/* ==========================================================================
   AXIONOVUS ENTERPRISE IT - MODERN DESIGN SYSTEM & STYLESHEET
   Supports Seamless Light (Default) and Dark Theming
   ========================================================================== */

/* --- Default Light Theme Variables (:root & [data-theme="light"]) --- */
:root,
[data-theme="light"] {
  /* Brand Palette (Aligned with Axionovus 3D Logo) */
  --brand-cyan: #0284C7;           /* Vibrant Sky 600 - High contrast & crisp */
  --brand-cyan-dim: rgba(2, 132, 199, 0.1);
  --brand-blue: #2563EB;           /* Royal Blue */
  --brand-deep-blue: #1D4ED8;
  --brand-silver: #475569;
  --brand-silver-dim: #64748B;
  --brand-indigo: #4F46E5;
  --brand-purple: #7C3AED;
  
  /* Backgrounds & Surfaces */
  --bg-darkest: #F8FAFC;           /* Clean modern slate 50 */
  --bg-dark: #FFFFFF;              /* Pure white card surface */
  --bg-card: rgba(255, 255, 255, 0.88);
  --bg-card-hover: rgba(255, 255, 255, 0.98);
  --bg-glass: rgba(255, 255, 255, 0.9);
  --bg-surface: #F1F5F9;           /* Slate 100 */
  --bg-input: #FFFFFF;

  /* Borders & Glows */
  --border-subtle: rgba(15, 23, 42, 0.1);
  --border-hover: rgba(2, 132, 199, 0.45);
  --border-active: rgba(2, 132, 199, 0.7);
  --glow-cyan: 0 8px 24px rgba(2, 132, 199, 0.18);
  --glow-blue: 0 10px 28px rgba(37, 99, 235, 0.14);
  --glow-subtle: 0 10px 30px -5px rgba(15, 23, 42, 0.06), 0 4px 6px -2px rgba(15, 23, 42, 0.03);

  /* Typography */
  --text-primary: #0F172A;          /* Slate 900 */
  --text-secondary: #475569;        /* Slate 600 */
  --text-muted: #64748B;            /* Slate 500 */
  --text-accent: #0284C7;
  --text-brand-axio: #0F172A;

  /* Ambient */
  --ambient-grid: rgba(15, 23, 42, 0.035);
  --glow-orb-1: rgba(2, 132, 199, 0.08);
  --glow-orb-2: rgba(99, 102, 241, 0.07);
  --glow-orb-3: rgba(37, 99, 235, 0.06);

  /* Gradients */
  --heading-gradient: linear-gradient(135deg, #0F172A 20%, #0284C7 85%);
  --btn-primary-bg: linear-gradient(135deg, #0284C7 0%, #2563EB 100%);
  --btn-primary-text: #FFFFFF;
}

/* --- Dark Theme Variables ([data-theme="dark"]) --- */
[data-theme="dark"] {
  /* Brand Palette (Aligned with Axionovus 3D Logo) */
  --brand-cyan: #00D2FF;
  --brand-cyan-dim: rgba(0, 210, 255, 0.12);
  --brand-blue: #0A84FF;
  --brand-deep-blue: #0052CC;
  --brand-silver: #E2E8F0;
  --brand-silver-dim: #94A3B8;
  --brand-indigo: #6366F1;
  --brand-purple: #8B5CF6;
  
  /* Backgrounds & Surfaces */
  --bg-darkest: #050811;
  --bg-dark: #090E1A;
  --bg-card: rgba(15, 23, 42, 0.7);
  --bg-card-hover: rgba(20, 32, 58, 0.85);
  --bg-glass: rgba(11, 18, 33, 0.82);
  --bg-surface: #0E1626;
  --bg-input: rgba(15, 23, 42, 0.85);

  /* Borders & Glows */
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(0, 210, 255, 0.4);
  --border-active: rgba(0, 210, 255, 0.7);
  --glow-cyan: 0 0 25px rgba(0, 210, 255, 0.35);
  --glow-blue: 0 0 35px rgba(10, 132, 255, 0.3);
  --glow-subtle: 0 4px 20px rgba(0, 0, 0, 0.4);

  /* Typography */
  --text-primary: #F8FAFC;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  --text-accent: #38BDF8;
  --text-brand-axio: #FFFFFF;

  /* Ambient */
  --ambient-grid: rgba(255, 255, 255, 0.02);
  --glow-orb-1: rgba(0, 210, 255, 0.15);
  --glow-orb-2: rgba(99, 102, 241, 0.15);
  --glow-orb-3: rgba(10, 132, 255, 0.05);

