/**
 * Loopline — Design System
 * Kalam CX · loop-line.site
 *
 * Aesthetic: editorial-tech. Paper + ink + signal blue. Hairline borders,
 * faint grids, mono micro-labels, generous negative space, calm motion.
 *
 * Palette:  Signal #2596BE · Ink #13171F · Paper #EEF0F4 · Panel #F7F8FB · Dark #0C1016
 * Type:     Space Grotesk (display) · Plus Jakarta Sans (body) · JetBrains Mono (labels)
 */

/* ============================================================
   TOKENS
   ============================================================ */
:root {
  --paper: #EEF0F4;
  --panel: #F7F8FB;
  --ink: #13171F;
  --ink-80: rgba(19, 23, 31, .80);
  --ink-60: rgba(19, 23, 31, .58);
  --ink-40: rgba(19, 23, 31, .40);
  --ink-30: rgba(19, 23, 31, .30);
  --hair: rgba(19, 23, 31, .14);
  --hair-strong: rgba(19, 23, 31, .22);
  --signal: #2596BE;
  --signal-ink: #1E7A9C;
  --signal-soft: rgba(37, 150, 190, .10);
  --dark: #0C1016;
  --dark-panel: #141922;
  --white: #ffffff;

  --grotesk: 'Space Grotesk', system-ui, sans-serif;
  --sans: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, 'SF Mono', monospace;

  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --ease: cubic-bezier(.2, .7, .2, 1);
  --maxw: 1200px;
}

/* ============================================================
   BASE
   ============================================================ */
* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, .font-grotesk {
  font-family: var(--grotesk);
  letter-spacing: -.03em;
  line-height: 1.05;
  font-weight: 500;
}

::selection { background: var(--signal); color: #fff; }

a { color: inherit; }

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

/* Reduced motion respect */
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
}

/* ============================================================
   LAYOUT HELPERS
   ============================================================ */
.ll-wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 40px; }
@media (max-width: 640px) { .ll-wrap { padding: 0 22px; } }

.hairline { border: 0; border-top: 1px solid var(--hair); margin: 0; }

/* Faint engineering grid — drop into any positioned container */
.grid-bg { position: relative; }
.grid-bg::before {
  content: ''; position: absolute; inset: 0; pointer-events: none; opacity: .5;
  background-image:
    linear-gradient(var(--hair) 1px, transparent 1px),
    linear-gradient(90deg, var(--hair) 1px, transparent 1px);
  background-size: 44px 44px;
  -webkit-mask-image: radial-gradient(circle at center, #000 25%, transparent 78%);
          mask-image: radial-gradient(circle at center, #000 25%, transparent 78%);
}
.grid-bg.on-dark::before {
  background-image:
    linear-gradient(rgba(255,255,255,.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.07) 1px, transparent 1px);
}

/* ============================================================
   MICRO / MONO LABELS
   ============================================================ */
.micro {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ink-60);
}
.micro.on-dark { color: rgba(255, 255, 255, .55); }

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--mono);
  font-size: 11.5px; letter-spacing: .16em; text-transform: uppercase;
  color: var(--signal); font-weight: 500;
}
.eyebrow::before {
  content: ''; width: 22px; height: 1px; background: currentColor; opacity: .7;
}

/* Section heading row: eyebrow left, index right */
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; }
.section-head .idx { font-family: var(--mono); font-size: 12px; color: var(--ink-30); }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  --bg: var(--ink); --fg: #fff; --bd: transparent;
  position: relative;
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  font-family: var(--grotesk); font-weight: 600; font-size: 15px; letter-spacing: -.01em;
  padding: 14px 26px; border-radius: 999px;
  background: var(--bg); color: var(--fg); border: 1px solid var(--bd);
  text-decoration: none; cursor: pointer;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), background .25s, color .25s;
  will-change: transform;
}
.btn:hover { transform: translateY(-2px); }
.btn .arrow { transition: transform .35s var(--ease); }
.btn:hover .arrow { transform: translateX(4px); }

.btn-signal { --bg: var(--signal); --fg: #fff; box-shadow: 0 8px 24px -8px rgba(37, 150, 190,.6); }
.btn-signal:hover { box-shadow: 0 14px 34px -8px rgba(37, 150, 190,.7); }
.btn-ink { --bg: var(--ink); --fg: #fff; }
.btn-ink:hover { box-shadow: 0 14px 30px -12px rgba(19,23,31,.55); }
.btn-light { --bg: #fff; --fg: var(--ink); --bd: var(--hair); }
.btn-ghost { --bg: transparent; --fg: var(--ink); --bd: var(--hair-strong); }
.btn-ghost:hover { --bg: var(--ink); --fg: #fff; }
.btn-ghost.on-dark { --fg: #fff; --bd: rgba(255,255,255,.30); }
.btn-ghost.on-dark:hover { --bg: #fff; --fg: var(--ink); }
.btn-sm { padding: 10px 18px; font-size: 13.5px; }

