/* SaveMyPixel — base styles
   Tokens match reference/savemypixel-design-system.md */

:root {
  /* Color — light canvas */
  --canvas: oklch(0.99 0.002 250);
  --surface: #ffffff;
  --surface-muted: oklch(0.975 0.003 250);
  --ink: oklch(0.18 0.015 250);
  --ink-2: oklch(0.38 0.012 250);
  --ink-3: oklch(0.56 0.008 250);
  --hairline: oklch(0.92 0.004 250);
  --hairline-strong: oklch(0.85 0.005 250);

  --accent: oklch(0.55 0.18 250);
  --accent-hover: oklch(0.48 0.18 250);
  --accent-pressed: oklch(0.42 0.17 250);
  --accent-bg: oklch(0.96 0.02 250);
  --accent-ring: color-mix(in oklch, var(--accent) 25%, transparent);

  /* Dark interlude */
  --dark-canvas: oklch(0.18 0.015 250);
  --dark-surface: oklch(0.22 0.015 250);
  --dark-hairline: oklch(0.30 0.012 250);
  --dark-ink: oklch(0.97 0.003 250);
  --dark-ink-2: oklch(0.70 0.008 250);

  /* Status */
  --status-ok: #1f9254;
  --status-ok-bg: #e8f5ee;
  --status-warn: #b4730e;
  --status-warn-bg: #fbf1de;
  --status-error: #c0362c;
  --status-error-bg: #fbe9e7;

  /* Spacing (8px grid) */
  --s-1: 4px;
  --s-2: 8px;
  --s-3: 12px;
  --s-4: 16px;
  --s-5: 24px;
  --s-6: 32px;
  --s-7: 48px;
  --s-8: 72px;
  --s-9: 112px;
  --s-10: 160px;

  /* Radius */
  --r-1: 6px;
  --r-2: 10px;
  --r-3: 16px;
  --r-4: 24px;
  --r-pill: 999px;

  /* Type */
  --font-sans: 'Inter Tight', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  /* Container */
  --container: 1200px;
  --container-narrow: 720px;

  /* Section vertical padding */
  --section-y: var(--s-9);
}

@media (max-width: 1024px) {
  :root { --section-y: var(--s-8); }
}
@media (max-width: 768px) {
  :root { --section-y: 80px; }
}
@media (max-width: 480px) {
  :root { --section-y: 56px; }
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.55;
  color: var(--ink);
  background: var(--canvas);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "ss01", "cv11";
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
button { font: inherit; cursor: pointer; }
a { color: inherit; text-decoration: none; }
p { margin: 0; }
h1, h2, h3, h4 { margin: 0; font-weight: 500; letter-spacing: -0.02em; }
ul, ol { margin: 0; padding: 0; list-style: none; }

/* Type utilities */
.display {
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 500;
  line-height: 1.02;
  letter-spacing: -0.03em;
}
.h1 {
  font-size: clamp(32px, 4.2vw, 48px);
  font-weight: 500;
  line-height: 1.08;
  letter-spacing: -0.025em;
}
.h2 {
  font-size: clamp(24px, 2.8vw, 32px);
  font-weight: 500;
  line-height: 1.18;
  letter-spacing: -0.02em;
}
.h3 {
  font-size: 20px;
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.01em;
}
.lead {
  font-size: clamp(17px, 1.6vw, 19px);
  line-height: 1.5;
  color: var(--ink-2);
}
.small { font-size: 14px; line-height: 1.5; color: var(--ink-2); }
.ink-2 { color: var(--ink-2); }
.ink-3 { color: var(--ink-3); }
.tnum { font-variant-numeric: tabular-nums; }

.mono {
  font-family: var(--font-mono);
  font-feature-settings: "tnum";
}
.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  line-height: 1;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-3);
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
}
.eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--accent);
}
.eyebrow.no-dot::before { display: none; }

code, .code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--surface-muted);
  border: 1px solid var(--hairline);
  border-radius: var(--r-1);
  padding: 1px 6px;
}

/* Layout */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding-left: var(--s-6);
  padding-right: var(--s-6);
}
.container-narrow {
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding-left: var(--s-6);
  padding-right: var(--s-6);
}
@media (max-width: 480px) {
  .container, .container-narrow { padding-left: var(--s-5); padding-right: var(--s-5); }
}

section.section {
  padding-top: var(--section-y);
  padding-bottom: var(--section-y);
  border-top: 1px solid var(--hairline);
}
section.section:first-of-type { border-top: 0; }
section.section.dark {
  background: var(--dark-canvas);
  color: var(--dark-ink);
  border-top-color: transparent;
}
section.section.muted { background: var(--surface-muted); }