  /* Gradients */
  --heading-gradient: linear-gradient(135deg, #FFFFFF 20%, #00D2FF 85%);
  --btn-primary-bg: linear-gradient(135deg, #00D2FF 0%, #0A84FF 100%);
  --btn-primary-text: #060913;
}

/* --- Shared Constants --- */
:root {
  --font-primary: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-display: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;
  --max-width: 1240px;
}

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

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

body {
  font-family: var(--font-primary);
  background-color: var(--bg-darkest);
  color: var(--text-primary);
  line-height: 1.65;
  overflow-x: hidden;
  position: relative;
  transition: background-color var(--transition-normal), color var(--transition-normal);
  background-image: 
    radial-gradient(circle at 15% 15%, var(--glow-orb-1) 0%, transparent 40%),
    radial-gradient(circle at 85% 30%, var(--glow-orb-2) 0%, transparent 45%),
    radial-gradient(circle at 50% 80%, var(--glow-orb-3) 0%, transparent 50%);
  background-attachment: fixed;
}

/* Subtle Animated Ambient Grid */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-size: 60px 60px;
  background-image: 
    linear-gradient(to right, var(--ambient-grid) 1px, transparent 1px),
    linear-gradient(to bottom, var(--ambient-grid) 1px, transparent 1px);
  pointer-events: none;
  z-index: 0;
  transition: background-image var(--transition-normal);
}

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

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

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  border: none;
  outline: none;
  background: none;
}

ul {
  list-style: none;
}

/* --- Utility Classes --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
  position: relative;
  z-index: 1;
}

.section-padding {
  padding-top: 6.5rem;
  padding-bottom: 6.5rem;
  position: relative;
}

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

.text-cyan {
  color: var(--brand-cyan);
}

.section-header {
  text-align: center;
  max-width: 780px;
  margin: 0 auto 4rem auto;
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 1rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--brand-cyan);
  background: var(--brand-cyan-dim);
  border: 1px solid var(--border-hover);
  border-radius: var(--radius-full);
  margin-bottom: 1.25rem;
  backdrop-filter: blur(8px);
}

.section-badge .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand-cyan);
  box-shadow: 0 0 8px var(--brand-cyan);
  animation: pulse 2s infinite ease-in-out;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.8vw, 3rem);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
  color: var(--text-primary);
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: clamp(1rem, 1.2vw, 1.15rem);
  line-height: 1.7;
}

/* Glassmorphism Card Basis */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--glow-subtle);
  transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal), background-color var(--transition-normal);
}

.glass-card:hover {
  border-color: var(--border-hover);
  box-shadow: 0 14px 35px -8px rgba(15, 23, 42, 0.12), var(--glow-cyan);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.625rem;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-normal);
  white-space: nowrap;
}

.btn-primary {
  background: var(--btn-primary-bg);
  color: var(--btn-primary-text);
  font-weight: 700;
  box-shadow: 0 4px 20px rgba(2, 132, 199, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(2, 132, 199, 0.5);
  filter: brightness(1.06);
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--brand-cyan);
  color: var(--brand-cyan);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 0.6rem 1.25rem;
  font-size: 0.875rem;
}

/* --- Theme Switcher Button --- */
.theme-toggle-btn {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-normal);
  box-shadow: var(--glow-subtle);
}

.theme-toggle-btn:hover {
  border-color: var(--brand-cyan);
  color: var(--brand-cyan);
  transform: rotate(15deg) scale(1.06);
  box-shadow: var(--glow-cyan);
}

/* Toggle icon display based on active theme */
:root .theme-icon-light,
[data-theme="light"] .theme-icon-light {
  display: none;
}
:root .theme-icon-dark,
[data-theme="light"] .theme-icon-dark {
  display: flex;
}

[data-theme="dark"] .theme-icon-dark {
  display: none;
}
[data-theme="dark"] .theme-icon-light {
  display: flex;
}

/* --- Navigation Bar --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  padding: 1.1rem 0;
  transition: background-color var(--transition-normal), backdrop-filter var(--transition-normal), padding var(--transition-normal), border-color var(--transition-normal);
  border-bottom: 1px solid transparent;
}

.header.scrolled {
  background-color: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 0.75rem 0;
  border-bottom-color: var(--border-subtle);
  box-shadow: var(--glow-subtle);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  cursor: pointer;
}

.brand-logo img {
  height: 44px;
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 0 10px rgba(2, 132, 199, 0.25));
  transition: transform var(--transition-normal);
}

