/* ================================================
   WiCi — The Wireless AI Computing Box
   Modern Dark-Theme Startup Website
   ================================================ */

/* ---- CSS Custom Properties ---- */
:root {
    /* Colors */
    --bg-primary: #030014;
    --bg-secondary: #0a0a1a;
    --bg-card: rgba(15, 15, 35, 0.6);
    --bg-card-hover: rgba(25, 25, 55, 0.8);
    --bg-glass: rgba(255, 255, 255, 0.03);
    
    --text-primary: #f0f0f5;
    --text-secondary: #a0a0b8;
    --text-muted: #6b6b85;
    
    --accent-indigo: #6366f1;
    --accent-violet: #8b5cf6;
    --accent-cyan: #06b6d4;
    --accent-green: #22c55e;
    --accent-red: #f87171;
    --accent-amber: #fbbf24;
    
    --gradient-primary: linear-gradient(135deg, #6366f1, #8b5cf6, #06b6d4);
    --gradient-glow: linear-gradient(135deg, rgba(99,102,241,0.4), rgba(139,92,246,0.4), rgba(6,182,212,0.4));
    --gradient-card-border: linear-gradient(135deg, rgba(99,102,241,0.3), rgba(6,182,212,0.1), rgba(139,92,246,0.3));
    
    --border-subtle: rgba(255, 255, 255, 0.06);
    --border-light: rgba(255, 255, 255, 0.1);
    
    /* Typography */
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-heading: 'Space Grotesk', 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    
    /* Spacing */
    --section-pad: 120px;
    --container-max: 1200px;
    
    /* Effects */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-body);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

::selection {
    background: rgba(99, 102, 241, 0.3);
    color: #fff;
}

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

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

/* ---- Cursor Glow ---- */
.cursor-glow {
    position: fixed;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    pointer-events: none;
    z-index: 0;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.06) 0%, transparent 70%);
    transform: translate(-50%, -50%);
    transition: transform 0.1s ease-out;
    will-change: transform;
}

/* ---- Particle Canvas ---- */
#particleCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    opacity: 0.4;
}

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

/* ---- Section ---- */
.section {
    padding: var(--section-pad) 0;
    position: relative;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 72px;
}

.section-tag {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--accent-cyan);
    background: rgba(6, 182, 212, 0.1);
    border: 1px solid rgba(6, 182, 212, 0.2);
    padding: 6px 16px;
    border-radius: 100px;
    margin-bottom: 20px;
}

.section-title {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
}

.section-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

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

/* ---- Buttons ---- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.95rem;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.btn-sm {
    padding: 10px 20px;
    font-size: 0.85rem;
}

.btn-lg {
    padding: 16px 32px;
    font-size: 1rem;
    border-radius: var(--radius-lg);
}

.btn-primary {
    background: var(--gradient-primary);
    color: #fff;
    box-shadow: 0 4px 24px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(99, 102, 241, 0.5);
}

.btn-primary::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.2), transparent);
    opacity: 0;
    transition: var(--transition);
}

.btn-primary:hover::after {
    opacity: 1;
}

.btn-ghost {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-light);
    backdrop-filter: blur(8px);
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.btn-full {
    width: 100%;
    justify-content: center;
}

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

.navbar.scrolled {
    background: rgba(3, 0, 20, 0.85);
    backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--border-subtle);
    padding: 10px 0;
}

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

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.logo-icon {
    flex-shrink: 0;
}

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

.nav-link {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
}

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

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

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}

/* ---- Hero Section ---- */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 120px 0 80px;
    overflow: hidden;
}

.hero-bg-effects {
    position: absolute;
    inset: 0;
    overflow: hidden;
    z-index: 0;
}

.hero-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.4;
    animation: orbFloat 8s ease-in-out infinite;
}

.hero-orb-1 {
    width: 500px;
    height: 500px;
    background: var(--accent-indigo);
    top: -10%;
    left: -5%;
    animation-delay: 0s;
}

