/* E-STIMATIC — Design system v2: tokens, components, motion.
   Pairs with Tailwind (CDN) — this file holds what utilities can't: tokens, component
   recipes, keyframes, view transitions, tooltips and reveal-on-scroll. */

:root {
  --bg: #f5f7fb;
  --surface: #ffffff;
  --surface-2: #f1f4f9;
  --ink: #0b1220;
  --ink-2: #334155;
  --muted: #64748b;
  --line: #e4e9f2;
  --line-2: #d5dce8;

  --brand-50: #eff5ff;
  --brand-100: #dbe8fe;
  --brand-200: #bfd5fe;
  --brand-400: #5b8cf7;
  --brand-500: #3b73f0;
  --brand-600: #2458e6;
  --brand-700: #1c46c4;
  --brand-800: #1b3a9c;

  --amber: #f59e0b;
  --amber-50: #fffbeb;
  --ok: #16a34a;
  --ok-50: #f0fdf4;
  --bad: #dc2626;
  --bad-50: #fef2f2;

  --navy: #0a1020;
  --navy-2: #0f1830;
  --navy-3: #16213f;
  --navy-line: rgba(148, 163, 184, .14);

  --r-xs: 8px;
  --r-sm: 10px;
  --r: 14px;
  --r-lg: 20px;
  --r-xl: 28px;

  --sh-xs: 0 1px 2px rgba(15, 23, 42, .06);
  --sh-sm: 0 1px 2px rgba(15, 23, 42, .05), 0 2px 8px -2px rgba(15, 23, 42, .06);
  --sh: 0 1px 2px rgba(15, 23, 42, .04), 0 10px 30px -10px rgba(15, 23, 42, .16);
  --sh-lg: 0 30px 70px -24px rgba(15, 23, 42, .38);
  --sh-brand: 0 10px 30px -10px rgba(36, 88, 230, .55);

  --ease: cubic-bezier(.2, .8, .2, 1);
  --ease-in: cubic-bezier(.4, 0, 1, 1);
  --spring: cubic-bezier(.34, 1.56, .64, 1);
  --t-fast: 160ms;
  --t: 260ms;
  --t-slow: 520ms;

  --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-display: 'Plus Jakarta Sans', 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SFMono-Regular', Menlo, monospace;
}

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { font-family: var(--font-sans); background: var(--bg); color: var(--ink-2); -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
h1, h2, h3, h4, .font-display { font-family: var(--font-display); color: var(--ink); letter-spacing: -.015em; }
.font-mono, code, kbd { font-family: var(--font-mono); }
::selection { background: var(--brand-200); color: var(--ink); }
:focus-visible { outline: 3px solid color-mix(in srgb, var(--brand-500) 55%, transparent); outline-offset: 2px; border-radius: 6px; }
.tabular { font-variant-numeric: tabular-nums; }

/* Scrollbars */
* { scrollbar-width: thin; scrollbar-color: #c3cbd9 transparent; }
*::-webkit-scrollbar { width: 10px; height: 10px; }
*::-webkit-scrollbar-thumb { background: #c9d1de; border-radius: 99px; border: 3px solid transparent; background-clip: content-box; }
*::-webkit-scrollbar-thumb:hover { background-color: #aab4c5; }