.brand-logo:hover img {
  transform: scale(1.05);
}

.brand-text-container {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
  line-height: 1;
}

.brand-title .axio {
  color: var(--text-brand-axio);
  transition: color var(--transition-normal);
}

.brand-title .novus {
  color: var(--brand-cyan);
  text-shadow: 0 0 12px rgba(2, 132, 199, 0.35);
  transition: color var(--transition-normal);
}

.brand-subtitle {
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--text-muted);
  font-weight: 600;
  margin-top: 3px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 0.35rem 0;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--brand-cyan), var(--brand-blue));
  border-radius: var(--radius-full);
  transition: width var(--transition-normal);
}

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

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  cursor: pointer;
  padding: 0.5rem;
  z-index: 110;
}

.mobile-toggle span {
  width: 24px;
  height: 2px;
  background-color: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

.mobile-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.mobile-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* --- Hero Section --- */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 8.5rem;
  padding-bottom: 5rem;
  position: relative;
  overflow: hidden;
}

.hero-glow-1 {
  position: absolute;
  top: 15%;
  left: 5%;
  width: 480px;
  height: 480px;
  background: radial-gradient(circle, var(--glow-orb-1) 0%, transparent 70%);
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
}

.hero-glow-2 {
  position: absolute;
  top: 25%;
  right: 5%;
  width: 550px;
  height: 550px;
  background: radial-gradient(circle, var(--glow-orb-2) 0%, transparent 70%);
  filter: blur(90px);
  pointer-events: none;
  z-index: 0;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3.5rem;
  align-items: center;
}

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

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.95rem;
  background: var(--brand-cyan-dim);
  border: 1px solid var(--border-hover);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--brand-cyan);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1.5rem;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 4.5vw, 4rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
}

.hero-description {
  font-size: clamp(1.05rem, 1.25vw, 1.2rem);
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 2.25rem;
  max-width: 620px;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.25rem;
  margin-bottom: 3.5rem;
}

.hero-metrics-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-subtle);
}

.metric-item {
  display: flex;
  flex-direction: column;
}

.metric-val {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.1;
  display: flex;
  align-items: center;
}

.metric-val span {
  color: var(--brand-cyan);
}

.metric-label {
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
  font-weight: 500;
}

/* Hero Visual & 3D Interactive Card */
.hero-visual-wrapper {
  position: relative;
  z-index: 2;
}

.hero-visual-card {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  background: var(--bg-card);
  box-shadow: 0 20px 50px -10px rgba(15, 23, 42, 0.15), var(--glow-cyan);
}

.hero-visual-card img {
  width: 100%;
  height: 440px;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.hero-visual-card:hover img {
  transform: scale(1.03);
}

.hero-visual-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(15, 23, 42, 0.85) 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 2rem;
}

.live-telemetry {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-glass);
  border: 1px solid var(--border-hover);
  border-radius: var(--radius-md);
  padding: 0.85rem 1.25rem;
  backdrop-filter: blur(12px);
  color: var(--text-primary);
}

.telemetry-node {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.status-pulse {
  width: 8px;
  height: 8px;
  background: #10B981;
  border-radius: 50%;
  box-shadow: 0 0 10px #10B981;
  animation: pulse 1.8s infinite;
}

.telemetry-text {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-primary);
}

.telemetry-data {
  font-family: monospace;
  font-size: 0.78rem;
  color: var(--brand-cyan);
}

/* Floating Badges */
.floating-badge {
  position: absolute;
  padding: 0.75rem 1.15rem;
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  box-shadow: var(--glow-subtle);
  animation: float 5s ease-in-out infinite;
  z-index: 3;
}

.floating-badge.badge-top {
  top: -20px;
  right: -20px;
  border-color: var(--border-hover);
}

.floating-badge.badge-bottom {
  bottom: -20px;
  left: -20px;
  border-color: rgba(99, 102, 241, 0.35);
  animation-delay: -2.5s;
}

.badge-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--brand-cyan-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--brand-cyan);
}

.badge-info {
  display: flex;
  flex-direction: column;
}

.badge-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-primary);
}

.badge-subtitle {
  font-size: 0.72rem;
  color: var(--text-secondary);
}

/* --- Solutions / Services Section --- */
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.solution-card {
  padding: 2.25rem;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.solution-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--brand-cyan), transparent);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

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

.solution-icon-wrap {
  width: 58px;
  height: 58px;
  border-radius: var(--radius-md);
  background: var(--brand-cyan-dim);
  border: 1px solid var(--border-hover);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  color: var(--brand-cyan);
  transition: transform var(--transition-normal), background var(--transition-normal);
}

