/* shared.css — Lexular Design System */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* ─── Design Tokens ─────────────────────────────────────────────────────── */
:root {
  --color-bg:           #FFFFFF;
  --color-bg-alt:       #F8F9FA;
  --color-dark:         #0B0F19;
  --color-accent:       #2563EB;
  --color-accent-hover: #1D4ED8;
  --color-border:       #E5E7EB;
  --color-text:         #111827;
  --color-muted:        #6B7280;
  --font-sans:          'Inter', sans-serif;
  --font-mono:          ui-monospace, 'SFMono-Regular', Menlo, Monaco, Consolas, monospace;
}

/* ─── Base ──────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  margin: 0;
}

/* ─── Dot-grid hero background ──────────────────────────────────────────── */
.dot-grid-hero {
  background-image: radial-gradient(#D1D5DB 1px, transparent 1px);
  background-size: 28px 28px;
}

/* ─── Typography helpers ─────────────────────────────────────────────────── */
.label-mono {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.metric-display {
  font-family: var(--font-mono);
  font-size: 2.75rem;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: -0.02em;
  line-height: 1;
}

/* ─── Buttons ────────────────────────────────────────────────────────────── */
.btn-primary {
  display: inline-block;
  background: var(--color-accent);
  color: #fff;
  padding: 0.75rem 1.75rem;
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: 2px solid var(--color-accent);
  border-radius: 0;
  transition: background 0.15s ease, border-color 0.15s ease;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
}
.btn-primary:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
}

.btn-ghost {
  display: inline-block;
  background: transparent;
  color: var(--color-text);
  padding: 0.75rem 1.75rem;
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: 2px solid var(--color-border);
  border-radius: 0;
  transition: border-color 0.15s ease, color 0.15s ease;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
}
.btn-ghost:hover {
  border-color: var(--color-text);
}

/* ─── Surface card ───────────────────────────────────────────────────────── */
.surface-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 0;
}

/* ─── Compliance badge ───────────────────────────────────────────────────── */
.badge-compliance {
  border: 1px solid var(--color-border);
  padding: 0.875rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  min-width: 148px;
}
.badge-compliance .badge-title {
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text);
}
.badge-compliance .badge-sub {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted);
}

/* ─── Mockup primitives (Solutions page) ────────────────────────────────── */
.mockup-wrap {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  overflow: hidden;
}
.mockup-titlebar {
  background: #F3F4F6;
  border-bottom: 1px solid var(--color-border);
  padding: 0.5rem 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.6875rem;
  color: var(--color-muted);
}
.mockup-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #D1D5DB;
  flex-shrink: 0;
}
.mockup-line {
  height: 9px;
  background: #E5E7EB;
  border-radius: 2px;
  display: block;
}
.mockup-line-blue {
  height: 9px;
  background: #BFDBFE;
  border-radius: 2px;
  display: block;
}
.mockup-pill {
  display: inline-block;
  padding: 2px 8px;
  background: #DBEAFE;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: 0;
}
.mockup-badge-green {
  display: inline-block;
  padding: 2px 8px;
  background: #D1FAE5;
  color: #065F46;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: 0;
}

/* ─── Form inputs ────────────────────────────────────────────────────────── */
.form-input {
  width: 100%;
  border: 1px solid var(--color-border);
  padding: 0.75rem 1rem;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  color: var(--color-text);
  background: var(--color-bg);
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  border-radius: 0;
  appearance: none;
  -webkit-appearance: none;
}
.form-input:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}
.form-input.error {
  border-color: #EF4444;
}
.form-label {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--color-text);
  margin-bottom: 0.375rem;
}
.error-msg {
  font-size: 0.75rem;
  color: #EF4444;
  margin-top: 0.25rem;
}
.error-msg.hidden { display: none; }

/* ─── Nav ────────────────────────────────────────────────────────────────── */
#site-nav a.nav-active {
  color: var(--color-accent) !important;
  border-bottom: 2px solid var(--color-accent);
  padding-bottom: 2px;
}

/* ─── Language toggle ────────────────────────────────────────────────────── */
#lang-toggle {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-muted);
  border: 1px solid var(--color-border);
  padding: 0.25rem 0.6rem;
  background: transparent;
  cursor: pointer;
  transition: border-color 0.15s ease, color 0.15s ease;
}
#lang-toggle:hover {
  color: var(--color-text);
  border-color: var(--color-text);
}

/* ─── Diagram arrows (Technology page) ──────────────────────────────────── */
.diagram-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  color: #9CA3AF;
  font-size: 1.5rem;
  padding: 0 0.5rem;
  flex-shrink: 0;
}

/* ─── Dark section overrides ─────────────────────────────────────────────── */
.dark-section .surface-card {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.1);
}
.dark-section .label-mono {
  color: #6B7280;
}

/* ─── Utility: visually hidden (for accessibility) ───────────────────────── */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* ─── Smooth scroll + ROI anchor offset ─────────────────────────────────── */
html { scroll-behavior: smooth; }
#roi-calculator { scroll-margin-top: 4.5rem; }

/* ─── ROI range slider ───────────────────────────────────────────────────── */
.roi-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 2px;
  background: #374151;
  outline: none;
  cursor: pointer;
  border-radius: 0;
  padding: 0;
}
.roi-slider::-webkit-slider-runnable-track {
  height: 2px;
  background: #374151;
}
.roi-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  background: #2563EB;
  border: 2px solid #1D4ED8;
  border-radius: 0;
  cursor: pointer;
  margin-top: -9px;
}
.roi-slider::-moz-range-track {
  height: 2px;
  background: #374151;
  border: none;
}
.roi-slider::-moz-range-thumb {
  width: 20px;
  height: 20px;
  background: #2563EB;
  border: 2px solid #1D4ED8;
  border-radius: 0;
  cursor: pointer;
}
.roi-slider:focus::-webkit-slider-thumb {
  box-shadow: 0 0 0 3px rgba(37,99,235,0.3);
}