/* ---------- Buttons ---------- */
.btn {
  --b-bg: var(--surface); --b-fg: var(--ink); --b-bd: var(--line-2);
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  font: 600 .9rem/1 var(--font-sans); letter-spacing: -.005em;
  padding: .72rem 1.15rem; border-radius: 12px; border: 1px solid var(--b-bd);
  background: var(--b-bg); color: var(--b-fg); cursor: pointer; user-select: none; white-space: nowrap;
  transition: transform var(--t-fast) var(--ease), box-shadow var(--t) var(--ease), background var(--t) var(--ease), border-color var(--t) var(--ease), color var(--t) var(--ease), opacity var(--t);
  position: relative; overflow: hidden; text-decoration: none;
}
.btn:hover { transform: translateY(-1px); box-shadow: var(--sh-sm); border-color: #c2cbdb; }
.btn:active { transform: translateY(0) scale(.975); }
.btn[disabled], .btn.is-disabled { opacity: .45; pointer-events: none; }
.btn-primary { --b-bg: linear-gradient(180deg, #3a70f2 0%, #2458e6 100%); --b-fg: #fff; --b-bd: #1f4fd3; background: var(--b-bg); box-shadow: inset 0 1px 0 rgba(255,255,255,.22), var(--sh-xs); }
.btn-primary:hover { box-shadow: inset 0 1px 0 rgba(255,255,255,.22), var(--sh-brand); border-color: #1c46c4; }
.btn-dark { --b-bg: var(--navy-2); --b-fg: #fff; --b-bd: var(--navy-3); }
.btn-dark:hover { --b-bg: var(--navy-3); border-color: #25325a; }
.btn-amber { --b-bg: linear-gradient(180deg, #fbbf24, #f59e0b); --b-fg: #231400; --b-bd: #e08f06; background: var(--b-bg); }
.btn-amber:hover { box-shadow: 0 10px 30px -10px rgba(245,158,11,.7); }
.btn-ok { --b-bg: linear-gradient(180deg, #22c55e, #16a34a); --b-fg: #fff; --b-bd: #15803d; background: var(--b-bg); }
.btn-ghost { --b-bg: transparent; --b-bd: transparent; --b-fg: var(--ink-2); }
.btn-ghost:hover { --b-bg: var(--surface-2); box-shadow: none; }
.btn-glass { --b-bg: rgba(255,255,255,.08); --b-fg: #fff; --b-bd: rgba(255,255,255,.16); backdrop-filter: blur(8px); }
.btn-glass:hover { --b-bg: rgba(255,255,255,.14); border-color: rgba(255,255,255,.28); }
.btn-sm { padding: .5rem .8rem; font-size: .8rem; border-radius: 10px; }
.btn-lg { padding: .95rem 1.5rem; font-size: 1rem; border-radius: 14px; }
.btn-xl { padding: 1.1rem 1.9rem; font-size: 1.05rem; border-radius: 16px; }
.btn-icon { padding: .6rem; width: 2.5rem; height: 2.5rem; }
.btn .ripple { position: absolute; border-radius: 50%; transform: scale(0); background: currentColor; opacity: .18; animation: es-ripple .6s var(--ease) forwards; pointer-events: none; }

/* ---------- Surfaces ---------- */
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg); box-shadow: var(--sh-xs); }
.card-pad { padding: 1.5rem; }
.card-hover { transition: transform var(--t) var(--ease), box-shadow var(--t) var(--ease), border-color var(--t) var(--ease); }
.card-hover:hover { transform: translateY(-3px); box-shadow: var(--sh); border-color: var(--line-2); }
.panel-dark { background: var(--navy-2); color: #cbd5e1; border: 1px solid var(--navy-line); border-radius: var(--r-lg); }
.divider { height: 1px; background: var(--line); }
.glass { background: rgba(255, 255, 255, .78); backdrop-filter: saturate(1.6) blur(14px); -webkit-backdrop-filter: saturate(1.6) blur(14px); }

/* Blueprint backgrounds (construction identity) */
.bg-blueprint {
  background-color: var(--navy);
  background-image:
    radial-gradient(1200px 500px at 15% -10%, rgba(59, 115, 240, .32), transparent 60%),
    radial-gradient(900px 500px at 110% 10%, rgba(245, 158, 11, .12), transparent 55%),
    linear-gradient(rgba(148, 163, 184, .07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, .07) 1px, transparent 1px),
    linear-gradient(rgba(148, 163, 184, .035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, .035) 1px, transparent 1px);
  background-size: auto, auto, 80px 80px, 80px 80px, 16px 16px, 16px 16px;
  color: #cbd5e1;
}
.bg-grid-light {
  background-image: linear-gradient(rgba(15, 23, 42, .045) 1px, transparent 1px), linear-gradient(90deg, rgba(15, 23, 42, .045) 1px, transparent 1px);
  background-size: 28px 28px;
}
.text-gradient { background: linear-gradient(92deg, #93b4ff 0%, #ffffff 45%, #fcd34d 100%); -webkit-background-clip: text; background-clip: text; color: transparent; }
.text-gradient-brand { background: linear-gradient(92deg, #1c46c4, #3b73f0 55%, #f59e0b); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* ---------- Typography helpers ---------- */
.eyebrow { font: 700 .72rem/1 var(--font-sans); letter-spacing: .16em; text-transform: uppercase; color: var(--brand-600); }
.eyebrow-light { color: #8fb0ff; }
.lead { font-size: 1.075rem; line-height: 1.7; color: var(--muted); }