.solution-card:hover .solution-icon-wrap {
  transform: scale(1.08) rotate(4deg);
}

.solution-title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 0.85rem;
  color: var(--text-primary);
}

.solution-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.65;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.solution-features {
  border-top: 1px solid var(--border-subtle);
  padding-top: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-bottom: 1.5rem;
}

.solution-feature-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.solution-feature-item svg {
  color: var(--brand-cyan);
  flex-shrink: 0;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--brand-cyan);
  cursor: pointer;
  transition: gap var(--transition-fast);
}

.card-link:hover {
  gap: 0.7rem;
}

/* --- Enterprise Architecture Highlight Section --- */
.architecture-section {
  background: linear-gradient(180deg, var(--bg-darkest) 0%, var(--bg-surface) 50%, var(--bg-darkest) 100%);
  transition: background var(--transition-normal);
}

.architecture-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 4rem;
  align-items: center;
}

.arch-visual-container {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  box-shadow: 0 20px 50px rgba(15, 23, 42, 0.15);
}

.arch-visual-container img {
  width: 100%;
  height: 480px;
  object-fit: cover;
}

.arch-pills-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.arch-pill {
  padding: 1.35rem;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  display: flex;
  gap: 1.25rem;
  transition: all var(--transition-normal);
  box-shadow: var(--glow-subtle);
}

.arch-pill:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateX(6px);
}

.arch-pill-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--brand-cyan-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--brand-cyan);
  flex-shrink: 0;
}

.arch-pill-content h4 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.35rem;
  color: var(--text-primary);
}

.arch-pill-content p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

/* --- Technology Ecosystem Tabs & Filter --- */
.tech-tabs {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 3rem;
}

.tech-tab-btn {
  padding: 0.65rem 1.4rem;
  border-radius: var(--radius-full);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.tech-tab-btn:hover {
  color: var(--text-primary);
  border-color: var(--border-hover);
}

.tech-tab-btn.active {
  background: var(--brand-cyan-dim);
  border-color: var(--brand-cyan);
  color: var(--brand-cyan);
  box-shadow: var(--glow-cyan);
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 1.25rem;
}

.tech-item-card {
  padding: 1.4rem 1rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--glow-subtle);
  transition: all var(--transition-normal);
}

.tech-item-card:hover {
  transform: translateY(-4px);
  border-color: var(--brand-cyan);
  background: var(--bg-card-hover);
  box-shadow: var(--glow-cyan);
}

.tech-item-icon {
  font-size: 1.75rem;
  margin-bottom: 0.6rem;
  color: var(--brand-cyan);
}

.tech-item-name {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text-primary);
}

.tech-item-role {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 0.2rem;
}

/* --- Engineering Methodology Roadmap --- */
.methodology-timeline {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1.5rem;
  position: relative;
  margin-top: 2rem;
}

.methodology-timeline::before {
  content: "";
  position: absolute;
  top: 42px;
  left: 5%;
  width: 90%;
  height: 2px;
  background: linear-gradient(90deg, var(--brand-cyan), var(--brand-indigo), var(--brand-blue));
  z-index: 0;
  opacity: 0.4;
}

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

.step-number {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--bg-dark);
  border: 2px solid var(--brand-cyan);
  color: var(--brand-cyan);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  box-shadow: var(--glow-cyan);
}

.step-card {
  padding: 1.5rem;
  height: 100%;
}

.step-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.65rem;
  color: var(--text-primary);
}

.step-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

/* --- Industry Verticals --- */
.industries-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.industry-card {
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  text-align: left;
}

.industry-icon {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-md);
  background: var(--brand-cyan-dim);
  border: 1px solid var(--border-hover);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--brand-cyan);
  margin-bottom: 1.25rem;
}

.industry-title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

.industry-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* --- Interactive Project Scope & Estimator --- */
.estimator-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 3rem;
  box-shadow: 0 20px 50px -10px rgba(15, 23, 42, 0.12), var(--glow-cyan);
}

.estimator-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3.5rem;
}

.estimator-options {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.option-group-title {
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--brand-cyan);
  margin-bottom: 1rem;
}

.option-buttons-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 0.85rem;
}

.option-btn {
  padding: 0.85rem 1rem;
  background: var(--bg-dark);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  text-align: center;
  transition: all var(--transition-fast);
}

.option-btn:hover {
  color: var(--text-primary);
  border-color: var(--border-hover);
}

