/* ============================================================
   AUTHENTIFIC — SHARED DESIGN SYSTEM
   styles.css v1.0
   Enterprise Anti-Counterfeit QR Technology Platform
   ============================================================ */


/* ----------------------------------------------------------
   1. ROOT VARIABLES
   ---------------------------------------------------------- */
:root {
  /* Core palette */
  --color-bg:           #06101E;
  --color-surface:      #0C1A2E;
  --color-elevated:     #122035;
  --color-border:       rgba(255, 255, 255, 0.06);
  --color-border-light: rgba(255, 255, 255, 0.12);

  /* Accent */
  --color-accent:       #00C9E8;
  --color-accent-hover: #00AACB;
  --color-accent-glow:  rgba(0, 201, 232, 0.12);
  --color-accent-2:     #3D7EFF;
  --color-accent-2-glow:rgba(61, 126, 255, 0.10);

  /* Status */
  --color-success:      #10C97E;
  --color-warning:      #F59E0B;
  --color-error:        #EF4444;

  /* Text */
  --color-text:         #E8F0FF;
  --color-text-sub:     #7A96BE;
  --color-text-muted:   #3D5070;

  /* Typography */
  --font-sans: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont,
               'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'Cascadia Code', 'Consolas', 'Courier New', monospace;

  /* Type scale */
  --text-xs:   0.75rem;    /* 12px */
  --text-sm:   0.875rem;   /* 14px */
  --text-base: 1rem;       /* 16px */
  --text-lg:   1.125rem;   /* 18px */
  --text-xl:   1.25rem;    /* 20px */
  --text-2xl:  1.5rem;     /* 24px */
  --text-3xl:  1.875rem;   /* 30px */
  --text-4xl:  2.25rem;    /* 36px */
  --text-5xl:  3rem;       /* 48px */
  --text-6xl:  3.75rem;    /* 60px */

  /* Spacing scale */
  --sp-1:  0.25rem;
  --sp-2:  0.5rem;
  --sp-3:  0.75rem;
  --sp-4:  1rem;
  --sp-5:  1.25rem;
  --sp-6:  1.5rem;
  --sp-8:  2rem;
  --sp-10: 2.5rem;
  --sp-12: 3rem;
  --sp-16: 4rem;
  --sp-20: 5rem;
  --sp-24: 6rem;
  --sp-32: 8rem;

  /* Layout */
  --max-width:     1200px;
  --header-height: 72px;

  /* Border radii */
  --radius-sm:   4px;
  --radius-md:   8px;
  --radius-lg:   12px;
  --radius-xl:   16px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm:     0 1px 4px rgba(0, 0, 0, 0.35);
  --shadow-md:     0 4px 20px rgba(0, 0, 0, 0.45);
  --shadow-lg:     0 8px 40px rgba(0, 0, 0, 0.55);
  --shadow-accent: 0 0 32px rgba(0, 201, 232, 0.15);

  /* Transitions */
  --t-fast:  150ms ease;
  --t-base:  250ms ease;
  --t-slow:  400ms ease;
}


/* ----------------------------------------------------------
   2. RESET & BASE
   ---------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

ul,
ol {
  list-style: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
  font-size: inherit;
}

input,
textarea,
select {
  font-family: inherit;
  font-size: inherit;
}

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}


/* ----------------------------------------------------------
   3. TYPOGRAPHY
   ---------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.025em;
  color: var(--color-text);
}

h1 { font-size: var(--text-5xl); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }
h5 { font-size: var(--text-lg); }
h6 { font-size: var(--text-base); }

p {
  color: var(--color-text-sub);
  max-width: 68ch;
}

.lead {
  font-size: var(--text-xl);
  line-height: 1.6;
  color: var(--color-text-sub);
  max-width: 60ch;
}