/* ---------- Chips / badges ---------- */
.chip { display: inline-flex; align-items: center; gap: .35rem; font: 600 .72rem/1 var(--font-sans); padding: .38rem .6rem; border-radius: 999px; background: var(--surface-2); color: var(--ink-2); border: 1px solid var(--line); white-space: nowrap; }
.chip-blue { background: var(--brand-50); color: var(--brand-700); border-color: var(--brand-100); }
.chip-green { background: var(--ok-50); color: #15803d; border-color: #bbf7d0; }
.chip-amber { background: var(--amber-50); color: #b45309; border-color: #fde68a; }
.chip-red { background: var(--bad-50); color: #b91c1c; border-color: #fecaca; }
.chip-dark { background: rgba(255,255,255,.08); color: #e2e8f0; border-color: rgba(255,255,255,.12); }
.kbd { font: 600 .7rem/1 var(--font-mono); padding: .25rem .4rem; border-radius: 6px; border: 1px solid var(--line-2); border-bottom-width: 2px; background: #fff; color: var(--ink-2); }

/* ---------- Forms ---------- */
.input { width: 100%; font: 500 .95rem/1.2 var(--font-sans); color: var(--ink); background: #fff; border: 1px solid var(--line-2); border-radius: 12px; padding: .75rem .9rem; transition: border-color var(--t), box-shadow var(--t); }
.input:hover { border-color: #b8c3d6; }
.input:focus { outline: none; border-color: var(--brand-500); box-shadow: 0 0 0 4px rgba(59, 115, 240, .15); }
.input-num { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
.label { display: block; font: 600 .78rem/1.2 var(--font-sans); color: var(--ink-2); margin-bottom: .4rem; }

/* ---------- Progress ---------- */
.progress { position: relative; height: 8px; border-radius: 99px; background: var(--surface-2); overflow: hidden; }
.progress > i { position: absolute; inset: 0 auto 0 0; width: 0; border-radius: inherit; background: linear-gradient(90deg, var(--brand-500), #60a5fa); transition: width .9s var(--ease); }
.progress.is-ok > i { background: linear-gradient(90deg, #16a34a, #4ade80); }
.progress.is-amber > i { background: linear-gradient(90deg, #f59e0b, #fcd34d); }
.progress-dark { background: rgba(255,255,255,.08); }
.ring { transform: rotate(-90deg); }
.ring circle { fill: none; stroke-linecap: round; transition: stroke-dashoffset 1.1s var(--ease); }

/* ---------- Header ---------- */
.site-header { position: sticky; top: 0; z-index: 60; border-bottom: 1px solid transparent; transition: border-color var(--t), box-shadow var(--t), background var(--t); }
.site-header.is-scrolled { border-bottom-color: var(--line); box-shadow: 0 8px 30px -18px rgba(15, 23, 42, .35); }
.nav-link { position: relative; display: inline-flex; align-items: center; gap: .45rem; padding: .5rem .75rem; border-radius: 10px; font: 600 .86rem/1 var(--font-sans); color: var(--ink-2); transition: color var(--t), background var(--t); }
.nav-link:hover { color: var(--ink); background: var(--surface-2); }
.nav-link.is-active { color: var(--brand-700); background: var(--brand-50); }
.logo-mark { width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center; color: #fff; background: linear-gradient(140deg, #3b73f0 0%, #1c46c4 60%, #0f2a7a 100%); box-shadow: inset 0 1px 0 rgba(255,255,255,.25), 0 6px 16px -6px rgba(36,88,230,.7); }
.avatar { width: 34px; height: 34px; border-radius: 999px; display: grid; place-items: center; font: 700 .8rem/1 var(--font-display); color: #fff; background: linear-gradient(140deg, #f59e0b, #ea580c); box-shadow: 0 0 0 2px #fff, 0 0 0 3px var(--line-2); }
.menu { position: absolute; right: 0; top: calc(100% + 10px); min-width: 250px; background: #fff; border: 1px solid var(--line); border-radius: 16px; box-shadow: var(--sh-lg); padding: .5rem; transform-origin: top right; opacity: 0; transform: translateY(-6px) scale(.97); pointer-events: none; transition: opacity var(--t) var(--ease), transform var(--t) var(--ease); z-index: 70; }
.menu.is-open { opacity: 1; transform: none; pointer-events: auto; }
.menu a, .menu button { display: flex; width: 100%; align-items: center; gap: .6rem; padding: .6rem .7rem; border-radius: 10px; font: 500 .88rem/1.2 var(--font-sans); color: var(--ink-2); }
.menu a:hover, .menu button:hover { background: var(--surface-2); color: var(--ink); }
.drawer-back { position: fixed; inset: 0; background: rgba(10, 16, 32, .5); backdrop-filter: blur(4px); opacity: 0; pointer-events: none; transition: opacity var(--t); z-index: 80; }
.drawer-back.is-open { opacity: 1; pointer-events: auto; }
.drawer { position: fixed; top: 0; right: 0; bottom: 0; width: min(86vw, 340px); background: #fff; z-index: 90; transform: translateX(104%); transition: transform var(--t-slow) var(--ease); box-shadow: var(--sh-lg); display: flex; flex-direction: column; }
.drawer.is-open { transform: none; }