.hero-orb-2 {
    width: 400px;
    height: 400px;
    background: var(--accent-violet);
    top: 20%;
    right: -10%;
    animation-delay: -3s;
}

.hero-orb-3 {
    width: 300px;
    height: 300px;
    background: var(--accent-cyan);
    bottom: -5%;
    left: 30%;
    animation-delay: -5s;
}

@keyframes orbFloat {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.05); }
    66% { transform: translate(-20px, 20px) scale(0.95); }
}

.grid-overlay {
    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 30%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.hero-content {
    text-align: center;
    max-width: 900px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--accent-green);
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.2);
    padding: 8px 20px;
    border-radius: 100px;
    margin-bottom: 32px;
}

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

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.5); }
}

.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(2.8rem, 7vw, 5.5rem);
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -0.03em;
    margin-bottom: 24px;
}

.title-line {
    display: block;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 40px;
    line-height: 1.8;
}

.hero-subtitle strong {
    color: var(--text-primary);
    font-weight: 600;
}

.hero-cta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 56px;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    padding: 24px 40px;
    background: var(--bg-glass);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    backdrop-filter: blur(12px);
    flex-wrap: wrap;
}

.hero-stat {
    text-align: center;
}

.hero-stat-value {
    display: block;
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

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

/* Hero Visual / Device Scene */
.hero-visual {
    margin-top: 60px;
    width: 100%;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero-device-scene {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    padding: 40px 20px;
}

.device {
    flex-shrink: 0;
}

.phone-device {
    width: 160px;
}

.device-screen {
    background: linear-gradient(145deg, #12122a, #0a0a1e);
    border: 2px solid rgba(99, 102, 241, 0.3);
    border-radius: 20px;
    padding: 12px;
    box-shadow: 0 0 40px rgba(99, 102, 241, 0.15), inset 0 1px 0 rgba(255,255,255,0.05);
    position: relative;
    overflow: hidden;
}

.screen-dots {
    display: flex;
    gap: 4px;
}

.screen-dots span {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: rgba(255,255,255,0.15);
}

.screen-dots span:first-child { background: #f87171; }
.screen-dots span:nth-child(2) { background: #fbbf24; }
.screen-dots span:last-child { background: #22c55e; }

.ai-chat {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.chat-msg {
    font-size: 0.6rem;
    padding: 8px 10px;
    border-radius: 10px;
    line-height: 1.4;
}

.user-msg {
    background: rgba(99, 102, 241, 0.2);
    border: 1px solid rgba(99, 102, 241, 0.3);
    align-self: flex-end;
    border-bottom-right-radius: 4px;
    color: var(--text-primary);
}

.ai-msg {
    background: rgba(6, 182, 212, 0.1);
    border: 1px solid rgba(6, 182, 212, 0.2);
    align-self: flex-start;
    border-bottom-left-radius: 4px;
    color: var(--accent-cyan);
}

.typing-indicator {
    display: inline-flex;
    gap: 3px;
    margin-right: 6px;
}

.typing-indicator span {
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--accent-cyan);
    animation: typingBounce 1.4s ease-in-out infinite;
}

.typing-indicator span:nth-child(2) { animation-delay: 0.15s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.3s; }

@keyframes typingBounce {
    0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
    30% { transform: translateY(-4px); opacity: 1; }
}

.phone-label {
    text-align: center;
    font-size: 0.6rem;
    color: var(--text-muted);
    margin-top: 10px;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* Connection Beam */
.connection-beam {
    flex: 1;
    max-width: 200px;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.beam-line {
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-indigo), var(--accent-cyan));
    border-radius: 2px;
    position: relative;
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.5);
}

.beam-particles {
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    transform: translateY(-50%);
}

.beam-particles span {
    position: absolute;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent-cyan);
    box-shadow: 0 0 10px var(--accent-cyan);
    animation: beamParticle 2s linear infinite;
}