/* Legacy aliases (kept so un-migrated markup still renders sanely) */
.btn-primary { composes: btn; }
.btn-primary, .btn-secondary, .btn-accent {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  font-family: var(--grotesk); font-weight: 600; font-size: 15px;
  padding: 14px 26px; border-radius: 999px; text-decoration: none; cursor: pointer;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), background .25s, color .25s;
}
.btn-primary { background: var(--signal); color: #fff; border: 1px solid transparent; box-shadow: 0 8px 24px -8px rgba(37, 150, 190,.6); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 34px -8px rgba(37, 150, 190,.7); }
.btn-secondary { background: transparent; color: var(--ink); border: 1px solid var(--hair-strong); }
.btn-secondary:hover { background: var(--ink); color: #fff; transform: translateY(-2px); }
.btn-accent { background: var(--ink); color: #fff; border: 1px solid transparent; }
.btn-accent:hover { transform: translateY(-2px); }

/* ============================================================
   CHIPS / BADGES / PILLS
   ============================================================ */
.pill {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--mono); font-size: 11px; letter-spacing: .12em; text-transform: uppercase;
  padding: 6px 12px; border-radius: 999px; border: 1px solid var(--hair);
  background: var(--panel); color: var(--ink-60);
}
.pill .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--signal); }

/* ============================================================
   CARDS
   ============================================================ */
.card {
  background: var(--panel);
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  padding: 28px;
  transition: transform .4s var(--ease), box-shadow .4s var(--ease), border-color .3s, background .3s;
}
.card:hover {
  transform: translateY(-4px);
  background: #fff;
  border-color: var(--hair-strong);
  box-shadow: 0 24px 48px -28px rgba(19, 23, 31, .35);
}

/* Bordered grid of cells (shares hairlines) */
.cell-grid { display: grid; border-top: 1px solid var(--hair); border-left: 1px solid var(--hair); }
.cell {
  border-right: 1px solid var(--hair); border-bottom: 1px solid var(--hair);
  background: var(--panel); padding: 30px; transition: background .3s;
}
.cell:hover { background: #fff; }

.icon-tile {
  width: 48px; height: 48px; border-radius: 12px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--signal-soft); color: var(--signal);
  border: 1px solid rgba(37, 150, 190,.18);
}
.card:hover .icon-tile { background: var(--signal); color: #fff; }

/* ============================================================
   FORMS
   ============================================================ */
.form-input, .form-textarea, .form-select {
  width: 100%; padding: 13px 16px;
  background: var(--panel); color: var(--ink);
  border: 1px solid var(--hair); border-radius: var(--radius-sm);
  font-family: var(--sans); font-size: 15.5px;
  transition: border-color .25s, box-shadow .25s, background .25s;
}
.form-input:focus, .form-textarea:focus, .form-select:focus {
  outline: none; background: #fff; border-color: var(--signal);
  box-shadow: 0 0 0 3px var(--signal-soft);
}
.form-label {
  display: block; margin-bottom: 7px;
  font-family: var(--mono); font-size: 11px; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-60);
}

/* ============================================================
   NAV / HEADER chrome
   ============================================================ */
.skip-link {
  position: absolute; top: -48px; left: 16px; z-index: 100;
  background: var(--ink); color: #fff; padding: 10px 18px; border-radius: 8px;
  font-family: var(--mono); font-size: 12px; transition: top .3s;
}
.skip-link:focus { top: 12px; }

.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(243, 241, 234, .82);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s, background .3s;
}
.site-header.scrolled { border-bottom-color: var(--hair); background: rgba(243, 241, 234, .92); }

.nav-link {
  position: relative; font-family: var(--grotesk); font-weight: 500; font-size: 15px;
  color: var(--ink-60); padding: 8px 4px; text-decoration: none; transition: color .25s;
}
.nav-link:hover, .nav-link.active { color: var(--ink); }
.nav-link::after {
  content: ''; position: absolute; left: 4px; right: 4px; bottom: 0; height: 1.5px;
  background: var(--signal); transform: scaleX(0); transform-origin: left; transition: transform .3s var(--ease);
}
.nav-link:hover::after, .nav-link.active::after { transform: scaleX(1); }

/* Logo loop hover spin */
.brand-symbol circle { transition: transform .6s var(--ease); transform-origin: center; }
.brand:hover .brand-symbol circle:first-child { transform: rotate(-18deg); }
.brand:hover .brand-symbol circle:last-child { transform: rotate(18deg); }

