/* ═══════════════════════════════════════════
   CUBE-IN Solutions — Main Stylesheet
   ═══════════════════════════════════════════ */

/* ── Custom Properties ── */
:root {
  --bg-primary: #0a0e1a;
  --bg-alt: #0d1321;
  --bg-card: #111827;
  --color-primary: #3578C6;
  --color-primary-light: #5B9BD5;
  --color-glow: rgba(53,120,198,0.3);
  --color-navy: #1B2A4A;
  --text-primary: #ffffff;
  --text-secondary: #b0b8c8;
  --text-muted: #6b7280;
  --color-success: #10b981;
  --font-main: 'Inter', sans-serif;
  --nav-height: 80px;
  --section-padding: 100px 0;
  --max-width: 1200px;
  --border-radius: 12px;
  --transition: 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

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

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

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

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

ul {
  list-style: none;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: var(--section-padding);
  position: relative;
}

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

.section-title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  color: var(--text-primary);
  text-align: center;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.section-subtitle {
  text-align: center;
  color: var(--text-muted);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto 16px;
}

.section-philosophy {
  text-align: center;
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 680px;
  margin: 0 auto 60px;
  line-height: 1.7;
  font-style: italic;
  padding: 0 20px;
}

.highlight {
  color: var(--color-primary);
}

/* ── Glass Card ── */
.glass-card {
  background: rgba(17,24,39,0.7);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(53,120,198,0.15);
  border-radius: var(--border-radius);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.glass-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(53,120,198,0.15);
  border-color: rgba(53,120,198,0.3);
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  border-radius: 8px;
  font-family: var(--font-main);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  text-decoration: none;
  gap: 8px;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 4px 15px rgba(53,120,198,0.3);
}

.btn-primary:hover {
  background: var(--color-primary-light);
  color: #fff;
  box-shadow: 0 0 30px var(--color-glow);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary-light);
  border: 2px solid var(--color-primary);
}

.btn-outline:hover {
  background: rgba(53,120,198,0.1);
  color: #fff;
  border-color: var(--color-primary-light);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 16px 40px;
  font-size: 1.1rem;
}

.btn-full {
  width: 100%;
}

/* ═══════════════════════════════════════════
   NAVIGATION
   ═══════════════════════════════════════════ */
#navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  transition: background var(--transition), box-shadow var(--transition);
}

#navbar.scrolled {
  background: rgba(17,24,39,0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 2px 20px rgba(0,0,0,0.3);
}

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

.nav-logo img {
  height: 44px;
  width: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: 6px;
  transition: color var(--transition), background var(--transition);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 16px;
  right: 16px;
  height: 2px;
  background: var(--color-primary);
  transform: scaleX(0);
  transition: transform var(--transition);
}

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

.nav-links a:hover::after {
  transform: scaleX(1);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Language Switcher */
.lang-switcher {
  position: relative;
}

.lang-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(53,120,198,0.15);
  border: 1px solid rgba(53,120,198,0.3);
  color: var(--text-secondary);
  padding: 8px 14px;
  border-radius: 6px;
  font-family: var(--font-main);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
}

.lang-btn:hover {
  background: rgba(53,120,198,0.25);
  color: var(--text-primary);
}

.lang-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: var(--bg-card);
  border: 1px solid rgba(53,120,198,0.2);
  border-radius: 8px;
  padding: 6px;
  min-width: 180px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all var(--transition);
  box-shadow: 0 10px 40px rgba(0,0,0,0.4);
  z-index: 1100;
}

.lang-dropdown.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-option {
  display: block;
  width: 100%;
  padding: 10px 14px;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-family: var(--font-main);
  font-size: 0.9rem;
  text-align: left;
  cursor: pointer;
  border-radius: 6px;
  transition: all var(--transition);
}

.lang-option:hover {
  background: rgba(53,120,198,0.15);
  color: var(--text-primary);
}

.lang-option.active {
  color: var(--color-primary);
  background: rgba(53,120,198,0.1);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-secondary);
  transition: all var(--transition);
  border-radius: 2px;
}

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

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

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

/* ═══════════════════════════════════════════
   HERO
   ═══════════════════════════════════════════ */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