.section-head {
  display: flex;
  flex-direction: column;
  gap: var(--s-4);
  margin-bottom: var(--s-7);
  max-width: 760px;
}
.section-head .lead { margin-top: var(--s-2); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--s-2);
  height: 40px;
  padding: 0 18px;
  border-radius: var(--r-pill);
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: -0.005em;
  border: 1px solid transparent;
  background: transparent;
  color: var(--ink);
  transition: background-color 140ms ease, border-color 140ms ease, color 140ms ease;
  text-decoration: none;
  white-space: nowrap;
}
.btn:focus-visible {
  outline: 3px solid var(--accent-ring);
  outline-offset: 2px;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: var(--accent-hover); }
.btn-primary:active { background: var(--accent-pressed); }
.btn-secondary {
  border-color: var(--hairline-strong);
  background: var(--surface);
  color: var(--ink);
}
.btn-secondary:hover {
  background: var(--surface-muted);
  border-color: var(--ink-3);
}
.btn-ghost { color: var(--accent); }
.btn-ghost:hover { color: var(--accent-hover); }
.btn-lg { height: 48px; padding: 0 22px; font-size: 15px; }

.arrow-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent);
  font-weight: 500;
  font-size: 14px;
  line-height: 1;
}
.arrow-link::after {
  content: "→";
  transition: transform 140ms ease;
}
.arrow-link:hover::after { transform: translateX(2px); }

/* Cards */
.card {
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: var(--r-3);
  padding: var(--s-6);
}
.card.dark {
  background: var(--dark-surface);
  border-color: var(--dark-hairline);
  color: var(--dark-ink);
}

/* Status badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border-radius: var(--r-pill);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  line-height: 1.6;
  white-space: nowrap;
}
.badge.ok { background: var(--status-ok-bg); color: var(--status-ok); }
.badge.warn { background: var(--status-warn-bg); color: var(--status-warn); }
.badge.error { background: var(--status-error-bg); color: var(--status-error); }
.badge.neutral { background: var(--surface-muted); color: var(--ink-2); border: 1px solid var(--hairline); }
.badge.dark-neutral {
  background: rgba(255,255,255,0.06);
  color: var(--dark-ink-2);
  border: 1px solid var(--dark-hairline);
}

/* Placeholder imagery box */
.placeholder {
  position: relative;
  background-color: var(--surface-muted);
  background-image: repeating-linear-gradient(
    135deg,
    rgba(0,0,0,0.02) 0 1px,
    transparent 1px 10px
  );
  border: 1px solid var(--hairline);
  border-radius: var(--r-3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  overflow: hidden;
}
.placeholder::before {
  content: "";
  position: absolute;
  inset: 12px;
  border: 1px dashed var(--hairline-strong);
  border-radius: calc(var(--r-3) - 6px);
  pointer-events: none;
}
.placeholder > span { position: relative; padding: 0 12px; text-align: center; }
.placeholder.dark {
  background-color: rgba(255,255,255,0.03);
  background-image: repeating-linear-gradient(
    135deg,
    rgba(255,255,255,0.04) 0 1px,
    transparent 1px 10px
  );
  border-color: var(--dark-hairline);
  color: var(--dark-ink-2);
}
.placeholder.dark::before { border-color: var(--dark-hairline); }

/* Nav */
.nav {
  position: sticky;
  top: 0;
  z-index: 40;
  background: color-mix(in oklch, var(--canvas) 85%, transparent);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--hairline);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-6);
  height: 64px;
}
.brand {
  display: inline-flex;
  align-items: center;
}
.brand-logo {
  display: block;
  height: 28px;
  width: auto;
}
.footer .brand-logo { height: 30px; }
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--s-6);
  font-size: 14px;
  color: var(--ink-2);
}
.nav-links a:hover { color: var(--ink); }
.nav-actions { display: flex; align-items: center; gap: var(--s-3); }
@media (max-width: 768px) {
  .nav-links { display: none; }
}

/* Language switcher */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 6px;
}
.lang-flag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 24px;
  padding: 0;
  border: 2px solid transparent;
  border-radius: 4px;
  background: transparent;
  cursor: pointer;
  opacity: 0.45;
  transition: opacity 140ms ease, border-color 140ms ease;
}
.lang-flag:hover { opacity: 0.75; }
.lang-flag--active {
  opacity: 1;
  border-color: var(--accent);
}

/* Footer */
.footer {
  background: var(--surface-muted);
  border-top: 1px solid var(--hairline);
  padding: var(--s-9) 0 var(--s-7);
  font-size: 14px;
  color: var(--ink-2);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr repeat(4, 1fr);
  gap: var(--s-7);
}
.footer h4 {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3);
  font-weight: 500;
  margin-bottom: var(--s-4);
}
.footer ul { display: flex; flex-direction: column; gap: var(--s-2); }
.footer a:hover { color: var(--ink); }
.footer-bottom {
  margin-top: var(--s-8);
  padding-top: var(--s-5);
  border-top: 1px solid var(--hairline);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-3);
}
@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-bottom { flex-direction: column; gap: var(--s-3); align-items: flex-start; }
}
@media (max-width: 400px) {
  .footer-grid { grid-template-columns: 1fr; }
}

/* Animation helper */
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 500ms ease, transform 500ms ease;
  }
  .reveal.in {
    opacity: 1;
    transform: none;
  }
}