.option-btn.selected {
  background: var(--brand-cyan-dim);
  border-color: var(--brand-cyan);
  color: var(--brand-cyan);
  font-weight: 700;
  box-shadow: var(--glow-cyan);
}

.estimator-summary-box {
  background: var(--bg-dark);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--glow-subtle);
}

.summary-heading {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
}

.summary-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.92rem;
}

.summary-label {
  color: var(--text-secondary);
}

.summary-value {
  font-weight: 700;
  color: var(--brand-cyan);
}

.estimator-action {
  margin-top: 2rem;
}

/* --- Core Engineering Pillars / Trust (No Fake Ratings!) --- */
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.pillar-card {
  padding: 2.25rem 1.75rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.pillar-icon-box {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--brand-cyan-dim);
  border: 1px solid var(--border-hover);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--brand-cyan);
  margin-bottom: 1.5rem;
}

.pillar-title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.pillar-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* --- Contact & Briefing Section --- */
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 3.5rem;
}

.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-top: 2rem;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  padding: 1.25rem;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--glow-subtle);
}

.contact-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--brand-cyan-dim);
  color: var(--brand-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-detail h5 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.contact-detail p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.contact-form-card {
  padding: 2.75rem;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.85rem 1.15rem;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.95rem;
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--brand-cyan);
  box-shadow: var(--glow-cyan);
}

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

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

/* --- Footer (Deep Executive Tech Dark Grounding) --- */
.footer {
  background: #090E1A;
  color: #F8FAFC;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 5rem 0 2rem 0;
  position: relative;
  z-index: 10;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 3rem;
  margin-bottom: 4rem;
}

.footer .brand-title .axio {
  color: #FFFFFF;
}

.footer-brand-desc {
  color: #94A3B8;
  font-size: 0.92rem;
  line-height: 1.65;
  margin-top: 1.25rem;
  max-width: 320px;
}

.footer-col h4 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 1.5rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links a {
  font-size: 0.88rem;
  color: #94A3B8;
  transition: color var(--transition-fast), transform var(--transition-fast);
  display: inline-block;
}

.footer-links a:hover {
  color: var(--brand-cyan);
  transform: translateX(4px);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  color: #64748B;
}

.social-links {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.social-btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #94A3B8;
  transition: all var(--transition-fast);
}

.social-btn:hover {
  background: var(--brand-cyan);
  border-color: var(--brand-cyan);
  color: #050811;
  transform: translateY(-2px);
}

/* Floating Back To Top Button */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--bg-glass);
  border: 1px solid var(--border-hover);
  color: var(--brand-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: all var(--transition-normal);
  z-index: 90;
  backdrop-filter: blur(12px);
  box-shadow: var(--glow-subtle);
}

.back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
}

.back-to-top:hover {
  transform: translateY(-4px);
  background: var(--brand-cyan);
  color: #FFFFFF;
  box-shadow: var(--glow-cyan);
}

/* Notification Toast / Modal */
.toast-notice {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--bg-dark);
  border: 1px solid var(--brand-cyan);
  color: var(--text-primary);
  padding: 1rem 1.75rem;
  border-radius: var(--radius-full);
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.15), var(--glow-cyan);
  backdrop-filter: blur(16px);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 600;
  font-size: 0.92rem;
  opacity: 0;
  pointer-events: none;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 1000;
}

.toast-notice.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
  pointer-events: auto;
}

/* --- Keyframe Animations --- */
@keyframes pulse {
  0%, 100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.3);
    opacity: 0.6;
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

/* --- Responsive Breakpoints --- */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 4rem;
  }

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

  .hero-cta-group {
    justify-content: center;
  }

  .hero-metrics-strip {
    justify-content: center;
    width: 100%;
    max-width: 600px;
  }

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

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

  .methodology-timeline {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .methodology-timeline::before {
    display: none;
  }

  .step-number {
    margin-bottom: 0.75rem;
  }

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

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

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

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

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

@media (max-width: 768px) {
  .section-padding {
    padding-top: 4.5rem;
    padding-bottom: 4.5rem;
  }

  .mobile-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 360px;
    height: 100vh;
    background: var(--bg-glass);
    backdrop-filter: blur(24px);
    border-left: 1px solid var(--border-subtle);
    flex-direction: column;
    align-items: flex-start;
    padding: 6rem 2.5rem;
    gap: 1.5rem;
    transition: right var(--transition-normal);
    z-index: 105;
  }

  .nav-links.open {
    right: 0;
  }

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

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

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

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

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

  .hero-metrics-strip {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 1.25rem;
    text-align: center;
  }
}