/* ---------- Tooltip / popover ---------- */
.gloss { border-bottom: 1.5px dashed color-mix(in srgb, var(--brand-500) 60%, transparent); cursor: help; color: inherit; transition: background var(--t-fast), border-color var(--t-fast); border-radius: 3px; }
.gloss:hover { background: var(--brand-50); border-bottom-color: var(--brand-600); }
.pop { position: fixed; z-index: 200; max-width: 320px; background: var(--navy-2); color: #e2e8f0; border-radius: 14px; padding: .85rem 1rem; font: 400 .84rem/1.5 var(--font-sans); box-shadow: var(--sh-lg); opacity: 0; transform: translateY(6px) scale(.98); transition: opacity var(--t-fast) var(--ease), transform var(--t-fast) var(--ease); pointer-events: none; }
.pop.is-in { opacity: 1; transform: none; }
.pop b { color: #fff; font-family: var(--font-display); }
.pop .u { font: 600 .68rem/1 var(--font-mono); background: rgba(255,255,255,.1); padding: .2rem .35rem; border-radius: 5px; margin-left: .35rem; color: #93c5fd; }

/* ---------- Toasts ---------- */
.toast-wrap { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); z-index: 300; display: flex; flex-direction: column; gap: .5rem; align-items: center; pointer-events: none; width: max-content; max-width: calc(100vw - 32px); }
.toast { pointer-events: auto; display: flex; align-items: center; gap: .6rem; background: var(--navy-2); color: #fff; padding: .75rem 1rem; border-radius: 14px; font: 600 .88rem/1.3 var(--font-sans); box-shadow: var(--sh-lg); animation: es-toast-in .42s var(--spring) both; border: 1px solid rgba(255,255,255,.08); }
.toast.is-out { animation: es-toast-out .3s var(--ease-in) both; }
.toast .ti { width: 26px; height: 26px; border-radius: 8px; display: grid; place-items: center; font-size: .8rem; background: rgba(255,255,255,.1); }
.toast.ok .ti { background: #16a34a; }
.toast.bad .ti { background: #dc2626; }
.toast.xp .ti { background: linear-gradient(140deg, #fbbf24, #f59e0b); color: #231400; }

/* XP floating burst */
.xp-burst { position: fixed; z-index: 310; pointer-events: none; font: 800 1rem/1 var(--font-display); color: #b45309; background: linear-gradient(180deg, #fffbeb, #fef3c7); border: 1px solid #fde68a; padding: .45rem .7rem; border-radius: 999px; box-shadow: 0 12px 30px -12px rgba(245,158,11,.8); animation: es-xp 1.35s var(--ease) forwards; }

/* ---------- Reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s var(--ease), transform .7s var(--ease); transition-delay: var(--d, 0ms); }
.reveal.is-in { opacity: 1; transform: none; }
.reveal-left { opacity: 0; transform: translateX(-22px); transition: opacity .7s var(--ease), transform .7s var(--ease); transition-delay: var(--d, 0ms); }
.reveal-left.is-in { opacity: 1; transform: none; }
.reveal-scale { opacity: 0; transform: scale(.96); transition: opacity .7s var(--ease), transform .7s var(--ease); transition-delay: var(--d, 0ms); }
.reveal-scale.is-in { opacity: 1; transform: none; }

