/* Treinando.org — CSS puro + design tokens (sem Tailwind) */

:root {
  color-scheme: light dark;

  --bg: #f3f0e8;
  --bg-elevated: #fffcf6;
  --bg-muted: #e7e2d6;
  --bg-panel: #ebe6db;
  --text: #14171c;
  --text-muted: #5a616c;
  --border: #d5cfc2;
  --border-strong: #b8b1a2;
  --accent: #0c6b4d;
  --accent-strong: #085239;
  --accent-soft: #d3efe4;
  --accent-glow: color-mix(in srgb, var(--accent) 18%, transparent);
  --on-accent: #ffffff;
  --warm: #c45c26;
  --warm-soft: #f3e0d4;
  --danger: #9b2c2c;
  --shadow: 0 1px 0 rgba(20, 23, 28, 0.04), 0 12px 32px rgba(20, 23, 28, 0.06);
  --shadow-sm: 0 1px 0 rgba(20, 23, 28, 0.05);

  --radius: 6px;
  --radius-sm: 4px;
  --header-h: 3.55rem;
  --touch: 2.75rem;
  --shell: 1120px;

  --space-2xs: 0.25rem;
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 2.75rem;
  --space-section: clamp(1.6rem, 3.5vw, 2.5rem);

  --font: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", sans-serif;
  --mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --leading: 1.6;
  --tracking-tight: -0.02em;

  --focus-ring: 0 0 0 2px var(--bg), 0 0 0 4px var(--accent);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --duration: 180ms;

  --safe-top: env(safe-area-inset-top, 0px);
  --safe-right: env(safe-area-inset-right, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --safe-left: env(safe-area-inset-left, 0px);

  --hero-glow: radial-gradient(90% 80% at 100% 0%, var(--accent-glow), transparent 55%),
    radial-gradient(60% 50% at 0% 20%, color-mix(in srgb, var(--warm) 12%, transparent), transparent 50%);
}

html[data-theme="dark"] {
  --bg: #10131a;
  --bg-elevated: #171b24;
  --bg-muted: #1e2430;
  --bg-panel: #1a1f2a;
  --text: #eef1f6;
  --text-muted: #9aa3b2;
  --border: #2c3444;
  --border-strong: #3d475a;
  --accent: #3ecf9a;
  --accent-strong: #6ee0b4;
  --accent-soft: #163529;
  --accent-glow: color-mix(in srgb, var(--accent) 22%, transparent);
  --on-accent: #0a1210;
  --warm: #e08a4f;
  --warm-soft: #2e2218;
  --shadow: 0 1px 0 rgba(0, 0, 0, 0.35), 0 16px 40px rgba(0, 0, 0, 0.28);
  --shadow-sm: 0 1px 0 rgba(0, 0, 0, 0.3);
  --focus-ring: 0 0 0 2px var(--bg), 0 0 0 4px var(--accent);
  --hero-glow: radial-gradient(90% 80% at 100% 0%, var(--accent-glow), transparent 55%);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: clip;
  max-width: 100%;
}

body {
  margin: 0;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-height: 100dvh;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: var(--leading);
  max-width: 100%;
  overflow-x: clip;
  padding-left: var(--safe-left);
  padding-right: var(--safe-right);
  -webkit-font-smoothing: antialiased;
}

::selection {
  background: color-mix(in srgb, var(--accent) 32%, transparent);
  color: var(--text);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--accent-strong);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.16em;
}

a:hover {
  color: var(--accent);
}

:focus {
  outline: none;
}

:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: var(--radius-sm);
}

input:focus-visible,
textarea:focus-visible,
select:focus-visible,
button:focus-visible {
  border-color: var(--accent);
  box-shadow: var(--focus-ring);
}

.skip-link {
  position: absolute;
  left: max(0.75rem, var(--safe-left));
  top: -3.5rem;
  z-index: 100;
  background: var(--accent);
  color: var(--on-accent);
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius);
  font-weight: 600;
}

.skip-link:focus,
.skip-link:focus-visible {
  top: max(0.75rem, var(--safe-top));
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* —— Shell / layout —— */
.shell {
  width: min(100% - 2rem, var(--shell));
  margin-inline: auto;
}

.main {
  flex: 1;
  padding-block: var(--space-lg) var(--space-2xl);
}

/* —— Header: scroll horizontal no bloco inteiro —— */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg-elevated) 92%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  padding-top: var(--safe-top);
}

.header-scroll {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  min-height: var(--header-h);
  padding: 0.55rem 1rem;
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  white-space: nowrap;
}

.header-scroll::-webkit-scrollbar {
  height: 4px;
}

.header-scroll::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 99px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  flex: 0 0 auto;
  color: var(--text);
  text-decoration: none;
  font-weight: 750;
  letter-spacing: var(--tracking-tight);
}

