/* ============================================
   Precision Engineering System — Design Tokens
   Source of truth for color/type/space across
   the public site. Mirrors admin-app/theme.css.
   See DESIGN_SYSTEM.md for canonical rules.
   ============================================ */

:root {
  /* Surfaces */
  --background: #f8f9fa;
  --surface: #f8f9fa;
  --surface-card: #ffffff;
  --surface-low: #f3f4f5;
  --surface-mid: #e8eaeb;
  --surface-high: #e1e3e4;

  /* Text */
  --on-surface: #191c1d;
  --on-surface-variant: #434655;

  /* Borders */
  --outline-variant: #c3c6d7;
  --outline: #737686;

  /* Color roles */
  --primary: #004ac6;
  --on-primary: #ffffff;
  --primary-fixed: #dbe1ff;
  --on-primary-fixed: #00174b;
  --primary-on-dark: #6b8eff;
  --secondary: #4059aa;
  --tertiary: #7a1bc8;
  --error: #ba1a1a;
  --error-container: #ffdad6;

  /* Dark surfaces (contact section) */
  --dark-bg: #0f1115;
  --dark-surface: #14171c;
  --dark-border: #2a2d33;
  --dark-on-surface: #e8eaeb;
  --dark-on-surface-variant: #9ca0ad;

  /* Radii */
  --radius: 4px;
  --radius-lg: 8px;
  --radius-full: 999px;

  /* Spacing scale (4px base) */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 48px;
  --gutter: 24px;
  --margin: 32px;
}

/* ============================================
   Typography utilities
   ============================================ */

.font-display { font-family: 'Space Grotesk', sans-serif; letter-spacing: -0.01em; }
.mono-data    { font-family: 'Space Grotesk', sans-serif; font-feature-settings: 'tnum'; }

.headline-xl { font-family: 'Space Grotesk', sans-serif; font-size: 34px; font-weight: 700; line-height: 1.12; letter-spacing: -0.02em; }
.headline-lg { font-family: 'Space Grotesk', sans-serif; font-size: 26px; font-weight: 600; line-height: 1.18; letter-spacing: -0.01em; }
.headline-md { font-family: 'Space Grotesk', sans-serif; font-size: 20px; font-weight: 600; line-height: 1.25; }

.body-lg { font-size: 17px; line-height: 1.6; }
.body-md { font-size: 15px; line-height: 1.6; }
.body-sm { font-size: 14px; line-height: 1.5; }

.label-md { font-family: 'Inter', sans-serif; font-size: 14px; font-weight: 600; letter-spacing: 0.05em; text-transform: uppercase; }
.label-sm { font-family: 'Inter', sans-serif; font-size: 12px; font-weight: 500; letter-spacing: 0.02em; text-transform: uppercase; }

@media (min-width: 768px) {
  .headline-xl { font-size: 48px; }
  .headline-lg { font-size: 32px; }
  .headline-md { font-size: 24px; }
  .body-lg { font-size: 18px; }
  .body-md { font-size: 16px; }
}

/* ============================================
   Component utilities (ds-* prefix)
   ============================================ */

.ds-shell {
  max-width: 80rem; /* 1280px — matches Tailwind max-w-7xl used by legacy pages */
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--margin);
  padding-right: var(--margin);
}
@media (max-width: 640px) {
  .ds-shell {
    padding-left: var(--space-md);
    padding-right: var(--space-md);
  }
}

.ds-eyebrow {
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--primary);
}

.ds-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: var(--radius);
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 14px;
  transition: transform 80ms ease, background 120ms ease, border-color 120ms ease;
}
.ds-btn:active { transform: translateY(1px); }
.ds-btn-primary { background: var(--primary); color: var(--on-primary); border: 1px solid var(--primary); }
.ds-btn-primary:hover { background: #003ea8; border-color: #003ea8; }
.ds-btn-secondary { background: transparent; color: var(--on-surface); border: 1px solid var(--outline-variant); }
.ds-btn-secondary:hover { border-color: var(--outline); background: var(--surface-low); }

.ds-card {
  background: var(--surface-card);
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-lg);
}
.ds-card-hover { transition: border-color 120ms ease, box-shadow 120ms ease; }
.ds-card-hover:hover { border-color: var(--outline); box-shadow: 0 4px 12px rgba(15, 17, 21, 0.06); }

.ds-input {
  width: 100%;
  padding: 10px 12px;
  background: var(--surface-card);
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius);
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  color: var(--on-surface);
  transition: border-color 120ms ease, box-shadow 120ms ease;
}
.ds-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 1px var(--primary);
}

