/* ForceFlow — design tokens & base styles */

:root {
  /* dark (default) */
  --bg: #08090c;
  --bg-1: #0d0f14;
  --bg-2: #14171f;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.16);
  --fg: #f4f5f7;
  --fg-2: #b9bdc7;
  --fg-3: #7c8190;
  --fg-4: #4a4f5c;
  --accent: #3b82f6;
  --accent-fg: #fff;
  --accent-soft: color-mix(in oklab, var(--accent) 14%, transparent);
  --accent-soft-2: color-mix(in oklab, var(--accent) 6%, transparent);

  --font-sans: "Geist", ui-sans-serif, system-ui, -apple-system, sans-serif;
  --font-mono: var(--font-sans);

  --radius: 14px;
  --radius-sm: 8px;
  --radius-lg: 22px;

  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

:root[data-theme="light"] {
  --bg: #f6f6f3;
  --bg-1: #ffffff;
  --bg-2: #efefea;
  --line: rgba(0, 0, 0, 0.08);
  --line-strong: rgba(0, 0, 0, 0.16);
  --fg: #0c0d10;
  --fg-2: #353841;
  --fg-3: #5f6473;
  --fg-4: #9499a5;
  --accent-fg: #fff;
  --accent-soft: color-mix(in oklab, var(--accent) 14%, transparent);
  --accent-soft-2: color-mix(in oklab, var(--accent) 6%, transparent);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-feature-settings: "ss01", "ss02", "cv11";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; }

::selection { background: var(--accent); color: var(--accent-fg); }

/* Thin accent-colored scrollbar (page-level) */
html {
  scrollbar-width: thin;
  scrollbar-color: var(--accent) transparent;
}
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--accent);
  border-radius: 999px;
  border: 2px solid transparent;
  background-clip: padding-box;
}
::-webkit-scrollbar-thumb:hover {
  background: color-mix(in oklab, var(--accent) 80%, white);
  background-clip: padding-box;
  border: 2px solid transparent;
}

/* ─────────── Layout ─────────── */

.wrap {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px;
}

.section {
  position: relative;
  padding: 120px 0;
}

/* ─────────── Blocked region page ─────────── */
.blocked-root {
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto 1fr auto;
  position: relative;
  isolation: isolate;
  overflow: hidden;
}
.blocked-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
}
.blocked-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse 70% 50% at 50% 50%, black 30%, transparent 90%);
  -webkit-mask-image: radial-gradient(ellipse 70% 50% at 50% 50%, black 30%, transparent 90%);
  opacity: .55;
}
.blocked-glow {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 36% 28% at 50% 50%, color-mix(in oklab, var(--accent) 14%, transparent), transparent 70%),
    linear-gradient(180deg, transparent 0%, var(--bg) 100%);
}
.blocked-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px clamp(20px, 4vw, 56px);
}
.blocked-stage {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px clamp(20px, 5vw, 56px) 60px;
  max-width: 720px;
  margin: 0 auto;
}
.blocked-icon {
  display: grid;
  place-items: center;
  margin-bottom: 28px;
  color: var(--accent);
}
.blocked-icon svg {
  width: 64px;
  height: 64px;
  display: block;
  filter: drop-shadow(0 8px 24px color-mix(in oklab, var(--accent) 35%, transparent));
}
.blocked-eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}
.blocked-title {
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.1;
  margin: 0 0 16px;
  color: var(--fg);
  text-wrap: balance;
}
.blocked-desc {
  font-size: clamp(14px, 1.1vw, 16px);
  line-height: 1.6;
  color: var(--fg-2);
  margin: 0 0 28px;
  max-width: 540px;
}
/* Region — inline flag + name, no chrome */
.blocked-region {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 36px;
}
.blocked-region-flag {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: block;
  flex-shrink: 0;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.1);
}
.blocked-region-text {
  display: flex;
  align-items: baseline;
  gap: 8px;
}
.blocked-region-name {
  font-family: var(--font-sans);
  font-size: 13.5px;
  font-weight: 500;
  letter-spacing: -0.005em;
  color: var(--fg-2);
}
.blocked-region-meta {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-4);
}
.blocked-region-sep { color: var(--fg-4); opacity: .6; }
.blocked-region-code {
  color: var(--accent);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}
.blocked-actions {
  display: flex;
  gap: 12px;
}
.blocked-foot {
  padding: 24px clamp(20px, 4vw, 56px);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--fg-4);
  text-align: center;
}

.section-head {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 18px;
  margin-bottom: 56px;
}
.section-head > div:first-child {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.section-head h2 {
  font-size: clamp(40px, 5.4vw, 76px);
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.02;
  margin: 0;
  max-width: 1100px;
  text-wrap: balance;
}
/* ─────────── Section eyebrow — accent label ─────────── */
.eyebrow {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 18px;
  line-height: 1;
  max-width: 100%;
}
.eyebrow-label {
  color: var(--accent);
  opacity: 0;
  transform: translateY(2px);
  transition: opacity 380ms var(--ease), transform 420ms var(--ease);
}
.eyebrow.is-in .eyebrow-label {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .eyebrow .eyebrow-label {
    transition: none;
    opacity: 1;
    transform: none;
  }
}

