/* ==========================================================================
   LONGWAVE - Modern Software Development Services
   Design System: Sleek Dark Wave Theme
   ========================================================================== */

:root {
  /* Color Palette - Oceanic Deep Dark & Cyan Glow */
  --bg-base: #060913;
  --bg-surface: #0a0f1d;
  --bg-card: rgba(13, 20, 36, 0.7);
  --bg-card-hover: rgba(19, 30, 54, 0.85);
  --bg-elevated: rgba(26, 41, 74, 0.6);
  --bg-glass: rgba(10, 16, 31, 0.75);

  --accent-cyan: #00f2fe;
  --accent-blue: #4facfe;
  --accent-indigo: #6366f1;
  --accent-teal: #14b8a6;
  --accent-emerald: #10b981;
  --accent-gradient: linear-gradient(135deg, #00f2fe 0%, #4facfe 50%, #6366f1 100%);
  --accent-gradient-glow: linear-gradient(135deg, rgba(0, 242, 254, 0.25) 0%, rgba(79, 172, 254, 0.25) 50%, rgba(99, 102, 241, 0.25) 100%);
  --accent-glow: 0 0 35px rgba(0, 242, 254, 0.35);

  --border-dim: rgba(255, 255, 255, 0.07);
  --border-medium: rgba(56, 189, 248, 0.18);
  --border-bright: rgba(0, 242, 254, 0.45);

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-accent: #38bdf8;

  --font-main: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-heading: 'Outfit', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-spring: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);

  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5), 0 0 1px 1px rgba(255, 255, 255, 0.05);
  --shadow-elevated: 0 20px 40px -15px rgba(0, 0, 0, 0.7), 0 0 25px rgba(0, 242, 254, 0.15);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
  color-scheme: dark;
  font-size: 16px;
}

body {
  background-color: var(--bg-base);
  color: var(--text-primary);
  font-family: var(--font-main);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  -webkit-font-smoothing: antialiased;
}

/* Background Animated Canvas & Ambient Glows */
#canvas-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: none;
  opacity: 0.45;
}

.ambient-orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.35;
}

.ambient-orb-1 {
  width: 600px;
  height: 600px;
  top: -150px;
  left: -100px;
  background: radial-gradient(circle, rgba(0, 242, 254, 0.3), rgba(79, 172, 254, 0.05) 70%, transparent);
}

.ambient-orb-2 {
  width: 700px;
  height: 700px;
  top: 40%;
  right: -200px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.25), rgba(14, 165, 233, 0.05) 70%, transparent);
}

.ambient-orb-3 {
  width: 500px;
  height: 500px;
  bottom: 5%;
  left: 15%;
  background: radial-gradient(circle, rgba(0, 242, 254, 0.2), transparent 70%);
}

/* Utility Containers */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

section {
  padding: 100px 0;
  position: relative;
  z-index: 1;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.gradient-text {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 60px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  background: rgba(0, 242, 254, 0.08);
  border: 1px solid var(--border-medium);
  color: var(--accent-cyan);
  margin-bottom: 16px;
  box-shadow: 0 0 20px rgba(0, 242, 254, 0.1);
  text-transform: uppercase;
}

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

@keyframes pulse-dot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.4); opacity: 0.5; }
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.animate-spin {
  animation: spin 1s linear infinite;
}

.section-title {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  margin-bottom: 18px;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Glassmorphism Cards */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all var(--transition-smooth);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.glass-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.15), transparent);
}

.glass-card:hover {
  transform: translateY(-4px);
  background: var(--bg-card-hover);
  border-color: var(--border-medium);
  box-shadow: var(--shadow-elevated);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 26px;
  font-family: var(--font-main);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-smooth);
  border: none;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--accent-gradient);
  color: #030712;
  font-weight: 700;
  box-shadow: 0 4px 20px rgba(0, 242, 254, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 242, 254, 0.55);
  color: #000;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  border: 1px solid var(--border-dim);
  backdrop-filter: blur(10px);
}

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

.btn-icon {
  transition: transform var(--transition-fast);
}

.btn:hover .btn-icon {
  transform: translateX(4px);
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 16px 0;
  transition: background-color var(--transition-smooth), backdrop-filter var(--transition-smooth), border-color var(--transition-smooth), padding var(--transition-smooth);
}

.site-header.scrolled {
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-dim);
  padding: 12px 0;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-primary);
}

.logo-symbol {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, rgba(0, 242, 254, 0.15), rgba(99, 102, 241, 0.2));
  border: 1px solid var(--border-bright);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  box-shadow: 0 0 15px rgba(0, 242, 254, 0.2);
}

.brand-name {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  display: flex;
  align-items: baseline;
}

.brand-name span {
  color: var(--accent-cyan);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color var(--transition-fast);
  position: relative;
}

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

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--accent-gradient);
  border-radius: var(--radius-full);
}