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

.hero-gradient {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(10,14,26,0.15) 0%, rgba(10,14,26,0.5) 40%, var(--bg-primary) 75%);
  z-index: 2;
}

/* 3D Cube */
.cube-scene {
  position: absolute;
  top: 38%;
  left: 50%;
  transform: translate(-50%, -50%);
  perspective: 800px;
  z-index: 1;
}

.cube-3d {
  width: 280px;
  height: 280px;
  position: relative;
  transform-style: preserve-3d;
  animation: cubeRotate 20s linear infinite;
}

.cube-scene::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 320px;
  height: 320px;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, rgba(53,120,198,0.2) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.cube-face {
  position: absolute;
  width: 280px;
  height: 280px;
  border: 1.5px solid rgba(53,120,198,0.35);
  background: rgba(53,120,198,0.06);
  box-shadow: inset 0 0 30px rgba(53,120,198,0.05);
}

.cube-front  { transform: translateZ(140px); }
.cube-back   { transform: rotateY(180deg) translateZ(140px); }
.cube-right  { transform: rotateY(90deg) translateZ(140px); }
.cube-left   { transform: rotateY(-90deg) translateZ(140px); }
.cube-top    { transform: rotateX(90deg) translateZ(140px); background: rgba(53,120,198,0.1); }
.cube-bottom { transform: rotateX(-90deg) translateZ(140px); }

@keyframes cubeRotate {
  0%   { transform: rotateX(-20deg) rotateY(0deg); }
  100% { transform: rotateX(-20deg) rotateY(360deg); }
}

/* Floating Particles */
.particles {
  position: absolute;
  inset: 0;
  z-index: 1;
  overflow: hidden;
}

.particle {
  position: absolute;
  background: var(--color-primary);
  opacity: 0.15;
  animation: particleFloat linear infinite;
}

.particle-square {
  width: 6px;
  height: 6px;
  border-radius: 1px;
}

.particle-line {
  width: 20px;
  height: 2px;
  border-radius: 1px;
}

.particle-dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
}

@keyframes particleFloat {
  0% {
    transform: translateY(100vh) rotate(0deg);
    opacity: 0;
  }
  10% {
    opacity: 0.15;
  }
  90% {
    opacity: 0.15;
  }
  100% {
    transform: translateY(-100px) rotate(360deg);
    opacity: 0;
  }
}

.hero-content {
  position: relative;
  z-index: 3;
  text-align: center;
  max-width: 800px;
  padding: 0 24px;
}

.hero-tagline {
  display: inline-block;
  padding: 8px 20px;
  background: rgba(53,120,198,0.12);
  border: 1px solid rgba(53,120,198,0.25);
  border-radius: 50px;
  color: var(--color-primary-light);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  margin-bottom: 24px;
  opacity: 0;
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 900;
  color: var(--text-primary);
  line-height: 1.15;
  margin-bottom: 28px;
  letter-spacing: -0.03em;
  opacity: 0;
}

.hero-subtitle {
  font-size: clamp(1.1rem, 2.5vw, 1.35rem);
  color: var(--text-secondary);
  margin-bottom: 44px;
  margin-top: 0;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  opacity: 0;
}

.hero-cta {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  opacity: 0;
}

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
}

.scroll-arrow {
  width: 24px;
  height: 24px;
  border-right: 2px solid var(--color-primary);
  border-bottom: 2px solid var(--color-primary);
  transform: rotate(45deg);
  animation: scrollBounce 2s ease-in-out infinite;
  opacity: 0.6;
}

@keyframes scrollBounce {
  0%, 100% { transform: rotate(45deg) translateY(0); opacity: 0.6; }
  50% { transform: rotate(45deg) translateY(10px); opacity: 1; }
}

/* ═══════════════════════════════════════════
   ABOUT / FEATURES
   ═══════════════════════════════════════════ */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 80px;
}

.feature-card {
  padding: 32px 24px;
  text-align: center;
}

.feature-icon {
  margin-bottom: 20px;
  display: flex;
  justify-content: center;
}

.feature-card h3 {
  color: var(--text-primary);
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.feature-card p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Counters */
.counters-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.counter-item {
  padding: 24px;
}

