/* =========================================================
   FATHOMSEC — Shadow AI Discovery
   Aesthetic: technical, security-product. Deep navy + amber.
   ========================================================= */

:root {
  /* Type scale */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 5rem);

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

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;

  /* Transitions */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Content widths */
  --content-narrow: 720px;
  --content-default: 1100px;
  --content-wide: 1280px;

  /* Fonts */
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', Menlo, monospace;
}

/* DARK (default) — security product feel */
:root,
[data-theme='dark'] {
  --color-bg: #0a0e1a;
  --color-surface: #0f1424;
  --color-surface-2: #131829;
  --color-surface-offset: #1a2036;
  --color-divider: #1d2440;
  --color-border: #2a3354;

  --color-text: #e6e9f2;
  --color-text-muted: #8a93ad;
  --color-text-faint: #5b6481;
  --color-text-inverse: #0a0e1a;

  --color-primary: #ffb547;          /* amber — warning / signal accent */
  --color-primary-hover: #ffc673;
  --color-primary-active: #e69a2b;

  --color-success: #5ad8a6;
  --color-warning: #ffb547;
  --color-error: #ff6b8a;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.5);
}

[data-theme='light'] {
  --color-bg: #f8f9fb;
  --color-surface: #ffffff;
  --color-surface-2: #f3f5f9;
  --color-surface-offset: #ebeef4;
  --color-divider: #e2e6ee;
  --color-border: #d4d9e3;

  --color-text: #0a0e1a;
  --color-text-muted: #5a6376;
  --color-text-faint: #9098a8;
  --color-text-inverse: #ffffff;

  --color-primary: #b86b00;
  --color-primary-hover: #944f00;
  --color-primary-active: #6f3b00;

  --shadow-sm: 0 1px 2px rgba(10, 14, 26, 0.06);
  --shadow-md: 0 8px 24px rgba(10, 14, 26, 0.08);
  --shadow-lg: 0 24px 60px rgba(10, 14, 26, 0.12);
}

/* =========================================================
   BASE
   ========================================================= */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  min-height: 100dvh;
  line-height: 1.6;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  background-image:
    radial-gradient(ellipse at 50% -20%, rgba(255, 181, 71, 0.08), transparent 60%),
    radial-gradient(ellipse at 100% 30%, rgba(85, 145, 199, 0.05), transparent 50%);
  background-attachment: fixed;
  overflow-x: hidden;
}

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

input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
}

h1,
h2,
h3 {
  text-wrap: balance;
  line-height: 1.1;
  letter-spacing: -0.02em;
  font-weight: 700;
}

p {
  text-wrap: pretty;
}

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

::selection {
  background: rgba(255, 181, 71, 0.25);
  color: var(--color-text);
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

a,
button,
[role='button'] {
  transition:
    color var(--transition-interactive),
    background var(--transition-interactive),
    border-color var(--transition-interactive),
    transform var(--transition-interactive),
    box-shadow var(--transition-interactive);
}

.mono {
  font-family: var(--font-mono);
  font-feature-settings: 'ss01', 'ss02';
  letter-spacing: -0.01em;
}

/* =========================================================
   LAYOUT
   ========================================================= */
.container {
  width: 100%;
  max-width: var(--content-default);
  margin: 0 auto;
  padding: 0 var(--space-6);
}
.container.narrow {
  max-width: var(--content-narrow);
}

.section {
  padding-block: clamp(var(--space-16), 10vw, var(--space-32));
}
.section-alt {
  background: var(--color-surface);
  border-block: 1px solid var(--color-divider);
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

h2 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-8);
  max-width: 22ch;
}

.lead {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 60ch;
  margin-bottom: var(--space-5);
}

.lead strong {
  color: var(--color-text);
  font-weight: 600;
}

/* =========================================================
   HEADER
   ========================================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(10, 14, 26, 0.7);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-divider);
}
[data-theme='light'] .site-header {
  background: rgba(248, 249, 251, 0.85);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-primary);
  font-weight: 700;
  font-size: var(--text-base);
  letter-spacing: -0.01em;
}
.logo span {
  color: var(--color-text);
}

.header-nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}
.header-nav a {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  font-weight: 500;
}
.header-nav a:hover {
  color: var(--color-text);
}
.header-nav a.btn {
  color: var(--color-text-inverse);
}

@media (max-width: 640px) {
  .header-nav a:not(.btn) {
    display: none;
  }
}

/* =========================================================
   BUTTONS
   ========================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  line-height: 1;
}
.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
}
.btn-primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}
.btn-primary:hover {
  background: var(--color-primary-hover);
  color: var(--color-text-inverse);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.btn-ghost {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}
.btn-ghost:hover {
  background: var(--color-surface-offset);
  color: var(--color-text);
  border-color: var(--color-primary);
}

/* =========================================================
   HERO
   ========================================================= */
.hero {
  padding-top: clamp(var(--space-16), 10vw, var(--space-24));
  padding-bottom: clamp(var(--space-12), 8vw, var(--space-20));
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full, 9999px);
  background: var(--color-surface);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
}
.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-success);
  box-shadow: 0 0 0 3px rgba(90, 216, 166, 0.18);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.hero h1 {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-6);
  max-width: 16ch;
  background: linear-gradient(180deg, var(--color-text) 0%, var(--color-text-muted) 130%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-sub {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 56ch;
  margin-bottom: var(--space-8);
}

.hero-form,
.cta-form {
  display: flex;
  gap: var(--space-3);
  max-width: 520px;
  margin-bottom: var(--space-3);
}
.hero-form input,
.cta-form input {
  flex: 1;
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: var(--text-sm);
  min-width: 0;
}
.hero-form input::placeholder,
.cta-form input::placeholder {
  color: var(--color-text-faint);
}
.hero-form input:focus,
.cta-form input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(255, 181, 71, 0.15);
}