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

.mobile-toggle {
  display: none;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 4px;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
  padding-top: 170px;
  padding-bottom: 110px;
  min-height: 90vh;
  display: flex;
  align-items: center;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 50px;
  align-items: center;
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 36px;
  max-width: 580px;
  line-height: 1.6;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 48px;
}

.hero-proof {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  padding-top: 32px;
  border-top: 1px solid var(--border-dim);
}

.proof-item h4 {
  font-size: 1.75rem;
  color: var(--text-primary);
  font-family: var(--font-heading);
}

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

/* Hero Terminal / Wave Interactive Visual */
.hero-visual {
  position: relative;
}

.terminal-card {
  background: rgba(10, 15, 30, 0.85);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-elevated), 0 0 50px rgba(0, 242, 254, 0.15);
  overflow: hidden;
  backdrop-filter: blur(20px);
}

.terminal-header {
  background: rgba(15, 23, 42, 0.8);
  padding: 12px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-dim);
}

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

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

.dot-red { background: #ef4444; }
.dot-yellow { background: #eab308; }
.dot-green { background: #10b981; }

.terminal-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

.terminal-body {
  padding: 24px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: #cbd5e1;
}

.code-line {
  margin-bottom: 12px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.code-prompt {
  color: var(--accent-cyan);
  user-select: none;
}

.code-keyword { color: #f472b6; }
.code-func { color: #38bdf8; }
.code-string { color: #a7f3d0; }
.code-comment { color: var(--text-muted); font-style: italic; }

.live-metrics-box {
  margin-top: 18px;
  padding: 14px;
  background: rgba(0, 242, 254, 0.04);
  border: 1px dashed var(--border-medium);
  border-radius: var(--radius-sm);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.metric-pill {
  font-size: 0.78rem;
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
  gap: 6px;
}

/* ==========================================================================
   Services Section
   ========================================================================== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
}

.service-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  position: relative;
}

.service-icon-box {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(0, 242, 254, 0.12), rgba(99, 102, 241, 0.12));
  border: 1px solid var(--border-medium);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  margin-bottom: 24px;
  box-shadow: 0 4px 15px rgba(0, 242, 254, 0.1);
  transition: transform var(--transition-smooth), border-color var(--transition-smooth);
}

.service-card:hover .service-icon-box {
  transform: scale(1.08) rotate(3deg);
  border-color: var(--accent-cyan);
  box-shadow: 0 0 25px rgba(0, 242, 254, 0.3);
}

.service-title {
  font-size: 1.35rem;
  margin-bottom: 12px;
}

.service-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 24px;
  flex-grow: 1;
}

.service-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--border-dim);
}

.tech-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-dim);
  color: #cbd5e1;
}

.service-action {
  font-size: 0.9rem;
  color: var(--accent-cyan);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
  font-weight: 600;
  transition: gap var(--transition-fast);
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
}

.service-action:hover {
  gap: 10px;
  color: #fff;
}

/* ==========================================================================
   Process Section
   ========================================================================== */
.process-timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}

.process-timeline::before {
  content: '';
  position: absolute;
  top: 45px;
  left: 60px;
  right: 60px;
  height: 2px;
  background: linear-gradient(90deg, rgba(0, 242, 254, 0.1), rgba(0, 242, 254, 0.6), rgba(99, 102, 241, 0.6), rgba(99, 102, 241, 0.1));
  z-index: 0;
}

.process-step {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
}

.step-num-box {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--bg-surface);
  border: 2px solid var(--accent-cyan);
  box-shadow: 0 0 20px rgba(0, 242, 254, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 24px;
  transition: transform var(--transition-smooth), background var(--transition-smooth);
}

.process-step:hover .step-num-box {
  transform: scale(1.15);
  background: var(--accent-gradient);
  color: #000;
}

.step-card {
  padding: 24px;
  flex-grow: 1;
}

.step-title {
  font-size: 1.15rem;
  margin-bottom: 10px;
}

.step-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
}

.step-deliverable {
  font-size: 0.78rem;
  color: var(--accent-cyan);
  font-family: var(--font-mono);
  background: rgba(0, 242, 254, 0.05);
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(0, 242, 254, 0.15);
}

/* ==========================================================================
   Interactive Project Cost & Scope Estimator
   ========================================================================== */
.estimator-layout {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 36px;
  align-items: start;
}

.estimator-form {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.estimator-group-title {
  font-size: 1.05rem;
  margin-bottom: 14px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.estimator-group-title span.tag {
  font-size: 0.72rem;
  background: rgba(0, 242, 254, 0.1);
  color: var(--accent-cyan);
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

.option-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
}

.option-card {
  padding: 16px 14px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
  user-select: none;
}

.option-card:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--border-medium);
}

.option-card.selected {
  background: rgba(0, 242, 254, 0.12);
  border-color: var(--accent-cyan);
  box-shadow: 0 0 15px rgba(0, 242, 254, 0.2);
}

.option-card .option-icon {
  font-size: 1.5rem;
  margin-bottom: 8px;
  display: block;
}

.option-card .option-name {
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--text-primary);
}