.beam-particles span:nth-child(1) { animation-delay: 0s; }
.beam-particles span:nth-child(2) { animation-delay: 0.4s; }
.beam-particles span:nth-child(3) { animation-delay: 0.8s; }
.beam-particles span:nth-child(4) { animation-delay: 1.2s; }
.beam-particles span:nth-child(5) { animation-delay: 1.6s; }

@keyframes beamParticle {
    0% { left: 0; opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { left: calc(100% - 6px); opacity: 0; }
}

.beam-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.7rem;
    color: var(--accent-cyan);
    font-family: var(--font-mono);
    white-space: nowrap;
}

/* Router Device */
.router-device {
    width: 140px;
}

.router-body {
    background: linear-gradient(145deg, #12122a, #0a0a1e);
    border: 2px solid rgba(34, 197, 94, 0.3);
    border-radius: 16px;
    padding: 16px;
    position: relative;
    box-shadow: 0 0 40px rgba(34, 197, 94, 0.1), inset 0 1px 0 rgba(255,255,255,0.05);
}

.router-leds {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
}

.led {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255,255,255,0.1);
}

.led-active {
    background: var(--accent-green);
    box-shadow: 0 0 8px var(--accent-green);
    animation: ledBlink 3s ease-in-out infinite;
}

.led-active:nth-child(2) {
    animation-delay: -1s;
}

@keyframes ledBlink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.router-gpu-badge {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--accent-green);
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.3);
    padding: 4px 12px;
    border-radius: 6px;
    margin-bottom: 12px;
}

.router-antennas {
    display: flex;
    justify-content: space-between;
    padding: 0 4px;
}

.antenna {
    width: 3px;
    height: 24px;
    background: linear-gradient(to top, rgba(255,255,255,0.3), rgba(255,255,255,0.1));
    border-radius: 3px;
    position: relative;
}

.antenna::after {
    content: '';
    position: absolute;
    top: -4px;
    left: 50%;
    transform: translateX(-50%);
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: rgba(255,255,255,0.2);
}

.router-label {
    text-align: center;
    font-size: 0.6rem;
    color: var(--text-muted);
    margin-top: 10px;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    animation: scrollBounce 2s ease-in-out infinite;
}

.scroll-indicator span {
    font-size: 0.75rem;
    color: var(--text-muted);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    font-family: var(--font-mono);
}

.scroll-arrow {
    color: var(--text-muted);
}

@keyframes scrollBounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(8px); }
}

/* ---- Problem Section ---- */
.problem-section {
    background: linear-gradient(180deg, var(--bg-primary), var(--bg-secondary));
}

.problem-grid {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 32px;
    align-items: start;
}

.problem-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    padding: 40px 32px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.problem-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius-xl);
    padding: 1px;
    background: var(--gradient-card-border);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: var(--transition);
}

.problem-card:hover::before {
    opacity: 1;
}

.problem-card:hover {
    transform: translateY(-4px);
    background: var(--bg-card-hover);
}

.problem-card-icon {
    margin-bottom: 20px;
}

.problem-card-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.problem-card-badge {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 100px;
    margin-bottom: 16px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.badge-danger {
    color: var(--accent-red);
    background: rgba(248, 113, 113, 0.1);
    border: 1px solid rgba(248, 113, 113, 0.2);
}

.badge-warning {
    color: var(--accent-amber);
    background: rgba(251, 191, 36, 0.1);
    border: 1px solid rgba(251, 191, 36, 0.2);
}

.problem-card-desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.7;
}

.problem-card-desc strong {
    color: var(--text-primary);
}

.problem-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.problem-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Problem Gap */
.problem-gap {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 0;
    gap: 12px;
}

.gap-bridge {
    animation: gapPulse 3s ease-in-out infinite;
}

@keyframes gapPulse {
    0%, 100% { transform: scale(1); opacity: 0.7; }
    50% { transform: scale(1.1); opacity: 1; }
}

.gap-label {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 700;
    color: var(--accent-amber);
    text-transform: uppercase;
    letter-spacing: 0.15em;
}