/* ---------- Skeleton ---------- */
.skeleton { background: linear-gradient(90deg, #eef2f7 25%, #f7f9fc 37%, #eef2f7 63%); background-size: 400% 100%; animation: es-shimmer 1.3s ease infinite; border-radius: 10px; }

/* ---------- Motion utilities ---------- */
.anim-fade-up { animation: es-fade-up .6s var(--ease) both; animation-delay: var(--d, 0ms); }
.anim-fade { animation: es-fade .5s var(--ease) both; animation-delay: var(--d, 0ms); }
.anim-scale { animation: es-scale-in .45s var(--spring) both; animation-delay: var(--d, 0ms); }
.anim-pop { animation: es-pop .45s var(--spring) both; }
.anim-shake { animation: es-shake .45s var(--ease); }
.anim-float { animation: es-float 6s ease-in-out infinite; }
.anim-pulse-ring { position: relative; }
.anim-pulse-ring::after { content: ''; position: absolute; inset: -4px; border-radius: inherit; border: 2px solid currentColor; opacity: 0; animation: es-pulse-ring 2s var(--ease) infinite; }
.draw-path { stroke-dasharray: var(--len, 1000); stroke-dashoffset: var(--len, 1000); animation: es-draw 2.2s var(--ease) forwards; animation-delay: var(--d, 0ms); }

@keyframes es-fade-up { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }
@keyframes es-fade { from { opacity: 0; } to { opacity: 1; } }
@keyframes es-scale-in { from { opacity: 0; transform: scale(.94); } to { opacity: 1; transform: none; } }
@keyframes es-pop { 0% { transform: scale(.8); opacity: 0; } 60% { transform: scale(1.06); opacity: 1; } 100% { transform: scale(1); } }
@keyframes es-shake { 0%, 100% { transform: translateX(0); } 20%, 60% { transform: translateX(-6px); } 40%, 80% { transform: translateX(6px); } }
@keyframes es-float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }
@keyframes es-pulse-ring { 0% { opacity: .6; transform: scale(1); } 100% { opacity: 0; transform: scale(1.35); } }
@keyframes es-draw { to { stroke-dashoffset: 0; } }
@keyframes es-shimmer { 0% { background-position: 100% 50%; } 100% { background-position: 0 50%; } }
@keyframes es-ripple { to { transform: scale(2.6); opacity: 0; } }
@keyframes es-toast-in { from { opacity: 0; transform: translateY(14px) scale(.96); } to { opacity: 1; transform: none; } }
@keyframes es-toast-out { to { opacity: 0; transform: translateY(8px) scale(.97); } }
@keyframes es-xp { 0% { opacity: 0; transform: translate(-50%, 0) scale(.7); } 18% { opacity: 1; transform: translate(-50%, -14px) scale(1.08); } 70% { opacity: 1; transform: translate(-50%, -46px) scale(1); } 100% { opacity: 0; transform: translate(-50%, -70px) scale(.96); } }
@keyframes es-fall { to { transform: translate3d(var(--dx, 0), 110vh, 0) rotate(var(--rot, 720deg)); opacity: .2; } }
@keyframes es-spin { to { transform: rotate(360deg); } }

/* ---------- Page (cross-document) view transitions ---------- */
@view-transition { navigation: auto; }
::view-transition-old(root) { animation: es-vt-out .22s var(--ease-in) both; }
::view-transition-new(root) { animation: es-vt-in .38s var(--ease) both; }
@keyframes es-vt-out { to { opacity: 0; transform: translateY(-6px); } }
@keyframes es-vt-in { from { opacity: 0; transform: translateY(10px); } }
.site-header { view-transition-name: site-header; }
::view-transition-old(site-header), ::view-transition-new(site-header) { animation: none; }

/* ---------- Cookie banner ---------- */
.cookie { animation: es-fade-up .5s var(--ease) both; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; scroll-behavior: auto !important; }
  .reveal, .reveal-left, .reveal-scale { opacity: 1; transform: none; }
}