.option-card .option-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* Multi-select features list */
.feature-checkbox-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
}

.feature-pill {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.feature-pill:hover {
  border-color: var(--border-medium);
}

.feature-pill.checked {
  background: rgba(99, 102, 241, 0.12);
  border-color: var(--accent-indigo);
}

.feature-pill input[type="checkbox"] {
  accent-color: var(--accent-cyan);
  width: 16px;
  height: 16px;
  cursor: pointer;
}

.feature-label {
  font-size: 0.88rem;
  font-weight: 500;
  color: #cbd5e1;
}

/* Estimator Live Output Sticky Card */
.estimator-summary-card {
  position: sticky;
  top: 100px;
  border: 1px solid var(--border-bright);
  background: linear-gradient(180deg, rgba(16, 26, 49, 0.9) 0%, rgba(10, 16, 31, 0.95) 100%);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.6), 0 0 35px rgba(0, 242, 254, 0.15);
}

.summary-header {
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-dim);
  margin-bottom: 24px;
}

.summary-badge {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent-cyan);
  font-family: var(--font-mono);
  margin-bottom: 8px;
}

.price-range {
  font-size: 2.2rem;
  font-family: var(--font-heading);
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.1;
  margin-bottom: 6px;
}

.timeline-info {
  font-size: 0.9rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.summary-breakdown {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 24px;
}

.breakdown-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.breakdown-row span:last-child {
  color: var(--text-primary);
  font-weight: 600;
}

.summary-note {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-top: 18px;
  text-align: center;
}

/* ==========================================================================
   Engineering Standards / Why Us
   ========================================================================== */
.standards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.standard-item {
  padding: 30px;
}

.standard-num {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent-cyan);
  margin-bottom: 12px;
}

.standard-title {
  font-size: 1.25rem;
  margin-bottom: 10px;
}

.standard-desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
}

/* ==========================================================================
   Contact & Inquiry Section
   ========================================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 48px;
}

.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 32px;
}

.contact-channel-card {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.contact-channel-card:hover {
  border-color: var(--border-medium);
  background: var(--bg-card-hover);
}

.channel-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: rgba(0, 242, 254, 0.1);
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.channel-info h4 {
  font-size: 1rem;
  margin-bottom: 4px;
}

.channel-info p, .channel-info a {
  font-size: 0.88rem;
  color: var(--text-secondary);
  text-decoration: none;
}

.channel-info a:hover {
  color: var(--accent-cyan);
}

/* Form Styles */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

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

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-label {
  font-size: 0.88rem;
  font-weight: 600;
  color: #cbd5e1;
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-main);
  font-size: 0.95rem;
  transition: all var(--transition-fast);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--accent-cyan);
  background: rgba(0, 242, 254, 0.04);
  box-shadow: 0 0 16px rgba(0, 242, 254, 0.2);
}

.form-input.is-invalid, .form-textarea.is-invalid {
  border-color: #ef4444;
}

.error-message {
  font-size: 0.78rem;
  color: #f87171;
  display: none;
}

.form-group.has-error .error-message {
  display: block;
}

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

.inquiry-attached-banner {
  display: none;
  background: rgba(0, 242, 254, 0.08);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 0.84rem;
  color: var(--accent-cyan);
  align-items: center;
  justify-content: space-between;
}

/* Success Modal / Toast */
.form-success-banner {
  display: none;
  padding: 30px;
  text-align: center;
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: var(--radius-md);
}

.form-success-banner.active {
  display: block;
}

.success-icon-badge {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: rgba(16, 185, 129, 0.2);
  color: #34d399;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin: 0 auto 16px;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  border-top: 1px solid var(--border-dim);
  padding: 60px 0 30px;
  background: rgba(4, 7, 15, 0.9);
  position: relative;
  z-index: 1;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 50px;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-top: 12px;
  max-width: 320px;
}

.footer-col h4 {
  font-size: 0.95rem;
  margin-bottom: 18px;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

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

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.88rem;
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 24px;
  border-top: 1px solid var(--border-dim);
  font-size: 0.85rem;
  color: var(--text-muted);
}

.system-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #34d399;
  font-size: 0.82rem;
  font-family: var(--font-mono);
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #34d399;
  box-shadow: 0 0 8px #34d399;
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .process-timeline {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .process-timeline::before {
    display: none;
  }

  .estimator-layout {
    grid-template-columns: 1fr;
  }
  
  .estimator-summary-card {
    position: static;
  }

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

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

@media (max-width: 768px) {
  section {
    padding: 70px 0;
  }

  .mobile-toggle {
    display: block;
  }

  .nav-links {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--bg-surface);
    flex-direction: column;
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid var(--border-dim);
    display: none;
  }

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

  .nav-actions .btn {
    display: none;
  }

  .hero-proof {
    grid-template-columns: 1fr;
    gap: 16px;
  }

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

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

  .process-timeline {
    grid-template-columns: 1fr;
  }

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

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

  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
}