.eyebrow {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--sp-3);
}

.text-center { text-align: center; }
.text-muted   { color: var(--color-text-muted); }
.text-sub     { color: var(--color-text-sub); }
.text-accent  { color: var(--color-accent); }

code,
pre {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--color-elevated);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-sm);
  padding: 0.15em 0.45em;
}

pre {
  padding: var(--sp-4) var(--sp-5);
  overflow-x: auto;
}


/* ----------------------------------------------------------
   4. LAYOUT
   ---------------------------------------------------------- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--sp-6);
}

.section {
  padding: var(--sp-20) 0;
}

.section--sm {
  padding: var(--sp-12) 0;
}

.section--lg {
  padding: var(--sp-32) 0;
}

/* Surface variation */
.section--surface {
  background: var(--color-surface);
}

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

/* Section header */
.section-header {
  margin-bottom: var(--sp-12);
}

.section-header.center {
  text-align: center;
}

.section-header.center p {
  margin: 0 auto;
}

.section-header h2 {
  margin-bottom: var(--sp-4);
}

.section-header p {
  font-size: var(--text-lg);
  color: var(--color-text-sub);
}

/* Dividers */
.divider {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: var(--sp-16) 0;
}


/* ----------------------------------------------------------
   5. BUTTONS
   ---------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: var(--text-base);
  letter-spacing: -0.01em;
  line-height: 1;
  transition: background var(--t-fast), color var(--t-fast),
              border-color var(--t-fast), box-shadow var(--t-fast),
              transform var(--t-fast);
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

/* Primary */
.btn-primary {
  background: var(--color-accent);
  color: #03080F;
  border: 1.5px solid var(--color-accent);
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  color: #03080F;
  box-shadow: var(--shadow-accent);
}

/* Secondary / outline */
.btn-secondary {
  background: transparent;
  color: var(--color-text);
  border: 1.5px solid var(--color-border-light);
}

.btn-secondary:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: var(--color-accent-glow);
}

/* Ghost */
.btn-ghost {
  background: transparent;
  color: var(--color-accent);
  border: 1.5px solid transparent;
  padding-left: 0;
  padding-right: 0;
}

.btn-ghost:hover {
  color: var(--color-accent-hover);
}

/* Sizes */
.btn-sm {
  padding: 0.55rem 1.25rem;
  font-size: var(--text-sm);
}

.btn-lg {
  padding: 0.95rem 2.25rem;
  font-size: var(--text-lg);
}

/* Button group */
.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
  align-items: center;
}


/* ----------------------------------------------------------
   6. CARDS
   ---------------------------------------------------------- */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--sp-8);
  transition: border-color var(--t-base), box-shadow var(--t-base),
              transform var(--t-base);
}

.card:hover {
  border-color: rgba(0, 201, 232, 0.25);
  box-shadow: var(--shadow-accent);
  transform: translateY(-2px);
}

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

.card--flat {
  transition: none;
}

.card--flat:hover {
  transform: none;
  box-shadow: none;
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--color-accent-glow);
  border: 1px solid rgba(0, 201, 232, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--sp-5);
  font-size: 1.4rem;
  color: var(--color-accent);
}

.card h3 {
  font-size: var(--text-xl);
  margin-bottom: var(--sp-3);
}

.card p {
  font-size: var(--text-sm);
  line-height: 1.7;
  max-width: none;
}

/* Feature card with accent bar */
.card--feature {
  border-top: 2px solid var(--color-accent);
}

/* Stat card */
.card--stat {
  text-align: center;
  padding: var(--sp-10) var(--sp-8);
}

.stat-value {
  font-size: var(--text-5xl);
  font-weight: 800;
  color: var(--color-accent);
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: var(--sp-2);
}

.stat-label {
  font-size: var(--text-sm);
  color: var(--color-text-sub);
  font-weight: 500;
}


/* ----------------------------------------------------------
   7. GRID SYSTEM
   ---------------------------------------------------------- */
.grid {
  display: grid;
  gap: var(--sp-6);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-auto { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }

