/* ==========================================================================
   Design System: Sysvio Tech Light Theme Palette
   ========================================================================== */
:root {
  /* Brand Canvas & Neutrals (From Brand Palette) */
  --bg-canvas: #F4F5F7;               /* Background */
  --bg-surface: #FFFFFF;              /* Surface */
  --bg-elevated: #FFFFFF;             /* Elevated block background */
  --bg-card: #FFFFFF;                 /* Solid card surface */
  --bg-card-hover: #F9FAFB;           /* Slight off-white hover */

  /* Brand Colors from Style Guide */
  --sysvio-blue: #37ADE9;             /* Primary Brand Color */
  --sysvio-gray: #767072;             /* Secondary Brand Color */
  
  /* Blue Scale Tints & Shades */
  --blue-tint-90: #E7F5FD;            /* Tint 90 */
  --blue-tint-60: #A9DDF6;            /* Tint 60 */
  --blue-shade-30: #1E85BC;           /* Shade 30 */
  --blue-shade-60: #125E88;           /* Shade 60 */

  /* Text & Labels (From Brand Palette) */
  --text-primary: #14161C;            /* Ink / dark bg */
  --text-secondary: #5a6270;          /* Darker gray for readability */
  --text-muted: #8A91A0;              /* Muted text */

  /* Semantic Feedback */
  --semantic-success: #2FBF71;        /* Success green */

  /* Borders (From Brand Palette) */
  --border-subtle: #E7E9EE;           /* Border */
  --border-medium: #A9DDF6;           /* Tint 60 for highlights */
  --border-highlight: #37ADE9;        /* Sysvio Blue */

  /* Gradients */
  --gradient-brand: linear-gradient(135deg, #125E88 0%, var(--sysvio-blue) 70%, var(--blue-tint-60) 100%);
  --gradient-btn: linear-gradient(135deg, var(--sysvio-blue) 0%, var(--blue-shade-30) 100%);
  --gradient-btn-hover: linear-gradient(135deg, var(--blue-shade-30) 0%, var(--sysvio-blue) 100%);
  --gradient-card-top: linear-gradient(90deg, var(--sysvio-blue) 0%, var(--sysvio-gray) 100%);

  --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --ease-smooth: cubic-bezier(0.16, 1, 0.3, 1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

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

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

.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* ==========================================================================
   2. Dark Theme (Nighttime Overrides: 7 PM - 7 AM)
   ========================================================================== */
[data-theme="dark"] {
  --bg-canvas: #14161C;
  --bg-surface: #1a1e27;
  --bg-elevated: #222733;
  --bg-card: rgba(26, 30, 39, 0.75);
  --bg-card-hover: rgba(34, 39, 51, 0.95);

  --text-primary: #FFFFFF;
  --text-secondary: #d1d5db;
  --text-muted: #8A91A0;

  --border-subtle: rgba(231, 233, 238, 0.12);
  --border-medium: rgba(55, 173, 233, 0.28);
  --border-highlight: rgba(55, 173, 233, 0.55);

  --gradient-brand: linear-gradient(135deg, #FFFFFF 15%, var(--sysvio-blue) 70%, var(--blue-tint-60) 100%);
}

[data-theme="dark"] header {
  background: rgba(20, 22, 28, 0.88);
}

/* Dark theme adjustments for Sector Specializations */
[data-theme="dark"] .bg-elevated {
  background-color: var(--bg-canvas);
}

[data-theme="dark"] .practice-box {
  background: var(--bg-card);
  border-top-color: var(--border-subtle);
  border-right-color: var(--border-subtle);
  border-bottom-color: var(--border-subtle);
  border-left-color: var(--sysvio-gray);
}

[data-theme="dark"] .practice-box:hover {
  border-left-color: var(--sysvio-blue);
  background: rgba(55, 173, 233, 0.12);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}
}

[data-theme="dark"] .cta-box {
  background: var(--bg-card);
  border-color: var(--border-subtle);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
}

/* ==========================================================================
   3. Reset & Base Layout (Leave everything below this unchanged)
   ========================================================================== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* ==========================================================================
   Ambient Radiant Background (Lightened for White Canvas)
   ========================================================================== */
.ambient-glow {
  position: absolute;
  pointer-events: none;
  filter: blur(130px);
  opacity: 0.4;
  z-index: 0;
}

