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
}

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

.feature-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background: rgba(23, 130, 206, 0.1);
    border-radius: var(--radius-lg);
    color: var(--color-primary-light);
    margin-bottom: var(--space-5);
}

.feature-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--space-3);
}

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

/* ============================================
   How It Works Section
   ============================================ */

.steps {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    max-width: 800px;
    margin: 0 auto;
}

.step {
    display: flex;
    gap: var(--space-6);
    padding: var(--space-5);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
}

.step:hover {
    border-color: var(--color-primary);
    box-shadow: 0 0 30px rgba(23, 130, 206, 0.1);
}

.step-number {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-xl);
    font-weight: 700;
}

.step-content {
    flex: 1;
}

.step-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--space-2);
}

.step-description {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-4);
}

.step-description code {
    padding: var(--space-1) var(--space-2);
    background: var(--color-surface);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    color: var(--color-accent);
}

.step-code {
    padding: var(--space-4);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
}

.step-code pre {
    margin: 0;
    font-size: var(--font-size-sm);
    line-height: 1.6;
}

.code-key {
    color: var(--color-accent);
}

.code-string {
    color: var(--color-success);
}

.code-comment {
    color: var(--color-text-muted);
}

.code-value {
    color: var(--color-success);
}

/* ============================================
   Architecture Section
   ============================================ */

.architecture {
    background: var(--color-bg-secondary);
}

.arch-diagram {
    max-width: 900px;
    margin: 0 auto var(--space-12);
    position: relative;
}

.arch-layer {
    padding: var(--space-8);
    background: var(--color-surface);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-2xl);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.arch-layer-label {
    font-size: var(--font-size-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-text-muted);
    margin-bottom: var(--space-6);
    text-align: center;
}

.arch-components {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-6);
    flex-wrap: wrap;
}

.arch-component {
    padding: var(--space-5);
    background: var(--color-bg);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-xl);
    text-align: center;
    min-width: 160px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: transform var(--transition-fast);
}

.arch-component:hover {
    transform: translateY(-2px);
    border-color: rgba(255, 255, 255, 0.15);
}

.arch-icon {
    display: flex;
    justify-content: center;
    color: var(--color-primary);
    margin-bottom: var(--space-3);
}

.arch-icon svg {
    filter: drop-shadow(0 0 8px rgba(37, 99, 235, 0.3));
}

.arch-name {
    font-weight: 600;
    font-size: var(--font-size-base);
    margin-bottom: var(--space-2);
    color: var(--color-text);
}

.arch-desc {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.arch-arrow {
    color: var(--color-primary);
    opacity: 0.5;
    font-size: var(--font-size-xl);
}

.arch-connector {
    display: flex;
    justify-content: center;
    color: var(--color-primary);
    opacity: 0.3;
    padding: var(--space-2) 0;
}

.arch-pod {
    margin-top: var(--space-6);
    padding: var(--space-8);
    background: var(--color-bg-tertiary);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-2xl);
    position: relative;
}

.arch-pod-label {
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-align: center;
    margin-bottom: var(--space-6);
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.arch-pod-containers {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-4);
    position: relative;
    z-index: 2;
}

.arch-container {
    padding: var(--space-4) var(--space-8);
    background: var(--color-surface);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.arch-container-icon {
    display: flex;
    justify-content: center;
    color: var(--color-text);
    margin-bottom: var(--space-2);
}

.arch-container-name {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text);
}

/* Architecture Flow Animation */
.arch-flow {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 60px;
    margin: var(--space-2) 0;
    position: relative;
    z-index: 1;
}

.flow-dot {
    width: 6px;
    height: 6px;
    background-color: var(--color-accent);
    border-radius: 50%;
    position: absolute;
    top: 0;
    opacity: 0;
    animation: flowDown 2s infinite linear;
    box-shadow: 0 0 8px var(--color-accent);
}

.flow-dot:nth-child(1) {
    animation-delay: 0s;
}

.flow-dot:nth-child(2) {
    animation-delay: 0.66s;
}

.flow-dot:nth-child(3) {
    animation-delay: 1.33s;
}

@keyframes flowDown {
    0% {
        top: 0;
        opacity: 0;
        transform: scale(0.5);
    }