.brand:hover {
  color: var(--text);
}

.brand-mark {
  width: 1.55rem;
  height: 1.55rem;
  border-radius: 5px;
  background:
    linear-gradient(145deg, var(--accent) 0%, color-mix(in srgb, var(--accent) 60%, var(--warm)) 100%);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, #000 12%, transparent);
}

.brand-text {
  font-size: 1.05rem;
}

.nav {
  display: inline-flex;
  align-items: center;
  gap: 0.2rem;
  flex: 0 0 auto;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  min-height: 2.35rem;
  padding: 0.35rem 0.7rem;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 550;
  transition: background var(--duration) var(--ease), color var(--duration) var(--ease);
}

.nav-link:hover,
.nav-link.is-active {
  color: var(--text);
  background: var(--bg-muted);
}

.nav-link.is-active {
  box-shadow: inset 0 -2px 0 var(--accent);
}

.header-tools {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-left: auto;
  flex: 0 0 auto;
}

.header-search {
  display: inline-flex;
  align-items: center;
  min-height: 2.35rem;
  padding: 0.3rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg);
  color: var(--text);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 600;
}

.header-search:hover {
  border-color: var(--accent);
  color: var(--accent-strong);
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.35rem;
  height: 2.35rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg);
  color: var(--text);
  cursor: pointer;
}

html[data-theme="light"] .theme-icon-dark,
html[data-theme="dark"] .theme-icon-light {
  display: none;
}

/* —— Typography / hero —— */
.hero {
  padding: var(--space-xl) var(--space-lg);
  margin-bottom: var(--space-section);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 2px);
  background: var(--bg-elevated) var(--hero-glow);
  background-repeat: no-repeat;
  box-shadow: var(--shadow-sm);
}

.hero-compact {
  padding: var(--space-lg);
}

.eyebrow {
  margin: 0 0 var(--space-xs);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-strong);
}

.hero h1,
.entity-header h1 {
  margin: 0 0 var(--space-sm);
  font-size: clamp(1.65rem, 3.4vw, 2.35rem);
  line-height: 1.15;
  letter-spacing: var(--tracking-tight);
  font-weight: 780;
}

.lead {
  margin: 0 0 var(--space-md);
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.55;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: var(--space-md) 0 0;
}

/* —— Buttons —— */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--touch);
  padding: 0.55rem 1.1rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  font: inherit;
  font-weight: 650;
  font-size: 0.95rem;
  text-decoration: none;
  cursor: pointer;
  transition: transform var(--duration) var(--ease), background var(--duration) var(--ease),
    border-color var(--duration) var(--ease);
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background: var(--accent);
  color: var(--on-accent);
  border-color: color-mix(in srgb, var(--accent) 80%, #000);
}

.btn-primary:hover {
  background: var(--accent-strong);
  color: var(--on-accent);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border-strong);
}

.btn-ghost:hover {
  background: var(--bg-muted);
  color: var(--text);
}

/* —— Search —— */
.search-panel {
  margin-top: var(--space-md);
}

.search-label {
  display: block;
  margin-bottom: 0.35rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
}

.search-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.search-row input[type="search"] {
  flex: 1 1 16rem;
  min-height: var(--touch);
  padding: 0.55rem 0.9rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  background: var(--bg);
  color: var(--text);
  font: inherit;
}

/* —— Sections / grids —— */
.section {
  margin-bottom: var(--space-section);
}

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem 1rem;
  margin-bottom: var(--space-md);
}

.section-head h2,
.entity-page h2,
.panel h2,
.calc-result h2 {
  margin: 0;
  font-size: 1.25rem;
  letter-spacing: var(--tracking-tight);
  line-height: 1.25;
}

.section-head p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.grid {
  display: grid;
  gap: var(--space-md);
}

.cards-2 {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 18rem), 1fr));
}

.cards-3 {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 16rem), 1fr));
}

.cards-4 {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 14rem), 1fr));
}

/* —— Cards —— */
.card {
  display: block;
  padding: var(--space-md);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elevated);
  box-shadow: var(--shadow-sm);
  color: inherit;
  text-decoration: none;
  transition: border-color var(--duration) var(--ease), transform var(--duration) var(--ease),
    box-shadow var(--duration) var(--ease);
}

a.card:hover,
.hub-card:hover {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  color: inherit;
}

.hub-card h3,
.card-title {
  margin: 0 0 0.45rem;
  font-size: 1.05rem;
  letter-spacing: var(--tracking-tight);
  line-height: 1.3;
}

.card-title a {
  color: inherit;
  text-decoration: none;
}

.card-title a:hover {
  color: var(--accent-strong);
}

.card-text,
.hub-card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 0.55rem;
}