.glow-primary {
  top: -100px;
  left: 20%;
  width: 650px;
  height: 550px;
  background: radial-gradient(circle, var(--blue-tint-60) 0%, rgba(244, 245, 247, 0) 70%);
}

.glow-shade {
  top: 180px;
  right: 12%;
  width: 700px;
  height: 600px;
  background: radial-gradient(circle, var(--blue-tint-90) 0%, rgba(244, 245, 247, 0) 70%);
}

/* Typography Utility */
.gradient-text {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border-subtle);
  z-index: 100;
}

.nav-container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 2rem;
  height: 5.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-link {
  display: flex;
  align-items: center;
}

.brand-logo {
  height: 38px;
  width: auto;
  display: block;
}

.nav-links {
  display: flex;
  gap: 2.25rem;
}

.nav-links a {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: color 0.2s var(--ease-smooth);
}

.nav-links a:hover {
  color: var(--sysvio-blue);
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.6rem;
  font-size: 0.875rem;
  font-weight: 700;
  border-radius: 6px;
  transition: all 0.25s var(--ease-smooth);
  cursor: pointer;
}

.btn-nav {
  padding: 0.55rem 1.25rem;
  font-size: 0.8rem;
  background: var(--blue-tint-90);
  border: 1px solid var(--border-medium);
  color: var(--sysvio-blue);
}

.btn-nav:hover {
  background: var(--sysvio-blue);
  border-color: var(--sysvio-blue);
  color: #ffffff;
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--gradient-btn);
  color: #ffffff;
  border: none;
}

.btn-primary:hover {
  background: var(--gradient-btn-hover);
  transform: translateY(-2px);
}

.btn-glow {
  box-shadow: 0 4px 16px rgba(55, 173, 233, 0.3);
}

.btn-glow:hover {
  box-shadow: 0 6px 20px rgba(55, 173, 233, 0.45);
}

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

.btn-secondary:hover {
  background: rgba(55, 173, 233, 0.08);
  border-color: var(--sysvio-blue);
  color: var(--text-primary);
  transform: translateY(-1px);
}

.btn-large {
  padding: 1rem 2.25rem;
  font-size: 0.95rem;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
  position: relative;
  padding: 8rem 0 6rem;
  z-index: 1;
}

.hero-content {
  max-width: 920px;
}

.pill-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.4rem 1.1rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--sysvio-blue);
  margin-bottom: 2.25rem;
  box-shadow: 0 4px 12px rgba(55, 173, 233, 0.08);
}

.status-dot {
  width: 8px;
  height: 8px;
  background-color: var(--semantic-success);
  border-radius: 50%;
  box-shadow: 0 0 10px rgba(47, 191, 113, 0.4);
}

.hero h1 {
  font-size: clamp(2.75rem, 5vw, 4.5rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: 2rem;
}

.hero-description {
  font-size: 1.25rem;
  line-height: 1.65;
  color: var(--text-secondary);
  max-width: 740px;
  margin-bottom: 3rem;
}

.hero-actions {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
}

/* ==========================================================================
   Ledger Band (Proof Numbers)
   ========================================================================== */
.ledger-band {
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-surface);
}

.ledger-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.ledger-item {
  padding: 2.75rem 1.75rem;
  border-right: 1px solid var(--border-subtle);
}

.ledger-item:last-child {
  border-right: none;
}

.ledger-value {
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 0.6rem;
  letter-spacing: -0.02em;
  color: var(--sysvio-blue);
}

.ledger-label {
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  margin-bottom: 0.35rem;
}

.ledger-detail {
  font-size: 0.825rem;
  color: var(--text-secondary);
}

/* ==========================================================================
   Sections & Headlines
   ========================================================================== */
.section {
  padding: 7.5rem 0;
  border-bottom: 1px solid var(--border-subtle);
  position: relative;
  z-index: 1;
}

.bg-elevated {
  background-color: var(--bg-surface);
}

.section-pretitle {
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--sysvio-blue);
  margin-bottom: 1rem;
}

.section-header-split {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 3.5rem;
  margin-bottom: 4.5rem;
  align-items: end;
}

.section-header-split h2,
.section-title {
  font-size: clamp(2rem, 3.2vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--text-primary);
}