.ds-divider { border-top: 1px solid var(--outline-variant); }

.ds-hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(120% 80% at 100% 0%, rgba(0, 74, 198, 0.06), transparent 60%),
    var(--background);
}
/* Blueprint grid: 24px minor / 96px major, mask-faded toward edges */
.ds-hero::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(to right,  rgba(67,70,85,0.06) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(67,70,85,0.06) 1px, transparent 1px),
    linear-gradient(to right,  rgba(67,70,85,0.025) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(67,70,85,0.025) 1px, transparent 1px);
  background-size: 96px 96px, 96px 96px, 24px 24px, 24px 24px;
  mask-image: radial-gradient(120% 80% at 30% 30%, #000 0%, rgba(0,0,0,0.55) 60%, transparent 100%);
  -webkit-mask-image: radial-gradient(120% 80% at 30% 30%, #000 0%, rgba(0,0,0,0.55) 60%, transparent 100%);
  pointer-events: none;
  animation: dsGridDrift 80s linear infinite;
}
@keyframes dsGridDrift {
  from { background-position: 0 0, 0 0, 0 0, 0 0; }
  to   { background-position: 96px 96px, 96px 96px, 24px 24px, 24px 24px; }
}

/* Pulsing primary period — used as the "." after a highlighted headline word */
.ds-period {
  display: inline-block;
  width: 0.16em; height: 0.16em;
  border-radius: 999px;
  background: var(--primary);
  vertical-align: baseline;
  margin-left: 0.06em;
  box-shadow: 0 0 0 0 rgba(0,74,198,0.55);
  animation: dsPulseDot 1.6s ease-out infinite;
}
@keyframes dsPulseDot {
  0%   { box-shadow: 0 0 0 0 rgba(0,74,198,0.55); }
  80%  { box-shadow: 0 0 0 6px rgba(0,74,198,0); }
  100% { box-shadow: 0 0 0 0 rgba(0,74,198,0); }
}

/* Eyebrow with terminal cursor */
.ds-eyebrow.has-caret::after {
  content: "_";
  display: inline-block;
  margin-left: 2px;
  animation: dsCaretBlink 1.05s steps(2) infinite;
  color: var(--primary);
}
@keyframes dsCaretBlink { 50% { opacity: 0; } }

/* Drafting bracket frame — corners only, like CAD selection marks.
   Apply to any positioned wrapper; primary-blue corners outset by 10px. */
.ds-bracket { position: relative; }
.ds-bracket::before,
.ds-bracket::after,
.ds-bracket > .ds-bracket-tr,
.ds-bracket > .ds-bracket-bl {
  content: "";
  position: absolute;
  width: 18px; height: 18px;
  border: 1.5px solid var(--primary);
  pointer-events: none;
}
.ds-bracket::before              { top: -10px;    left: -10px;  border-right: 0; border-bottom: 0; }
.ds-bracket::after               { bottom: -10px; right: -10px; border-left: 0;  border-top: 0; }
.ds-bracket > .ds-bracket-tr     { top: -10px;    right: -10px; border-left: 0;  border-bottom: 0; }
.ds-bracket > .ds-bracket-bl     { bottom: -10px; left: -10px;  border-right: 0; border-top: 0; }

/* ============================================
   NAV — sticky glass bar + caps links + WhatsApp
   ============================================ */

.ds-nav {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(248, 249, 250, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--outline-variant);
}
.ds-nav-inner { height: 64px; }

.ds-wordmark {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.02em;
  color: var(--on-surface);
}

.ds-nav-link {
  position: relative;
  font-family: 'Inter', sans-serif;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--on-surface-variant);
  padding: 6px 0;
  transition: color 120ms ease;
}
.ds-nav-link::after {
  content: "";
  position: absolute; left: 0; right: 100%; bottom: 0;
  height: 1px;
  background: var(--primary);
  transition: right 220ms cubic-bezier(.6,.05,.4,1);
}
.ds-nav-link:hover { color: var(--on-surface); }
.ds-nav-link:hover::after { right: 0; }

.ds-icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius);
  background: var(--surface-card);
  color: var(--on-surface);
  transition: border-color 120ms ease;
}
.ds-icon-btn:hover { border-color: var(--outline); }

/* Hide on desktop — explicit @media (don't depend on Tailwind purge) */
@media (min-width: 768px) {
  .ds-nav-mobile-only { display: none !important; }
}

.ds-mobile-drawer {
  border-top: 1px solid var(--outline-variant);
  background: var(--background);
}
.ds-mobile-drawer a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 0;
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--on-surface);
  border-bottom: 1px solid var(--outline-variant);
}
.ds-mobile-drawer a:last-child { border-bottom: 0; }

/* Language switcher chip */
.ds-lang {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 32px;
  padding: 0 10px;
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius);
  background: var(--surface-card);
  color: var(--on-surface-variant);
  font-family: 'Space Grotesk', sans-serif;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: border-color 120ms ease, color 120ms ease;
}
.ds-lang:hover { border-color: var(--outline); color: var(--on-surface); }
.ds-lang .sep { color: var(--outline-variant); }
.ds-lang .on  { color: var(--on-surface); }
.ds-lang .off { color: var(--outline); }