.counter-number {
  font-size: clamp(2.5rem, 4vw, 3.5rem);
  font-weight: 900;
  color: var(--color-primary);
  line-height: 1;
}

.counter-prefix {
  font-size: clamp(2rem, 3vw, 2.5rem);
  font-weight: 900;
  color: var(--color-primary);
}

.counter-suffix {
  font-size: clamp(2rem, 3vw, 2.5rem);
  font-weight: 900;
  color: var(--color-primary);
}

.counter-label {
  display: block;
  margin-top: 8px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Highlight Blocks */
.highlights-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  margin-top: 80px;
}

.highlight-block {
  padding: 36px 32px;
  border-color: rgba(53,120,198,0.25);
  background: linear-gradient(135deg, rgba(17,24,39,0.8) 0%, rgba(27,42,74,0.4) 100%);
  position: relative;
  overflow: hidden;
}

.highlight-block::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
}

.highlight-block:hover {
  border-color: rgba(53,120,198,0.4);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(53,120,198,0.15);
}

.highlight-block-icon {
  margin-bottom: 20px;
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(53,120,198,0.1);
  border-radius: 12px;
  border: 1px solid rgba(53,120,198,0.2);
}

.highlight-block h3 {
  color: var(--text-primary);
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 14px;
  letter-spacing: -0.01em;
}

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

/* ═══════════════════════════════════════════
   SERVICES
   ═══════════════════════════════════════════ */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  padding: 40px 28px;
  text-align: center;
}

.service-icon {
  margin-bottom: 24px;
  display: flex;
  justify-content: center;
}

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

.service-card p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ═══════════════════════════════════════════
   PROCESS / TIMELINE
   ═══════════════════════════════════════════ */
.timeline {
  position: relative;
  max-width: 700px;
  margin: 0 auto 60px;
  padding-left: 40px;
}

.timeline-line {
  position: absolute;
  left: 20px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-primary), rgba(53,120,198,0.1));
}

.timeline-step {
  position: relative;
  margin-bottom: 40px;
}

.timeline-step:last-child {
  margin-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: -40px;
  top: 24px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  box-shadow: 0 0 20px var(--color-glow);
}

.timeline-dot span {
  color: #fff;
  font-weight: 800;
  font-size: 1rem;
}

.timeline-content {
  padding: 24px 28px;
  margin-left: 24px;
}

.timeline-content h3 {
  color: var(--text-primary);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.timeline-content p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Prototype callout */
.prototype-callout {
  max-width: 700px;
  margin: 0 auto;
  padding: 28px 32px;
  display: flex;
  align-items: flex-start;
  gap: 20px;
  border-color: rgba(16,185,129,0.3);
  background: rgba(16,185,129,0.05);
}

.prototype-callout:hover {
  border-color: rgba(16,185,129,0.5);
  transform: none;
}

.callout-icon {
  flex-shrink: 0;
  margin-top: 2px;
}

.callout-text h4 {
  color: var(--color-success);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.callout-text p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ═══════════════════════════════════════════
   PRICING
   ═══════════════════════════════════════════ */
.pricing-main {
  max-width: 600px;
  margin: 0 auto 48px;
  padding: 40px;
  text-align: center;
}

.price-display {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.price-amount {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}

.price-number {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 900;
  color: var(--color-primary);
  letter-spacing: -0.02em;
}

.price-divider {
  font-size: 2rem;
  color: var(--text-muted);
  font-weight: 300;
}

.price-number-alt {
  font-size: clamp(2rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--color-primary-light);
}

.price-unit {
  color: var(--text-muted);
  font-size: 1rem;
}

/* Pricing comparison */
.pricing-comparison {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.comparison-card {
  padding: 28px 32px;
  flex: 1;
  max-width: 340px;
  min-width: 260px;
  text-align: center;
}

.comparison-card h4 {
  color: var(--text-primary);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.comparison-calc {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 1rem;
  color: var(--text-secondary);
}

.comparison-result {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-top: 8px;
}

.comparison-note {
  margin-top: 12px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.comparison-old .comparison-result {
  text-decoration: line-through;
  opacity: 0.5;
}