/* Flex utilities */
.flex        { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between{ display: flex; align-items: center; justify-content: space-between; }
.flex-col    { display: flex; flex-direction: column; }
.gap-4       { gap: var(--sp-4); }
.gap-6       { gap: var(--sp-6); }
.gap-8       { gap: var(--sp-8); }

/* Two-column with text + visual */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-16);
  align-items: center;
}

.split--reverse .split-visual {
  order: -1;
}


/* ----------------------------------------------------------
   8. FORMS
   ---------------------------------------------------------- */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  margin-bottom: var(--sp-5);
}

.form-label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
}

.form-label span {
  color: var(--color-accent);
  margin-left: 2px;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--color-elevated);
  border: 1.5px solid var(--color-border-light);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: var(--text-base);
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
  appearance: none;
}

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

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-glow);
}

.form-textarea {
  resize: vertical;
  min-height: 140px;
  line-height: 1.6;
}

.form-hint {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.form-error {
  font-size: var(--text-xs);
  color: var(--color-error);
}

.form-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%237A96BE' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

.form-check {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-3);
  font-size: var(--text-sm);
  color: var(--color-text-sub);
}

.form-check input[type="checkbox"] {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  margin-top: 2px;
  accent-color: var(--color-accent);
  cursor: pointer;
}

.form-submit {
  margin-top: var(--sp-4);
}

/* Success / error states */
.form-success {
  background: rgba(16, 201, 126, 0.08);
  border: 1px solid rgba(16, 201, 126, 0.3);
  border-radius: var(--radius-md);
  padding: var(--sp-5) var(--sp-6);
  color: var(--color-success);
  font-size: var(--text-sm);
  display: none;
}


/* ----------------------------------------------------------
   9. HEADER & NAVIGATION
   ---------------------------------------------------------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(6, 16, 30, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--t-base), box-shadow var(--t-base);
}

.site-header.scrolled {
  background: rgba(6, 16, 30, 0.97);
  box-shadow: 0 1px 32px rgba(0, 0, 0, 0.5);
}

.header-inner {
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-8);
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  text-decoration: none;
  flex-shrink: 0;
}

.logo:hover {
  text-decoration: none;
}

/* [FUTURE: Replace .logo-mark with an SVG logo asset] */
.logo-mark {
  color: var(--color-accent);
  font-size: 1.5rem;
  line-height: 1;
  font-weight: 900;
  letter-spacing: -0.05em;
}

.logo-text {
  font-size: 1.125rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--color-text);
}

/* Main nav */
.main-nav {
  flex: 1;
  display: flex;
  justify-content: flex-end;
  margin-right: var(--sp-4);
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--sp-1);
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--sp-1);
  padding: var(--sp-2) var(--sp-3);
  color: var(--color-text-sub);
  font-size: var(--text-sm);
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: color var(--t-fast), background var(--t-fast);
  white-space: nowrap;
  text-decoration: none;
  background: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.05);
  text-decoration: none;
}

/* Dropdown */
.nav-item-dropdown {
  position: relative;
}

.nav-chevron {
  font-size: 0.7em;
  transition: transform var(--t-fast);
  display: inline-block;
}

.nav-item-dropdown:hover .nav-chevron,
.nav-item-dropdown.open .nav-chevron {
  transform: rotate(180deg);
}

.nav-dropdown {
  position: absolute;
  top: calc(100% + var(--sp-2));
  left: 0;
  min-width: 220px;
  background: var(--color-elevated);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: var(--sp-2);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity var(--t-fast), visibility var(--t-fast),
              transform var(--t-fast);
}

.nav-item-dropdown:hover .nav-dropdown,
.nav-item-dropdown.open .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-dropdown-link {
  display: block;
  padding: var(--sp-3) var(--sp-4);
  color: var(--color-text-sub);
  font-size: var(--text-sm);
  border-radius: var(--radius-md);
  transition: color var(--t-fast), background var(--t-fast);
  text-decoration: none;
}

.nav-dropdown-link:hover {
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.05);
  text-decoration: none;
}