/* WhatsApp brand-green icon — apply to <svg> inside any WA button */
.ds-wa-icon { color: #25D366; flex-shrink: 0; }

/* ============================================
   STEPPER LINE — draws on intersect via .is-on
   ============================================ */

.ds-stepper-line {
  height: 1px;
  background: var(--outline-variant);
  position: relative;
  overflow: hidden;
}
.ds-stepper-line::after {
  content: "";
  position: absolute; left: 0; top: 0; bottom: 0;
  width: 0;
  background: var(--primary);
  transition: width 1.6s cubic-bezier(.6,.05,.4,1);
}
.ds-stepper-line.is-on::after { width: 100%; }
.ds-stepper-line .ds-stepper-cursor {
  position: absolute; top: -3px;
  width: 7px; height: 7px;
  border-radius: 999px;
  background: var(--primary);
  box-shadow: 0 0 0 3px rgba(0,74,198,0.18);
  left: 0;
  transition: left 1.6s cubic-bezier(.6,.05,.4,1);
}
.ds-stepper-line.is-on .ds-stepper-cursor { left: calc(100% - 7px); }

/* ============================================
   PROCESS — primary canvas + signal-flow connectors
   ============================================ */

.ds-process {
  background: linear-gradient(180deg, var(--primary) 0%, #003ea8 100%);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.ds-process::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(to right,  rgba(255,255,255,0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size: 24px 24px;
  mask-image: radial-gradient(120% 80% at 50% 50%, #000 0%, rgba(0,0,0,0.4) 70%, transparent 100%);
  -webkit-mask-image: radial-gradient(120% 80% at 50% 50%, #000 0%, rgba(0,0,0,0.4) 70%, transparent 100%);
  pointer-events: none;
}
.ds-process > .ds-shell { position: relative; z-index: 1; }
.ds-process h2 { color: #fff; }
.ds-process .ds-stepper-line { background: rgba(255,255,255,0.20); }
.ds-process .ds-stepper-line::after { background: #fff; }
.ds-process .ds-stepper-line .ds-stepper-cursor {
  background: #fff;
  box-shadow: 0 0 0 3px rgba(255,255,255,0.28);
}

.ds-pipeline {
  display: flex;
  align-items: stretch;
  gap: 0;
}
.ds-pipe-step {
  flex: 1 1 0;
  min-width: 0;
  background: var(--surface-card);
  color: var(--on-surface);
  border-radius: var(--radius-lg);
  padding: 24px;
  position: relative;
}
.ds-pipe-link {
  flex: 0 0 56px;
  align-self: center;
  position: relative;
  height: 2px;
  margin: 0 6px;
  background: linear-gradient(to right,
    rgba(255,255,255,0)    0%,
    rgba(255,255,255,0.45) 20%,
    rgba(255,255,255,0.45) 80%,
    rgba(255,255,255,0)    100%);
}
.ds-pipe-link::after {
  content: "";
  position: absolute; right: -1px; top: 50%; transform: translateY(-50%);
  width: 0; height: 0;
  border-top: 4px solid transparent;
  border-bottom: 4px solid transparent;
  border-left: 6px solid rgba(255,255,255,0.7);
}
.ds-pipe-dot {
  position: absolute; top: 50%; left: 0;
  width: 8px; height: 8px;
  margin-top: -4px; margin-left: -4px;
  border-radius: 999px;
  background: #fff;
  box-shadow: 0 0 12px rgba(255,255,255,0.9), 0 0 4px rgba(255,255,255,0.9);
  animation: dsPipeFlow 2.6s cubic-bezier(.55,0,.45,1) infinite;
}
.ds-pipe-link[data-link="0"] .ds-pipe-dot { animation-delay: 0s; }
.ds-pipe-link[data-link="1"] .ds-pipe-dot { animation-delay: 0.55s; }
.ds-pipe-link[data-link="2"] .ds-pipe-dot { animation-delay: 1.10s; }
@keyframes dsPipeFlow {
  0%   { left: 0;    opacity: 0; transform: scale(.5); }
  12%  { opacity: 1; transform: scale(1); }
  88%  { opacity: 1; transform: scale(1); }
  100% { left: 100%; opacity: 0; transform: scale(.5); }
}
@keyframes dsPipeFlowV {
  0%   { top: 0;    opacity: 0; transform: scale(.5); }
  12%  { opacity: 1; transform: scale(1); }
  88%  { opacity: 1; transform: scale(1); }
  100% { top: 100%; opacity: 0; transform: scale(.5); }
}
@media (max-width: 767px) {
  .ds-pipeline { flex-direction: column; }
  .ds-pipe-link {
    flex: 0 0 36px;
    width: 2px; height: 36px;
    align-self: center;
    margin: 6px 0;
    background: linear-gradient(to bottom,
      rgba(255,255,255,0)    0%,
      rgba(255,255,255,0.45) 20%,
      rgba(255,255,255,0.45) 80%,
      rgba(255,255,255,0)    100%);
  }
  .ds-pipe-link::after {
    right: auto; top: auto;
    left: 50%; bottom: -1px;
    transform: translateX(-50%);
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 6px solid rgba(255,255,255,0.7);
    border-bottom: 0;
  }
  .ds-pipe-dot {
    top: 0; left: 50%;
    margin-top: -4px; margin-left: -4px;
    animation-name: dsPipeFlowV;
  }
}