/* ─────────── Header ─────────── */

.header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  padding: 0;
  background: color-mix(in oklab, var(--bg) 70%, transparent);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  border-bottom: 1px solid transparent;
  transition: border-color 200ms var(--ease), background 200ms var(--ease);
}
.header.scrolled { border-bottom-color: var(--line); }

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 14px 32px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 32px;
}

.logo {
  display: inline-flex;
  align-items: center;
  color: var(--fg-1);
}
.logo .brand-logo { display: block; }
.brand-logo { color: var(--fg-1); }

.nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
}
.nav a {
  font-size: 13.5px;
  color: var(--fg-2);
  transition: color 200ms var(--ease);
  white-space: nowrap;
}
.nav a:hover { color: var(--fg); }
.nav-cluster {
  display: flex;
  align-items: center;
  gap: 14px;
}

/* ─────────── Language switch ─────────── */
.lang-switch {
  display: inline-flex;
  align-items: center;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: color-mix(in oklab, var(--bg-1) 60%, transparent);
}
.lang-btn {
  appearance: none;
  background: transparent;
  border: 0;
  color: var(--fg-3);
  font: inherit;
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.04em;
  padding: 5px 10px;
  border-radius: 999px;
  cursor: pointer;
  transition: background 180ms var(--ease), color 180ms var(--ease);
  line-height: 1;
  min-width: 30px;
}
.lang-btn:hover { color: var(--fg); }
.lang-btn.on {
  background: var(--fg);
  color: var(--bg);
}
.mobile-lang {
  align-self: flex-start;
  margin-bottom: 8px;
}

/* ─────────── Buttons ─────────── */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 16px;
  border-radius: 9px;
  font-size: 13.5px;
  font-weight: 500;
  letter-spacing: -0.005em;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 220ms var(--ease-out),
    background-color 220ms var(--ease), color 220ms var(--ease),
    border-color 220ms var(--ease), box-shadow 220ms var(--ease);
  white-space: nowrap;
  background: transparent;
  color: inherit;
}
.btn-primary {
  background: var(--accent);
  color: var(--accent-fg);
  box-shadow:
    inset 0 1px 0 color-mix(in oklab, #ffffff 18%, transparent),
    0 1px 0 color-mix(in oklab, #000000 30%, transparent),
    0 6px 18px -10px color-mix(in oklab, var(--accent) 70%, transparent);
}
.btn-primary:hover {
  transform: translateY(-1px);
  background: color-mix(in oklab, var(--accent) 92%, #ffffff);
  box-shadow:
    inset 0 1px 0 color-mix(in oklab, #ffffff 22%, transparent),
    0 10px 24px -10px color-mix(in oklab, var(--accent) 80%, transparent),
    0 0 0 4px var(--accent-soft-2);
}
.btn-ghost {
  border-color: var(--line-strong);
  color: var(--fg);
  background: color-mix(in oklab, var(--bg-1) 55%, transparent);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
.btn-ghost:hover {
  background: var(--bg-2);
  border-color: var(--fg-4);
}
.btn-sm { padding: 8px 12px; font-size: 12.5px; border-radius: 7px; }
.btn-lg { padding: 13px 20px; font-size: 14.5px; border-radius: 10px; }

.btn .arrow {
  display: inline-block;
  transition: transform 250ms var(--ease-out);
}
.btn:hover .arrow { transform: translateX(3px); }

/* ─────────── Cards & generic ─────────── */

.card {
  background: var(--bg-1);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  position: relative;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--fg-3);
  padding: 4px 8px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--bg);
}

/* ─────────── Reveal-on-scroll ─────────── */

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 800ms var(--ease-out), transform 800ms var(--ease-out);
  will-change: opacity, transform;
}
.reveal.in {
  opacity: 1;
  transform: translateY(0);
}
.reveal.delay-1 { transition-delay: 80ms; }
.reveal.delay-2 { transition-delay: 160ms; }
.reveal.delay-3 { transition-delay: 240ms; }
.reveal.delay-4 { transition-delay: 320ms; }
.reveal.delay-5 { transition-delay: 400ms; }
.reveal.delay-6 { transition-delay: 480ms; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  *,
  *::before,
  *::after { animation: none !important; transition-duration: 1ms !important; }
}

/* ─────────── Loader ─────────── */

.loader {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: var(--bg);
  display: grid;
  place-items: center;
  pointer-events: none;
  opacity: 1;
  transition: opacity 600ms var(--ease);
}
.loader.hidden { opacity: 0; pointer-events: none; }
.loader-mark {
  width: 36px; height: 36px;
  animation: pulse 1.4s var(--ease) infinite;
}
@keyframes pulse {
  0%, 100% { opacity: .55; transform: scale(.96) }
  50%      { opacity: 1;    transform: scale(1)   }
}

/* ─────────── Responsive ─────────── */

@media (max-width: 768px) {
  .wrap { padding: 0 20px; }
  .section { padding: 80px 0; }
  .section-head { gap: 14px; margin-bottom: 40px; }
  .header { padding: 12px 20px; }
  .nav { display: none; }
}