/* Header CTA */
.header-cta {
  flex-shrink: 0;
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 0;
  flex-shrink: 0;
}

.nav-toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--t-base), opacity var(--t-base), width var(--t-base);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
  width: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}


/* ----------------------------------------------------------
   10. FOOTER
   ---------------------------------------------------------- */
.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--sp-16) 0 var(--sp-10);
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: var(--sp-8);
  margin-bottom: var(--sp-12);
}

.footer-brand .logo {
  margin-bottom: var(--sp-4);
}

.footer-tagline {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  max-width: 28ch;
  line-height: 1.7;
}

.footer-heading {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--sp-4);
}

.footer-nav ul {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

.footer-nav a {
  font-size: var(--text-sm);
  color: var(--color-text-sub);
  transition: color var(--t-fast);
  text-decoration: none;
}

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

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: var(--sp-6);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--sp-3);
}

.footer-copy,
.footer-legal {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  max-width: none;
}


/* ----------------------------------------------------------
   11. HERO
   ---------------------------------------------------------- */
.hero {
  padding: calc(var(--header-height) + var(--sp-20)) 0 var(--sp-20);
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

/* Subtle background grid pattern */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 201, 232, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 201, 232, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

/* Radial glow behind hero content */
.hero::after {
  content: '';
  position: absolute;
  top: 20%;
  right: 10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 201, 232, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 760px;
}

.hero h1 {
  font-size: clamp(2.5rem, 5vw, 3.75rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.04em;
  margin-bottom: var(--sp-6);
}

.hero h1 em {
  font-style: normal;
  color: var(--color-accent);
}

.hero .lead {
  margin-bottom: var(--sp-8);
  font-size: clamp(1rem, 2vw, 1.2rem);
}

/* Inner page hero (smaller) */
.page-hero {
  padding: calc(var(--header-height) + var(--sp-16)) 0 var(--sp-16);
  background: linear-gradient(180deg, var(--color-surface) 0%, var(--color-bg) 100%);
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 201, 232, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 201, 232, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

.page-hero .container {
  position: relative;
  z-index: 1;
}

.page-hero h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  margin-bottom: var(--sp-4);
  letter-spacing: -0.04em;
}

.page-hero .lead {
  max-width: 56ch;
}


/* ----------------------------------------------------------
   12. CTA SECTIONS
   ---------------------------------------------------------- */
.cta-section {
  background: var(--color-elevated);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: var(--sp-20) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(0, 201, 232, 0.07) 0%, transparent 70%);
  pointer-events: none;
}

.cta-section .container {
  position: relative;
  z-index: 1;
}

.cta-section h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  margin-bottom: var(--sp-4);
}

.cta-section p {
  font-size: var(--text-lg);
  margin: 0 auto var(--sp-8);
  max-width: 54ch;
}


/* ----------------------------------------------------------
   13. FEATURE LISTS & ICON ROWS
   ---------------------------------------------------------- */
.feature-list {
  display: flex;
  flex-direction: column;
  gap: var(--sp-5);
}

.feature-item {
  display: flex;
  gap: var(--sp-4);
  align-items: flex-start;
}

.feature-icon {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  border-radius: var(--radius-md);
  background: var(--color-accent-glow);
  border: 1px solid rgba(0, 201, 232, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: var(--color-accent);
}

.feature-item h4 {
  font-size: var(--text-base);
  margin-bottom: var(--sp-1);
  font-weight: 600;
}

.feature-item p {
  font-size: var(--text-sm);
  line-height: 1.6;
  max-width: none;
}

/* Inline check list */
.check-list {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

.check-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-3);
  font-size: var(--text-sm);
  color: var(--color-text-sub);
}

.check-list li::before {
  content: '✓';
  color: var(--color-accent);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}


/* ----------------------------------------------------------
   14. BADGES & TAGS
   ---------------------------------------------------------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-1);
  padding: 0.2em 0.65em;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.04em;
}