.gap-desc {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-align: center;
    max-width: 150px;
    line-height: 1.5;
}

/* ---- Solution Section ---- */
.solution-section {
    background: var(--bg-secondary);
    overflow: hidden;
}

.solution-bg-effects {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.solution-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 800px;
    height: 600px;
    background: radial-gradient(ellipse, rgba(99, 102, 241, 0.08), transparent 70%);
}

/* Solution Diagram */
.solution-diagram {
    margin-bottom: 80px;
}

.diagram-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    padding: 48px 32px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    flex-wrap: wrap;
}

.diagram-node {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 24px 20px;
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-subtle);
    min-width: 140px;
    transition: var(--transition);
}

.diagram-node:hover {
    transform: translateY(-4px);
    border-color: var(--border-light);
}

.diagram-app .node-icon { color: var(--accent-indigo); }
.diagram-wici .node-icon { color: var(--accent-violet); }
.diagram-router .node-icon { color: var(--accent-green); }

.node-label {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.95rem;
}

.node-sublabel {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

.diagram-arrow {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

.diagram-arrow span {
    font-size: 0.7rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* Solution Steps */
.solution-steps {
    display: flex;
    flex-direction: column;
    gap: 32px;
    max-width: 700px;
    margin: 0 auto;
}

.step {
    display: flex;
    gap: 24px;
    align-items: flex-start;
    padding: 32px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

.step:hover {
    border-color: var(--border-light);
    transform: translateX(8px);
}

.step-number {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    flex-shrink: 0;
    line-height: 1;
}

.step-icon {
    flex-shrink: 0;
    width: 52px;
    height: 52px;
    border-radius: var(--radius-md);
    background: rgba(99, 102, 241, 0.08);
    border: 1px solid rgba(99, 102, 241, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
}

.step-content h3 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.step-content p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ---- Features Section ---- */
.features-section {
    background: linear-gradient(180deg, var(--bg-secondary), var(--bg-primary));
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.feature-card {
    padding: 40px 32px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-light);
    background: var(--bg-card-hover);
}

.feature-icon {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.feature-icon-cost {
    background: rgba(34, 197, 94, 0.1);
    color: var(--accent-green);
    border: 1px solid rgba(34, 197, 94, 0.2);
}

.feature-icon-power {
    background: rgba(99, 102, 241, 0.1);
    color: var(--accent-indigo);
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.feature-icon-privacy {
    background: rgba(139, 92, 246, 0.1);
    color: var(--accent-violet);
    border: 1px solid rgba(139, 92, 246, 0.2);
}

.feature-icon-friction {
    background: rgba(6, 182, 212, 0.1);
    color: var(--accent-cyan);
    border: 1px solid rgba(6, 182, 212, 0.2);
}

.feature-title {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.feature-desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
}

.feature-tag {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--accent-cyan);
    background: rgba(6, 182, 212, 0.08);
    border: 1px solid rgba(6, 182, 212, 0.15);
    padding: 4px 12px;
    border-radius: 100px;
    letter-spacing: 0.05em;
}

/* ---- Metrics Section ---- */
.metrics-section {
    background: var(--bg-primary);
    overflow: hidden;
}

.metrics-bg {
    position: absolute;
    inset: 0;
}

.metrics-glow-1 {
    position: absolute;
    top: 20%;
    left: -10%;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: rgba(99, 102, 241, 0.06);
    filter: blur(100px);
}

.metrics-glow-2 {
    position: absolute;
    bottom: 10%;
    right: -10%;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: rgba(6, 182, 212, 0.06);
    filter: blur(100px);
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.metric-card {
    text-align: center;
    padding: 48px 32px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    transition: var(--transition);
    position: relative;
}

.metric-card:hover {
    transform: translateY(-8px);
    border-color: var(--border-light);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.metric-visual {
    position: relative;
    width: 120px;
    height: 120px;
    margin: 0 auto 24px;
}