.section-header-split p {
  font-size: 1.1rem;
  color: var(--text-secondary);
}

/* ==========================================================================
   Capabilities Grid
   ========================================================================== */
.capabilities-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.capability-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all 0.3s var(--ease-smooth);
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(20, 22, 28, 0.04);
}

.capability-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-card-top);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.capability-card:hover {
  transform: translateY(-5px);
  background: var(--bg-card-hover);
  border-color: var(--border-highlight);
  box-shadow: 0 10px 30px rgba(55, 173, 233, 0.15);
}

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

.highlight-card {
  border-color: var(--border-highlight);
  box-shadow: 0 4px 16px rgba(55, 173, 233, 0.1);
}
.highlight-card::before {
  opacity: 1;
}

.card-eyebrow {
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.highlight-eyebrow {
  color: var(--sysvio-blue);
}

.capability-card h3 {
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 1rem;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.capability-card p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  flex-grow: 1;
}

.capability-tags {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  border-top: 1px solid var(--border-subtle);
  padding-top: 1.5rem;
}

.tag {
  font-size: 0.825rem;
  color: var(--text-primary);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
}

.tag::before {
  content: "—";
  margin-right: 0.6rem;
  color: var(--sysvio-blue);
  font-weight: 800;
}

/* ==========================================================================
   Practices Focus
   ========================================================================== */
.practices-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.practice-box {
  padding: 2.25rem;
  border-top: 1px solid var(--border-subtle);
  border-right: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  border-left: 3px solid var(--sysvio-gray);
  background: var(--bg-surface);
  border-radius: 0 8px 8px 0;
  transition: all 0.3s var(--ease-smooth);
}

.practice-box:hover {
  border-left-color: var(--sysvio-blue);
  background: rgba(55, 173, 233, 0.05);
  transform: translateX(4px);
}

.practice-box h4 {
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 0.35rem;
  color: var(--text-primary);
}

.practice-subtitle {
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--sysvio-blue);
  margin-bottom: 1rem;
}

.practice-box p {
  font-size: 0.925rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ==========================================================================
   Advisory Framework (Timeline)
   ========================================================================== */
.timeline-container {
  margin-top: 4.5rem;
  display: flex;
  flex-direction: column;
}

.timeline-step {
  display: grid;
  grid-template-columns: 85px 1fr;
  padding: 2.5rem 0;
  border-top: 1px solid var(--border-subtle);
  transition: border-color 0.3s ease;
}

.timeline-step:hover {
  border-top-color: var(--sysvio-blue);
}

.step-marker {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--sysvio-blue);
  letter-spacing: -0.02em;
}

.step-content h3 {
  font-size: 1.3rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.step-content p {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 720px;
}

/* ==========================================================================
   CTA Section
   ========================================================================== */
.cta-section {
  padding: 6rem 0;
}

.cta-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 4.5rem 2rem;
  text-align: center;
  box-shadow: 0 4px 20px rgba(20, 22, 28, 0.04);
  position: relative;
}

/* Remove the glaring top accent line */
.cta-box::before {
  display: none;
}

.cta-inner {
  max-width: 680px;
  margin: 0 auto;
}

.cta-inner h2 {
  font-size: clamp(2.25rem, 3.8vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
  color: var(--text-primary);
}

.cta-inner p {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
}

/* ==========================================================================
   Footer
   ========================================================================== */
footer {
  border-top: 1px solid var(--border-subtle);
  padding: 5rem 0 3rem;
  background-color: var(--bg-surface);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 4rem;
}

.footer-logo {
  height: 32px;
  margin-bottom: 0.5rem;
}

.footer-legal {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
  line-height: 1.6;
}

.footer-heading {
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
}

.footer-data {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.footer-links-list {
  list-style: none;
}

.footer-links-list li {
  margin-bottom: 0.6rem;
}

.footer-links-list a {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--sysvio-blue);
  transition: color 0.2s ease;
}

.footer-links-list a:hover {
  color: var(--blue-shade-30);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border-subtle);
  padding-top: 2rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Mobile & Tablet Responsiveness (Optimized for iPhone & Small Viewports)
   ========================================================================== */

/* Prevent horizontal viewport wobble on iOS Safari */
html, body {
  overflow-x: hidden;
  width: 100%;
}