.badge-accent {
  background: var(--color-accent-glow);
  color: var(--color-accent);
  border: 1px solid rgba(0, 201, 232, 0.25);
}

.badge-neutral {
  background: rgba(255, 255, 255, 0.05);
  color: var(--color-text-sub);
  border: 1px solid var(--color-border-light);
}

.badge-success {
  background: rgba(16, 201, 126, 0.1);
  color: var(--color-success);
  border: 1px solid rgba(16, 201, 126, 0.25);
}

/* Industry tags */
.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-top: var(--sp-4);
}


/* ----------------------------------------------------------
   15. ACCORDION / FAQ
   ---------------------------------------------------------- */
.accordion {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.accordion-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.accordion-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-5) var(--sp-6);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
  text-align: left;
  gap: var(--sp-4);
  transition: background var(--t-fast), color var(--t-fast);
}

.accordion-trigger:hover {
  background: rgba(255, 255, 255, 0.03);
}

.accordion-trigger[aria-expanded="true"] {
  color: var(--color-accent);
}

.accordion-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  background: var(--color-elevated);
  color: var(--color-text-sub);
  font-size: 0.85rem;
  transition: transform var(--t-fast), background var(--t-fast), color var(--t-fast);
}

.accordion-trigger[aria-expanded="true"] .accordion-icon {
  transform: rotate(45deg);
  background: var(--color-accent-glow);
  color: var(--color-accent);
}

.accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--t-slow) ease;
}

.accordion-body-inner {
  padding: 0 var(--sp-6) var(--sp-6);
  font-size: var(--text-sm);
  color: var(--color-text-sub);
  line-height: 1.75;
}

.accordion-item.open .accordion-body {
  max-height: 600px;
}


/* ----------------------------------------------------------
   16. PROCESS / STEPS
   ---------------------------------------------------------- */
.steps {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
}

.steps::before {
  content: '';
  position: absolute;
  left: 20px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, var(--color-accent), transparent);
}

.step {
  display: flex;
  gap: var(--sp-6);
  padding-bottom: var(--sp-10);
  position: relative;
}

.step-number {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  border-radius: var(--radius-full);
  background: var(--color-accent);
  color: #03080F;
  font-weight: 800;
  font-size: var(--text-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 1;
}

.step-content h3 {
  font-size: var(--text-xl);
  margin-bottom: var(--sp-3);
}

.step-content p {
  font-size: var(--text-sm);
  line-height: 1.7;
  max-width: none;
}


/* ----------------------------------------------------------
   17. TABLE UTILITIES
   ---------------------------------------------------------- */
.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
}

th {
  background: var(--color-elevated);
  color: var(--color-text-sub);
  font-size: var(--text-xs);
  letter-spacing: 0.07em;
  text-transform: uppercase;
  padding: var(--sp-4) var(--sp-5);
  text-align: left;
  border-bottom: 1px solid var(--color-border-light);
}

td {
  padding: var(--sp-4) var(--sp-5);
  color: var(--color-text-sub);
  border-bottom: 1px solid var(--color-border);
}

tr:last-child td {
  border-bottom: none;
}

tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}


/* ----------------------------------------------------------
   18. LEGAL / CONTENT PAGES
   ---------------------------------------------------------- */
.prose {
  max-width: 72ch;
}

.prose h2 {
  font-size: var(--text-2xl);
  margin-top: var(--sp-12);
  margin-bottom: var(--sp-4);
}

.prose h3 {
  font-size: var(--text-xl);
  margin-top: var(--sp-8);
  margin-bottom: var(--sp-3);
}

.prose p {
  margin-bottom: var(--sp-5);
  max-width: none;
}

.prose ul,
.prose ol {
  list-style: disc;
  padding-left: var(--sp-6);
  margin-bottom: var(--sp-5);
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.prose ol {
  list-style: decimal;
}

.prose li {
  color: var(--color-text-sub);
  font-size: var(--text-base);
  line-height: 1.7;
}