/* ============================================
   CONTACT — dark canvas with industrial WA card
   ============================================ */

.ds-contact { position: relative; overflow: hidden; }
.ds-contact::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(to right,  rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 24px 24px;
  mask-image: radial-gradient(140% 90% at 30% 50%, #000 0%, rgba(0,0,0,0.4) 60%, transparent 100%);
  -webkit-mask-image: radial-gradient(140% 90% at 30% 50%, #000 0%, rgba(0,0,0,0.4) 60%, transparent 100%);
  pointer-events: none;
}
.ds-contact > .ds-shell { position: relative; z-index: 1; }

.ds-contact-eyebrow {
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--primary-on-dark);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.ds-contact-eyebrow .tick {
  width: 6px; height: 6px;
  border-radius: 999px;
  background: var(--primary-on-dark);
}

.ds-contact-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid rgba(255,255,255,0.10);
  border-bottom: 1px solid rgba(255,255,255,0.10);
}
.ds-stat { padding: 22px 0; position: relative; }
.ds-stat + .ds-stat { padding-left: 24px; }
.ds-stat:not(:last-child) { padding-right: 24px; }
.ds-stat + .ds-stat::before {
  content: "";
  position: absolute; left: 0; top: 22px; bottom: 22px;
  width: 1px;
  background: rgba(255,255,255,0.10);
}
.ds-stat .num {
  font-family: 'Space Grotesk', sans-serif;
  font-feature-settings: 'tnum';
  font-size: 32px;
  font-weight: 700;
  line-height: 1;
  color: var(--primary-on-dark);
}
.ds-stat .lbl {
  margin-top: 8px;
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--dark-on-surface-variant);
}

.ds-contact-line {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 15px;
  color: var(--dark-on-surface);
  transition: color 120ms ease;
}
.ds-contact-line:hover { color: #fff; }

.ds-job-card {
  background: var(--surface-card);
  color: var(--on-surface);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255,255,255,0.08);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 100%;
}
.ds-job-card form {
  flex: 1;
  display: flex;
  flex-direction: column;
}
.ds-job-card textarea { flex: 1; min-height: 140px; }
.ds-job-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 16px;
  background: var(--surface-low);
  border-bottom: 1px solid var(--outline-variant);
  font-family: 'Space Grotesk', sans-serif;
  font-size: 11px;
  letter-spacing: 0.10em;
  color: var(--on-surface-variant);
  font-feature-settings: 'tnum';
}
.ds-job-bar .ldot {
  width: 6px; height: 6px;
  border-radius: 999px;
  background: #25D366;
  box-shadow: 0 0 0 0 rgba(37,211,102,0.6);
  animation: dsPulseDotGreen 1.8s ease-out infinite;
}
.ds-job-bar .id { color: var(--on-surface); font-weight: 600; }
.ds-job-bar .status {
  margin-left: auto;
  font-weight: 700;
  color: #1ea654;
  letter-spacing: 0.14em;
}
@keyframes dsPulseDotGreen {
  0%   { box-shadow: 0 0 0 0 rgba(37,211,102,0.55); }
  80%  { box-shadow: 0 0 0 6px rgba(37,211,102,0); }
  100% { box-shadow: 0 0 0 0 rgba(37,211,102,0); }
}
.ds-job-card form { padding: 24px; }
@media (min-width: 768px) {
  .ds-job-card form { padding: 32px; }
}

/* ============================================
   Reduced motion — kill ambient loops + delays
   ============================================ */

@media (prefers-reduced-motion: reduce) {
  .ds-period,
  .ds-eyebrow.has-caret::after,
  .ds-hero::before,
  .ds-pipe-dot,
  .ds-job-bar .ldot {
    animation: none !important;
  }
}

.ds-dark { background: var(--dark-bg); color: var(--dark-on-surface); }
.ds-dark .ds-muted { color: var(--dark-on-surface-variant); }

.ds-link { color: var(--primary); }
.ds-link:hover { text-decoration: underline; }