.comparison-new {
  border-color: rgba(53,120,198,0.3);
  position: relative;
}

.comparison-badge {
  display: inline-block;
  margin-top: 16px;
  padding: 6px 16px;
  background: rgba(16,185,129,0.15);
  color: var(--color-success);
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 700;
}

.comparison-vs {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text-muted);
}

.pricing-message {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 32px;
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.pricing-cta {
  text-align: center;
}

/* ═══════════════════════════════════════════
   REFERENCES
   ═══════════════════════════════════════════ */
.references-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.ref-card {
  overflow: hidden;
}

.ref-card:hover {
  transform: translateY(-6px);
}

.ref-image {
  overflow: hidden;
}

.ref-placeholder {
  width: 100%;
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition);
}

.ref-card:hover .ref-placeholder {
  transform: scale(1.05);
}

.ref-placeholder-1 {
  background: linear-gradient(135deg, #1a2744 0%, #1B2A4A 40%, #3578C6 100%);
}

.ref-placeholder-2 {
  background: linear-gradient(135deg, #0d2137 0%, #1B3A5A 40%, #5B9BD5 100%);
}

.ref-placeholder-3 {
  background: linear-gradient(135deg, #131e35 0%, #1B2A4A 40%, #2a6cb8 100%);
}

.ref-content {
  padding: 24px;
}

.ref-content h3 {
  color: var(--text-primary);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.ref-content > p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.6;
}

.ref-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

.tag {
  display: inline-block;
  padding: 4px 10px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-primary-light);
  border: 1px solid rgba(53,120,198,0.3);
  border-radius: 20px;
  background: rgba(53,120,198,0.08);
}

.ref-pdf-link {
  display: inline-block;
  margin: 12px 0;
  padding: 8px 18px;
  background: rgba(53,120,198,0.12);
  border: 1px solid rgba(53,120,198,0.3);
  border-radius: 8px;
  color: var(--color-primary-light);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
}

.ref-pdf-link:hover {
  background: rgba(53,120,198,0.25);
  border-color: var(--color-primary);
  color: #fff;
}

.ref-quote {
  border-left: 3px solid var(--color-primary);
  padding-left: 16px;
}

.ref-quote p {
  font-style: italic;
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
  line-height: 1.5;
}

.ref-quote cite {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-style: normal;
}

/* ═══════════════════════════════════════════
   CONTACT
   ═══════════════════════════════════════════ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-honeypot {
  position: absolute;
  left: -9999px;
  opacity: 0;
  height: 0;
  overflow: hidden;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  background: rgba(17,24,39,0.8);
  border: 1px solid rgba(53,120,198,0.2);
  border-radius: 8px;
  color: var(--text-primary);
  font-family: var(--font-main);
  font-size: 1rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(53,120,198,0.15);
}

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

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

/* File Upload */
.file-upload-wrap {
  position: relative;
}

.form-group input[type="file"] {
  width: 100%;
  padding: 12px 16px;
  background: rgba(17,24,39,0.8);
  border: 1px dashed rgba(53,120,198,0.3);
  border-radius: 8px;
  color: var(--text-secondary);
  font-family: var(--font-main);
  font-size: 0.9rem;
  cursor: pointer;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-group input[type="file"]:hover {
  border-color: var(--color-primary);
}

.form-group input[type="file"]:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(53,120,198,0.15);
  outline: none;
}

.form-group input[type="file"]::file-selector-button {
  background: var(--color-primary);
  color: #fff;
  border: none;
  padding: 6px 16px;
  border-radius: 6px;
  font-family: var(--font-main);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  margin-right: 12px;
  transition: background var(--transition);
}

.form-group input[type="file"]::file-selector-button:hover {
  background: var(--color-primary-light);
}

.file-upload-hint {
  display: block;
  margin-top: 6px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.form-group input.error,
.form-group textarea.error {
  border-color: #ef4444;
}

.form-feedback {
  padding: 0;
  border-radius: 8px;
  font-size: 0.9rem;
  transition: all var(--transition);
}

.form-feedback.success {
  padding: 14px 16px;
  background: rgba(16,185,129,0.1);
  border: 1px solid rgba(16,185,129,0.3);
  color: var(--color-success);
}