@media (max-width: 540px) {
  .hero-form,
  .cta-form {
    flex-direction: column;
  }
}

.hero-meta,
.cta-meta {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}
.hero-meta {
  margin-bottom: var(--space-12);
}

/* =========================================================
   TERMINAL MOCKUP
   ========================================================= */
.terminal {
  margin-top: var(--space-10);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  max-width: 880px;
}
.terminal-bar {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface-2);
  border-bottom: 1px solid var(--color-divider);
}
.terminal-bar .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-border);
}
.terminal-bar .dot:nth-child(1) { background: #ff6b8a; }
.terminal-bar .dot:nth-child(2) { background: #ffb547; }
.terminal-bar .dot:nth-child(3) { background: #5ad8a6; }
.terminal-title {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}
.terminal-body {
  padding: var(--space-5) var(--space-6);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-text);
  white-space: pre;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.terminal-body .line {
  display: block;
}
.terminal-body .dim { color: var(--color-text-muted); }
.terminal-body .prompt { color: var(--color-success); margin-right: var(--space-2); }
.terminal-body .ok { color: var(--color-success); }
.terminal-body .warn { color: var(--color-warning); font-weight: 600; }
.terminal-body .hi { color: var(--color-primary); font-weight: 600; }
.terminal-body .num { color: var(--color-text); font-weight: 600; }
.terminal-body .risk-h { color: #ff6b8a; font-weight: 600; }
.terminal-body .risk-m { color: var(--color-warning); font-weight: 600; }
.terminal-body .risk-l { color: var(--color-text-muted); }
.terminal-body .link { color: var(--color-primary); text-decoration: underline; text-underline-offset: 3px; }

/* =========================================================
   STATS
   ========================================================= */
.stats {
  padding-block: var(--space-16);
  border-block: 1px solid var(--color-divider);
  background: var(--color-surface);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-8);
}
.stat-num {
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-2);
}
.stat-label {
  font-size: var(--text-sm);
  color: var(--color-text);
  margin-bottom: var(--space-2);
  max-width: 28ch;
}
.stat-source {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

/* =========================================================
   HOW IT WORKS
   ========================================================= */
.how-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
}
.how-card {
  padding: var(--space-8);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  position: relative;
  transition: border-color var(--transition-interactive), transform var(--transition-interactive);
}
.how-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
}
.how-num {
  font-size: var(--text-xs);
  color: var(--color-primary);
  margin-bottom: var(--space-4);
  letter-spacing: 0.2em;
}
.how-card h3 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-3);
}
.how-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}
.how-meta {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-divider);
}

/* =========================================================
   DIFFERENTIATORS
   ========================================================= */
.diff-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-8);
}
.diff {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-3) var(--space-4);
  align-items: start;
}
.diff .check {
  grid-row: span 2;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(255, 181, 71, 0.12);
  color: var(--color-primary);
  font-weight: 700;
  font-size: var(--text-sm);
  margin-top: 2px;
}
.diff h3 {
  font-size: var(--text-base);
  font-weight: 600;
  margin-bottom: 0;
}
.diff p {
  grid-column: 2;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* =========================================================
   PRICING
   ========================================================= */
.price-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-6);
}
.price-card {
  padding: var(--space-8);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  position: relative;
}
.price-card-featured {
  border-color: var(--color-primary);
  background: linear-gradient(180deg, rgba(255, 181, 71, 0.05) 0%, transparent 50%);
}
.featured-tag {
  position: absolute;
  top: -10px;
  right: var(--space-6);
  padding: var(--space-1) var(--space-3);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border-radius: var(--radius-full, 9999px);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.price-card h3 {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-4);
}
.price {
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-1);
}
.price-unit {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-weight: 500;
}
.price-sub {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-bottom: var(--space-6);
}
.price-card ul {
  list-style: none;
  margin-bottom: var(--space-6);
  flex: 1;
}
.price-card li {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  padding-left: var(--space-5);
  margin-bottom: var(--space-2);
  position: relative;
}
.price-card li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-family: var(--font-mono);
}
.price-card .btn {
  width: 100%;
}

/* =========================================================
   CTA SECTION
   ========================================================= */
.cta-section {
  text-align: left;
  background: var(--color-surface);
  border-block: 1px solid var(--color-divider);
}
.cta-section h2 {
  margin-bottom: var(--space-6);
}
.cta-section .lead {
  margin-bottom: var(--space-8);
}
.cta-meta {
  margin-top: var(--space-4);
}

/* =========================================================
   FAQ
   ========================================================= */
.faq {
  border-bottom: 1px solid var(--color-divider);
  padding-block: var(--space-5);
}
.faq summary {
  cursor: pointer;
  font-weight: 600;
  font-size: var(--text-base);
  color: var(--color-text);
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}
.faq summary::-webkit-details-marker {
  display: none;
}
.faq summary::after {
  content: '+';
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  color: var(--color-primary);
  transition: transform var(--transition-interactive);
}
.faq[open] summary::after {
  content: '−';
}
.faq p {
  margin-top: var(--space-4);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  max-width: 70ch;
}

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer {
  padding-block: var(--space-12);
  border-top: 1px solid var(--color-divider);
  background: var(--color-bg);
}
.footer-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-primary);
  font-weight: 700;
}
.footer-brand span {
  color: var(--color-text);
}
.footer-text {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  max-width: 50ch;
}
.footer-meta {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-top: var(--space-2);
}

/* Honeypot — hidden from humans, visible to bots */
.hp-field {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
  opacity: 0;
}