.prose a {
  color: var(--color-accent);
}

.prose strong {
  color: var(--color-text);
}


/* ----------------------------------------------------------
   19. MISCELLANEOUS
   ---------------------------------------------------------- */
/* Visual / placeholder blocks (for future images/diagrams) */
.visual-placeholder {
  background: var(--color-elevated);
  border: 1px dashed var(--color-border-light);
  border-radius: var(--radius-xl);
  min-height: 320px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--sp-3);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  text-align: center;
  padding: var(--sp-8);
}

.visual-placeholder span {
  font-size: 2.5rem;
  opacity: 0.4;
}

/* Tech stat row */
.tech-stats {
  display: flex;
  gap: var(--sp-8);
  flex-wrap: wrap;
  padding: var(--sp-6) 0;
  border-top: 1px solid var(--color-border);
  margin-top: var(--sp-8);
}

.tech-stat-item {
  display: flex;
  flex-direction: column;
  gap: var(--sp-1);
}

.tech-stat-value {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: -0.03em;
}

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

/* Notification / info bar */
.info-bar {
  background: var(--color-accent-glow);
  border: 1px solid rgba(0, 201, 232, 0.2);
  border-radius: var(--radius-md);
  padding: var(--sp-4) var(--sp-5);
  font-size: var(--text-sm);
  color: var(--color-text-sub);
  display: flex;
  align-items: flex-start;
  gap: var(--sp-3);
}

.info-bar-icon {
  color: var(--color-accent);
  flex-shrink: 0;
}


/* ----------------------------------------------------------
   20. RESPONSIVE BREAKPOINTS
   ---------------------------------------------------------- */

/* 1024px — tablet landscape */
@media (max-width: 1024px) {
  :root {
    --header-height: 68px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-10);
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .split {
    gap: var(--sp-10);
  }
}

/* 768px — tablet portrait */
@media (max-width: 768px) {
  h1 { font-size: var(--text-4xl); }
  h2 { font-size: var(--text-3xl); }
  h3 { font-size: var(--text-xl); }

  .section {
    padding: var(--sp-16) 0;
  }

  .section--sm {
    padding: var(--sp-10) 0;
  }

  .grid-3 {
    grid-template-columns: 1fr;
  }

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

  .split {
    grid-template-columns: 1fr;
    gap: var(--sp-8);
  }

  .split--reverse .split-visual {
    order: 0;
  }

  /* Mobile header */
  .nav-toggle {
    display: flex;
  }

  .main-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(6, 16, 30, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    padding: var(--sp-6);
    margin: 0;
    border-top: 1px solid var(--color-border);
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transform: translateX(20px);
    transition: opacity var(--t-base), visibility var(--t-base),
                transform var(--t-base);
    z-index: 999;
  }

  .main-nav.open {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: var(--sp-1);
  }

  .nav-link {
    font-size: var(--text-base);
    padding: var(--sp-4) var(--sp-4);
  }

  .nav-item-dropdown {
    display: flex;
    flex-direction: column;
  }

  .nav-dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    margin-top: var(--sp-1);
    display: none;
    box-shadow: none;
  }

  .nav-item-dropdown.open .nav-dropdown {
    display: block;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--sp-8);
  }

  .footer-brand {
    grid-column: auto;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .tech-stats {
    gap: var(--sp-6);
  }

  .cta-section {
    padding: var(--sp-16) 0;
  }
}

/* 480px — mobile */
@media (max-width: 480px) {
  .container {
    padding: 0 var(--sp-4);
  }

  .hero {
    padding-top: calc(var(--header-height) + var(--sp-12));
    min-height: auto;
    padding-bottom: var(--sp-16);
  }

  .card {
    padding: var(--sp-6);
  }

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

  .btn-group {
    flex-direction: column;
  }

  .btn-group .btn {
    width: 100%;
  }

  .grid-4 {
    grid-template-columns: 1fr;
  }

  .section-header h2 {
    font-size: var(--text-3xl);
  }

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