.metric-ring {
    width: 100%;
    height: 100%;
}

.metric-value-wrap {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.metric-prefix {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-muted);
}

.metric-value {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.metric-suffix {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-muted);
}

.metric-label {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.metric-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 20px;
}

.metric-bar {
    height: 4px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 4px;
    overflow: hidden;
}

.metric-bar-fill {
    height: 100%;
    width: 0;
    background: var(--gradient-primary);
    border-radius: 4px;
    transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---- Tech / Architecture Section ---- */
.tech-section {
    background: linear-gradient(180deg, var(--bg-primary), var(--bg-secondary));
}

.tech-architecture {
    max-width: 600px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 0;
}

.arch-layer {
    padding: 28px 32px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

.arch-layer:hover {
    border-color: var(--border-light);
}

.arch-label {
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 16px;
    color: var(--text-muted);
}

.arch-items {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.arch-chip {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    padding: 6px 14px;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-subtle);
    color: var(--text-secondary);
    transition: var(--transition);
}

.arch-chip:hover {
    border-color: var(--border-light);
    background: rgba(255, 255, 255, 0.06);
}

.arch-chip.highlight {
    color: var(--accent-violet);
    background: rgba(139, 92, 246, 0.08);
    border-color: rgba(139, 92, 246, 0.2);
}

.arch-chip.accent {
    color: var(--accent-green);
    background: rgba(34, 197, 94, 0.08);
    border-color: rgba(34, 197, 94, 0.2);
}

.arch-connector {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 48px;
    position: relative;
}

.arch-connector::before {
    content: '';
    width: 2px;
    height: 100%;
    background: linear-gradient(180deg, var(--accent-indigo), var(--accent-cyan));
    opacity: 0.4;
}

.pulse-dot {
    position: absolute;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--accent-cyan);
    box-shadow: 0 0 12px var(--accent-cyan);
    animation: pulseDot 2s ease-in-out infinite;
}

@keyframes pulseDot {
    0%, 100% { transform: scale(0.8); opacity: 0.5; }
    50% { transform: scale(1.3); opacity: 1; }
}

.arch-connector-label {
    position: absolute;
    right: -80px;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--text-muted);
    white-space: nowrap;
}

/* ---- CTA / Contact Section ---- */
.cta-section {
    background: var(--bg-secondary);
    overflow: hidden;
}

.cta-bg-effects {
    position: absolute;
    inset: 0;
}

.cta-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
}

.cta-orb-1 {
    width: 400px;
    height: 400px;
    background: rgba(99, 102, 241, 0.1);
    top: -20%;
    right: -10%;
}

.cta-orb-2 {
    width: 300px;
    height: 300px;
    background: rgba(6, 182, 212, 0.1);
    bottom: -10%;
    left: -5%;
}

.cta-content {
    max-width: 640px;
    margin: 0 auto;
    text-align: center;
}

.cta-title {
    font-family: var(--font-heading);
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 16px;
}

.cta-desc {
    font-size: 1.05rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.7;
}

.cta-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
    text-align: left;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

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

.form-input {
    font-family: var(--font-body);
    font-size: 0.95rem;
    padding: 14px 18px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    transition: var(--transition);
    outline: none;
}

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

.form-input:focus {
    border-color: var(--accent-indigo);
    background: rgba(99, 102, 241, 0.05);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-select {
    appearance: none;
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%236b6b85' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
}

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

.form-textarea {
    resize: vertical;
    min-height: 80px;
}

.cta-disclaimer {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 12px;
    text-align: center;
}

/* ---- Footer ---- */
.footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border-subtle);
    padding: 64px 0 32px;
}

.footer-top {
    display: flex;
    justify-content: space-between;
    gap: 64px;
    margin-bottom: 48px;
}

.footer-brand {
    max-width: 280px;
}

.footer-tagline {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-top: 16px;
    line-height: 1.6;
}