    20% {
        opacity: 1;
        transform: scale(1);
    }

    80% {
        opacity: 1;
        transform: scale(1);
    }

    100% {
        top: 100%;
        opacity: 0;
        transform: scale(0.5);
    }
}

.arch-ebpf {
    position: relative;
    z-index: 2;
    margin-top: 0;
    padding: var(--space-4);
    background: rgba(16, 185, 129, 0.05);
    border: 1px dashed rgba(16, 185, 129, 0.4);
    border-radius: var(--radius-lg);
    text-align: center;
    color: var(--color-accent);
    font-weight: 500;
    font-size: var(--font-size-sm);
}

.arch-ebpf-label {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
}

.arch-ebpf-label::before {
    content: '';
    display: inline-block;
    width: 16px;
    height: 16px;
    background: url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' fill='none' stroke='%2310B981' stroke-width='2' stroke-linecap='round' stroke-linejoin='round' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M3 11c-2-2-2-6 2-6s4 2 4 4M21 11c2-2 2-6-2-6s-4 2-4 4M7 9h10a3 3 0 0 1 3 3v2a3 3 0 0 1-3 3H7a3 3 0 0 1-3-3v-2a3 3 0 0 1 3-3zM7 12h10M7 15h10M10 6L9 3M14 6l1-3M12 17v3'/%3E%3C/svg%3E") no-repeat center;
    background-size: contain;
}

.tech-stack {
    display: flex;
    justify-content: center;
    gap: var(--space-4);
    flex-wrap: wrap;
}

.tech-item {
    padding: var(--space-2) var(--space-4);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
}

.tech-name {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
}

/* ============================================
   Getting Started Section
   ============================================ */

.demo-form-container {
    max-width: 600px;
    margin: 0 auto;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.demo-form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-6);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.form-group-full {
    grid-column: 1 / -1;
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    font-family: inherit;
    font-size: var(--font-size-base);
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.2);
}

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

.form-actions {
    grid-column: 1 / -1;
    margin-top: var(--space-2);
}

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

.footer {
    padding: var(--space-12) 0;
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
}

.footer-content {
    text-align: center;
}

.footer-brand {
    display: inline-flex;
    align-items: center;
    gap: 0;
    font-size: var(--font-size-xl);
    font-weight: 800;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-2);
}

.footer-tagline {
    color: var(--color-text-muted);
    margin-bottom: var(--space-6);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--space-6);
    margin-bottom: var(--space-6);
}

.footer-links a {
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-text);
}

.footer-copyright {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 1024px) {
    .hero-visual {
        display: none;
    }

    .hero-container {
        max-width: 100%;
        text-align: center;
    }

    .hero-description {
        margin-left: auto;
        margin-right: auto;
    }

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

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

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

@media (max-width: 768px) {
    .nav-menu {
        position: absolute;
        top: calc(100% + var(--space-4));
        left: var(--space-6);
        right: var(--space-6);
        flex-direction: column;
        justify-content: flex-start;
        gap: var(--space-4);
        padding: var(--space-6);

        background: rgba(11, 15, 25, 0.95);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        border: 1px solid rgba(255, 255, 255, 0.08);
        border-radius: var(--radius-2xl);
        box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);

        opacity: 0;
        visibility: hidden;
        transform: translateY(-20px);
        transition: all var(--transition-base);
    }

    .nav-menu.active {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }

    .nav-cta {
        display: none;
    }

    .nav-toggle {
        display: flex;
        z-index: 1001;
    }

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

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

    .step-number {
        margin: 0 auto;
    }

    .arch-components {
        flex-direction: column;
    }

    .arch-arrow {
        transform: rotate(90deg);
    }

    .arch-pod-containers {
        flex-direction: column;
    }

    .arch-container-arrow {
        transform: rotate(90deg);
    }

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

    .demo-form {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-stats {
        flex-direction: column;
        gap: var(--space-4);
    }

    .stat-divider {
        width: 40px;
        height: 1px;
    }
}