@media (max-width: 960px) {
  .nav-links {
    display: none;
  }

  .section-header-split {
    grid-template-columns: 1fr;
    gap: 1.25rem;
    margin-bottom: 2.5rem;
  }

  .capabilities-grid,
  .practices-grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

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

  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}

@media (max-width: 768px) {
  /* 1. Reclaim screen real estate from 64px down to 32px total margin */
  .container {
    padding: 0 1rem;
  }

  /* 2. Top bar: scale logo slightly so it sits neatly next to the CTA */
  .nav-container {
    height: 4.5rem;
    padding: 0 1rem;
  }

  .brand-logo {
    height: 28px;
    max-width: 170px;
  }

  .btn-nav {
    padding: 0.45rem 0.85rem;
    font-size: 0.75rem;
    white-space: nowrap;
  }

  /* 3. Hero: tighten vertical padding and scale font to fit viewport */
  .hero {
    padding: 3.5rem 0 2.5rem;
  }

  .pill-badge {
    margin-bottom: 1.5rem;
    font-size: 0.7rem;
    padding: 0.35rem 0.85rem;
    line-height: 1.3;
  }

  .hero h1 {
    font-size: clamp(2rem, 7.8vw, 2.75rem);
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin-bottom: 1.25rem;
    overflow-wrap: break-word;
  }

  .hero-description {
    font-size: 1.05rem;
    line-height: 1.55;
    margin-bottom: 2rem;
  }

  /* Full-width buttons on mobile for thumb tap target */
  .hero-actions {
    flex-direction: column;
    gap: 0.75rem;
    width: 100%;
  }

  .hero-actions .btn {
    width: 100%;
    padding: 0.9rem 1.25rem;
    font-size: 0.95rem;
    text-align: center;
  }

  /* 4. Ledger Band: tighten internal cell padding */
  .ledger-grid {
    grid-template-columns: 1fr 1fr;
  }

  .ledger-item {
    padding: 1.5rem 1rem;
  }

  .ledger-item:nth-child(2) {
    border-right: none;
  }

  .ledger-item:nth-child(3),
  .ledger-item:nth-child(4) {
    border-top: 1px solid var(--border-subtle);
  }

  .ledger-value {
    font-size: 2rem;
    margin-bottom: 0.35rem;
  }

  .ledger-label {
    font-size: 0.75rem;
  }

  .ledger-detail {
    font-size: 0.75rem;
    line-height: 1.35;
  }

  /* 5. Sections: reduce vertical spacing */
  .section {
    padding: 4rem 0;
  }

  .section-title,
  .section-header-split h2 {
    font-size: 1.85rem;
    line-height: 1.2;
  }

  .section-header-split p {
    font-size: 1rem;
  }

  /* 6. Cards: comfortable padding */
  .capability-card {
    padding: 1.75rem 1.25rem;
  }

  .capability-card h3 {
    font-size: 1.2rem;
  }

  .practice-box {
    padding: 1.5rem 1.25rem;
  }

  .practice-box h4 {
    font-size: 1.15rem;
  }

  /* 7. Timeline: narrow step indicator so text has room to breathe */
  .timeline-container {
    margin-top: 2.5rem;
  }

  .timeline-step {
    grid-template-columns: 48px 1fr;
    gap: 0.75rem;
    padding: 1.5rem 0;
  }

  .step-marker {
    font-size: 1.4rem;
  }

  .step-content h3 {
    font-size: 1.15rem;
    margin-bottom: 0.35rem;
  }

  .step-content p {
    font-size: 0.925rem;
    line-height: 1.5;
  }

  /* 8. CTA Banner */
  .cta-section {
    padding: 4rem 0 3rem;
  }

  .cta-box {
    padding: 3rem 1.25rem;
    border-radius: 10px;
  }

  .cta-inner h2 {
    font-size: 1.75rem;
    line-height: 1.2;
    margin-bottom: 1rem;
  }

  .cta-inner p {
    font-size: 1rem;
    margin-bottom: 2rem;
  }

  .cta-actions .btn {
    width: 100%;
  }

  /* 9. Footer */
  footer {
    padding: 3.5rem 0 2rem;
  }

  .footer-logo {
    height: 28px;
  }
}