.footer-links-group {
    display: flex;
    gap: 64px;
}

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

.footer-col h4 {
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.footer-col a {
    font-size: 0.9rem;
    color: var(--text-muted);
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 32px;
    border-top: 1px solid var(--border-subtle);
}

.footer-bottom p {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.footer-legal {
    display: flex;
    gap: 24px;
}

.footer-legal a {
    font-size: 0.8rem;
    color: var(--text-muted);
}

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

/* ---- Animations ---- */
.animate-in {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.animate-in:nth-child(1) { animation-delay: 0.1s; }
.animate-in:nth-child(2) { animation-delay: 0.2s; }
.animate-in:nth-child(3) { animation-delay: 0.35s; }
.animate-in:nth-child(4) { animation-delay: 0.5s; }
.animate-in:nth-child(5) { animation-delay: 0.65s; }
.animate-in:nth-child(6) { animation-delay: 0.8s; }

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

/* Scroll reveal animations */
.reveal-up,
.reveal-left,
.reveal-right {
    opacity: 0;
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal-up {
    transform: translateY(40px);
}

.reveal-left {
    transform: translateX(-40px);
}

.reveal-right {
    transform: translateX(40px);
}

.reveal-up.revealed,
.reveal-left.revealed,
.reveal-right.revealed {
    opacity: 1;
    transform: translate(0);
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
    .problem-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .problem-gap {
        flex-direction: row;
        padding: 20px 0;
    }
    
    .metrics-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-top {
        flex-direction: column;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    :root {
        --section-pad: 80px;
    }
    
    .nav-links {
        display: none;
        position: fixed;
        inset: 0;
        background: rgba(3, 0, 20, 0.95);
        backdrop-filter: blur(20px);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 24px;
        z-index: 999;
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .nav-links .nav-link {
        font-size: 1.5rem;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .nav-actions .btn {
        display: none;
    }
    
    .hero-title {
        font-size: clamp(2.2rem, 8vw, 3.5rem);
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 16px;
        padding: 24px;
    }
    
    .hero-stat-divider {
        width: 40px;
        height: 1px;
    }
    
    .hero-device-scene {
        flex-direction: column;
        gap: 16px;
    }
    
    .connection-beam {
        transform: rotate(90deg);
        max-width: 120px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer-links-group {
        flex-direction: column;
        gap: 32px;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
    
    .diagram-flow {
        flex-direction: column;
    }
    
    .diagram-arrow {
        transform: rotate(90deg);
    }
    
    .step {
        flex-direction: column;
        gap: 16px;
    }
    
    .step:hover {
        transform: translateY(-4px);
    }
    
    .arch-connector-label {
        right: auto;
        position: static;
        margin-top: 4px;
    }
}

@media (max-width: 480px) {
    .hero-cta {
        flex-direction: column;
        width: 100%;
    }
    
    .hero-cta .btn {
        width: 100%;
        justify-content: center;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
}

/* ---- Enhanced Phone Device ---- */
.screen-status-bar {
    display: flex;
    gap: 6px;
    align-items: center;
    margin-left: auto;
}

.phone-apps {
    display: flex;
    gap: 6px;
    justify-content: center;
    margin-top: 10px;
    padding-top: 8px;
    border-top: 1px solid rgba(255,255,255,0.06);
}

.phone-app-icon {
    width: 28px;
    height: 28px;
    border-radius: 6px;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    cursor: default;
}

.phone-app-icon:hover {
    background: rgba(255,255,255,0.08);
    border-color: rgba(255,255,255,0.15);
    transform: scale(1.1);
}

.screen-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}

/* ---- Enhanced Connection Beam ---- */
.beam-wifi-waves {
    position: absolute;
    top: -30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.wifi-wave {
    display: block;
    width: 20px;
    height: 10px;
    border: 2px solid rgba(6, 182, 212, 0.3);
    border-bottom: none;
    border-radius: 50% 50% 0 0;
    margin-bottom: -3px;
    animation: wifiPulse 2s ease-in-out infinite;
}