/* ============================================================
   ANIMATION — scroll reveal
   ============================================================ */
[data-reveal] {
  opacity: 0; transform: translateY(22px);
  transition: opacity .8s var(--ease), transform .8s var(--ease);
}
[data-reveal].is-visible { opacity: 1; transform: none; }
[data-reveal][data-reveal="left"] { transform: translateX(-26px); }
[data-reveal][data-reveal="right"] { transform: translateX(26px); }
[data-reveal][data-reveal="scale"] { transform: scale(.94); }
[data-reveal].is-visible { transform: none; }
/* stagger via inline --d */
[data-reveal] { transition-delay: var(--d, 0ms); }

/* SVG path draw (logo / accents) */
@keyframes ll-draw { to { stroke-dashoffset: 0; } }
.draw path, .draw circle { stroke-dasharray: 1; stroke-dashoffset: 1; }
.draw.is-visible path, .draw.is-visible circle {
  animation: ll-draw 1.6s var(--ease) forwards;
}

/* Float (hero accents) */
@keyframes ll-float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }
.float { animation: ll-float 7s ease-in-out infinite; }

/* Soft pulse for the live dot */
@keyframes ll-pulse { 0%,100% { opacity: 1; transform: scale(1); } 50% { opacity: .4; transform: scale(.7); } }
.live-dot { animation: ll-pulse 2.4s ease-in-out infinite; }

/* Marquee strip */
.marquee { overflow: hidden; -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); }
.marquee__track { display: inline-flex; gap: 56px; white-space: nowrap; animation: ll-marquee 32s linear infinite; }
@keyframes ll-marquee { to { transform: translateX(-50%); } }
.marquee:hover .marquee__track { animation-play-state: paused; }

/* Gradient ink->signal text accent */
.text-signal { color: var(--signal); }
.accent-underline { background: linear-gradient(transparent 62%, var(--signal-soft) 0); }

/* Hero 3D canvas */
.hero-canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }

/* ============================================================
   MODAL / TOAST
   ============================================================ */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(12, 16, 22, .55); backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center; z-index: 80;
  opacity: 0; visibility: hidden; transition: all .3s var(--ease);
}
.modal-overlay.active { opacity: 1; visibility: visible; }
.modal-content {
  background: var(--paper); border: 1px solid var(--hair); border-radius: var(--radius-lg);
  padding: 36px; max-width: 520px; width: 92%; max-height: 90vh; overflow-y: auto;
  transform: translateY(16px) scale(.97); transition: transform .35s var(--ease);
}
.modal-overlay.active .modal-content { transform: none; }

.toast {
  position: fixed; bottom: 24px; right: 24px; z-index: 90;
  background: var(--ink); color: #fff; padding: 14px 22px; border-radius: 12px;
  font-family: var(--mono); font-size: 13px;
  transform: translateY(120px); opacity: 0; transition: all .35s var(--ease);
}
.toast.show { transform: none; opacity: 1; }

/* Utility: hide native scrollbar for marquees/menus */
.no-scrollbar::-webkit-scrollbar { display: none; }
.no-scrollbar { scrollbar-width: none; }

/* ============================================================
   RESPONSIVE FOUNDATIONS  (mobile-first · all devices)
   ============================================================ */

/* Never allow sideways scroll from decorative glows/grids/marquees */
html, body { overflow-x: hidden; max-width: 100%; }
img { height: auto; }
/* Media never overflows its container */
img, svg, video, canvas, iframe { max-width: 100%; }

/* Editorial wrap: comfortable gutters down to small phones */
@media (max-width: 480px) { .ll-wrap { padding-left: 18px; padding-right: 18px; } }

/* Responsive section rhythm — opt-in utility pages can use */
.section-pad { padding-top: 56px; padding-bottom: 56px; }
@media (min-width: 640px) { .section-pad { padding-top: 80px; padding-bottom: 80px; } }
@media (min-width: 1024px) { .section-pad { padding-top: 96px; padding-bottom: 96px; } }

/* Comfortable touch targets on touch / coarse-pointer devices */
@media (hover: none) and (pointer: coarse) {
  .btn { min-height: 48px; }
  .nav-link { padding-top: 10px; padding-bottom: 10px; }
  a.pill, .pill { min-height: 36px; }
}

/* Wide tables (admin) scroll horizontally instead of breaking layout */
.table-wrap { width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; }
.table-wrap > table { min-width: 640px; }

/* Calmer decorative density on small screens */
@media (max-width: 640px) {
  .grid-bg::before { background-size: 30px 30px; }
  .modal-content { padding: 24px; border-radius: 18px; }
  .toast { left: 16px; right: 16px; bottom: 16px; }
}

/* Keep long words / URLs from forcing overflow on narrow screens */
p, h1, h2, h3, li, a { overflow-wrap: break-word; }

/* Disable hover-magnetic transforms on touch (handled in JS too) */
@media (hover: none) { [data-magnetic] { transform: none !important; } }