.form-feedback.error {
  padding: 14px 16px;
  background: rgba(239,68,68,0.1);
  border: 1px solid rgba(239,68,68,0.3);
  color: #ef4444;
}

.info-card {
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.info-card:hover {
  transform: none;
}

.info-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.info-item svg {
  flex-shrink: 0;
  margin-top: 2px;
}

.info-item strong {
  display: block;
  color: var(--text-primary);
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.info-item a,
.info-item p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

.info-item a:hover {
  color: var(--color-primary-light);
}

/* ═══════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════ */
#footer {
  background: var(--bg-card);
  padding: 60px 0 0;
  border-top: 1px solid rgba(53,120,198,0.1);
}

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

.footer-logo {
  height: 36px;
  width: auto;
  margin-bottom: 16px;
}

.footer-tagline {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-primary-light);
  margin-bottom: 8px;
  letter-spacing: 0.02em;
}

.footer-brand p {
  font-size: 0.9rem;
  color: var(--text-muted);
  max-width: 300px;
}

.footer-links h4,
.footer-contact h4 {
  color: var(--text-primary);
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

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

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

.footer-contact p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 8px;
}

.footer-contact a {
  color: var(--text-muted);
}

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

.footer-bottom {
  border-top: 1px solid rgba(53,120,198,0.1);
  padding: 20px 0;
  text-align: center;
}

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

/* ═══════════════════════════════════════════
   ANIMATIONS (Scroll Reveal)
   ═══════════════════════════════════════════ */
[data-aos] {
  opacity: 0;
  transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-aos="fade-up"] {
  transform: translateY(30px);
}

[data-aos="fade-right"] {
  transform: translateX(-30px);
}

[data-aos="fade-left"] {
  transform: translateX(30px);
}

[data-aos="zoom-in"] {
  transform: scale(0.95);
}

[data-aos].aos-animate {
  opacity: 1;
  transform: translateY(0) translateX(0) scale(1);
}

/* ═══════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════ */
@media (max-width: 1199px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 991px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .references-grid {
    grid-template-columns: 1fr;
    max-width: 500px;
    margin: 0 auto;
  }

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

@media (max-width: 767px) {
  :root {
    --section-padding: 70px 0;
    --nav-height: 64px;
  }

  .nav-links {
    display: none;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(13,19,33,0.98);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 40px;
    z-index: 999;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    font-size: 1.2rem;
    padding: 12px 24px;
  }

  .hamburger {
    display: flex;
  }

  .nav-logo img {
    height: 36px;
  }

  .features-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto 60px;
  }

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

  .highlights-row {
    grid-template-columns: 1fr;
    margin-top: 60px;
  }

  .services-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }

  .timeline {
    padding-left: 32px;
  }

  .timeline-dot {
    left: -32px;
    width: 32px;
    height: 32px;
  }

  .timeline-dot span {
    font-size: 0.85rem;
  }

  .timeline-content {
    margin-left: 16px;
    padding: 20px;
  }

  .pricing-comparison {
    flex-direction: column;
  }

  .comparison-card {
    max-width: 100%;
    width: 100%;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .cube-3d {
    width: 160px;
    height: 160px;
  }

  .cube-face {
    width: 160px;
    height: 160px;
  }

  .cube-front  { transform: translateZ(80px); }
  .cube-back   { transform: rotateY(180deg) translateZ(80px); }
  .cube-right  { transform: rotateY(90deg) translateZ(80px); }
  .cube-left   { transform: rotateY(-90deg) translateZ(80px); }
  .cube-top    { transform: rotateX(90deg) translateZ(80px); }
  .cube-bottom { transform: rotateX(-90deg) translateZ(80px); }

  .prototype-callout {
    flex-direction: column;
    text-align: center;
    align-items: center;
  }

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

  .hero-cta .btn {
    width: 100%;
    max-width: 280px;
  }

  .section-subtitle {
    margin-bottom: 40px;
  }
}

@media (max-width: 479px) {
  .counters-row {
    grid-template-columns: 1fr;
  }

  .counter-number {
    font-size: 2.2rem;
  }

  .pricing-main {
    padding: 24px;
  }

  .price-number {
    font-size: 2.2rem;
  }
}