.wifi-wave:nth-child(1) { width: 32px; height: 16px; animation-delay: 0s; }
.wifi-wave:nth-child(2) { width: 22px; height: 11px; animation-delay: 0.2s; }
.wifi-wave:nth-child(3) { width: 12px; height: 6px; animation-delay: 0.4s; }

@keyframes wifiPulse {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 1; }
}

.beam-data-label {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    color: var(--accent-violet);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    white-space: nowrap;
    opacity: 0.7;
}

/* ---- WiCi Box Device ---- */
.wici-box-device {
    width: 180px;
}

.wici-box-body {
    background: linear-gradient(145deg, #0f0f25, #080818);
    border: 2px solid rgba(34, 197, 94, 0.3);
    border-radius: 16px;
    padding: 14px;
    position: relative;
    box-shadow: 
        0 0 40px rgba(34, 197, 94, 0.08),
        0 0 80px rgba(34, 197, 94, 0.04),
        inset 0 1px 0 rgba(255,255,255,0.05);
}

.wici-box-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
}

.box-leds {
    display: flex;
    gap: 5px;
}

.box-logo {
    font-family: var(--font-heading);
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--accent-green);
    letter-spacing: 0.05em;
    opacity: 0.8;
}

.wici-gpu-visual {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    margin-bottom: 10px;
}

.gpu-fan {
    animation: gpuFanSpin 1s linear infinite;
    transform-origin: 70px 26px;
}

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

.gpu-activity-bar {
    width: 100%;
    height: 4px;
    background: rgba(34, 197, 94, 0.1);
    border-radius: 4px;
    overflow: hidden;
}

.gpu-activity-fill {
    width: 75%;
    height: 100%;
    background: linear-gradient(90deg, #22c55e, #06b6d4);
    border-radius: 4px;
    animation: gpuActivity 2s ease-in-out infinite;
}

@keyframes gpuActivity {
    0% { width: 60%; opacity: 0.7; }
    50% { width: 90%; opacity: 1; }
    100% { width: 60%; opacity: 0.7; }
}

.wici-box-antennas {
    display: flex;
    justify-content: space-between;
    padding: 0 8px;
}

/* ---- Applications Section ---- */
.apps-section {
    background: var(--bg-primary);
}

.apps-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
}

.app-card {
    padding: 32px 28px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.app-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition);
}

.app-card:hover::after {
    opacity: 1;
}

.app-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-light);
    background: var(--bg-card-hover);
}

.app-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.app-icon-agents {
    background: rgba(168, 85, 247, 0.1);
    color: #a855f7;
    border: 1px solid rgba(168, 85, 247, 0.2);
}

.app-icon-llm {
    background: rgba(99, 102, 241, 0.1);
    color: var(--accent-indigo);
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.app-icon-video {
    background: rgba(6, 182, 212, 0.1);
    color: var(--accent-cyan);
    border: 1px solid rgba(6, 182, 212, 0.2);
}

.app-icon-gaming {
    background: rgba(34, 197, 94, 0.1);
    color: var(--accent-green);
    border: 1px solid rgba(34, 197, 94, 0.2);
}

.app-card h3 {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.app-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
}

.app-tag {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--accent-cyan);
    background: rgba(6, 182, 212, 0.08);
    border: 1px solid rgba(6, 182, 212, 0.15);
    padding: 3px 10px;
    border-radius: 100px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

/* ---- Form Success State ---- */
.form-success {
    text-align: center;
    padding: 48px 24px;
    animation: fadeInUp 0.6s ease forwards;
}

.form-success svg {
    margin: 0 auto 20px;
}

.form-success h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-green);
    margin-bottom: 12px;
}

.form-success p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.7;
}

/* ---- Responsive: Apps Grid ---- */
@media (max-width: 1024px) {
    .apps-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .apps-grid {
        grid-template-columns: 1fr;
    }
}



/* ---- Misc / Utility ---- */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}