.card-link {
  margin: 0.85rem 0 0;
  font-size: 0.9rem;
  font-weight: 650;
}

.entity-card {
  display: flex;
  flex-direction: column;
}

/* —— Chips —— */
.chip,
.chip-row .chip {
  display: inline-flex;
  align-items: center;
  min-height: 1.65rem;
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg-muted);
  color: var(--text);
  font-size: 0.78rem;
  font-weight: 650;
  text-decoration: none;
  white-space: nowrap;
}

.chip-muted {
  color: var(--text-muted);
  font-weight: 550;
}

.chip-soft {
  background: var(--accent-soft);
  border-color: color-mix(in srgb, var(--accent) 25%, var(--border));
  color: var(--accent-strong);
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

/* —— Panel / breadcrumb / prose —— */
.panel {
  padding: var(--space-lg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-panel);
}

.breadcrumbs {
  margin-bottom: var(--space-md);
  font-size: 0.88rem;
  color: var(--text-muted);
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 0.4rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.breadcrumbs li:not(:last-child)::after {
  content: "/";
  margin-left: 0.4rem;
  opacity: 0.55;
}

.breadcrumbs a {
  color: var(--text-muted);
  text-decoration: none;
}

.breadcrumbs a:hover {
  color: var(--accent-strong);
}

.prose {
  font-size: 1.02rem;
}

.prose > :first-child {
  margin-top: 0;
}

.prose h2 {
  margin: 1.6rem 0 0.65rem;
  font-size: 1.28rem;
  letter-spacing: var(--tracking-tight);
}

.prose h3 {
  margin: 1.25rem 0 0.5rem;
  font-size: 1.08rem;
}

.prose p,
.prose ul,
.prose ol {
  margin: 0 0 0.95rem;
}

.prose li {
  margin-bottom: 0.35rem;
}

.prose a {
  font-weight: 600;
}

/* —— Tables —— */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elevated);
  -webkit-overflow-scrolling: touch;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.spec-table th,
.spec-table td {
  padding: 0.7rem 0.9rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

.spec-table th {
  font-weight: 650;
  color: var(--text-muted);
  white-space: nowrap;
}

.spec-table tr:last-child th,
.spec-table tr:last-child td {
  border-bottom: 0;
}

.spec-table thead th {
  background: var(--bg-muted);
  color: var(--text);
}

.compare-table th:first-child,
.compare-table td:first-child {
  position: sticky;
  left: 0;
  background: var(--bg-elevated);
  z-index: 1;
}

/* —— Entity / stats —— */
.entity-page .entity-header {
  margin-bottom: var(--space-lg);
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 12rem), 1fr));
  gap: 0.75rem;
  margin-top: var(--space-md);
}

.stat {
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elevated);
}

.stat-label {
  display: block;
  margin-bottom: 0.25rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.stat-value {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: var(--tracking-tight);
}

.calc-result .stat-value {
  font-size: 1.75rem;
  margin: 0.35rem 0;
}

.link-list {
  margin: 0;
  padding-left: 1.15rem;
}

.link-list li {
  margin-bottom: 0.45rem;
}

.empty-note,
.text-muted {
  color: var(--text-muted);
}

.empty-note {
  margin: 0;
  padding: var(--space-md);
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--bg-muted) 60%, transparent);
}

/* —— Forms —— */
.field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.field-label {
  font-size: 0.88rem;
  font-weight: 650;
  color: var(--text-muted);
}

.field input,
.field select,
.calc-form input,
.calc-form select,
.compare-form select {
  min-height: var(--touch);
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  background: var(--bg-elevated);
  color: var(--text);
  font: inherit;
}

.calc-result {
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px solid var(--border);
}

.calc-result[hidden] {
  display: none;
}

/* —— FAQ —— */
.faq details {
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--border);
}

.faq summary {
  cursor: pointer;
  font-weight: 700;
  list-style: none;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq details p {
  margin: 0.55rem 0 0;
  color: var(--text-muted);
}

/* —— Footer —— */
.site-footer {
  margin-top: auto;
  border-top: 1px solid var(--border);
  background: var(--bg-elevated);
  padding: var(--space-xl) 0 var(--space-lg);
  padding-bottom: calc(var(--space-lg) + var(--safe-bottom));
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 11rem), 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.footer-title {
  margin: 0 0 0.4rem;
  font-weight: 750;
  letter-spacing: var(--tracking-tight);
}

.footer-text {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.92rem;
}

.footer-heading {
  margin: 0 0 0.55rem;
  font-size: 0.8rem;
  font-weight: 750;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.footer-links {
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-links a {
  display: inline-block;
  padding: 0.22rem 0;
  color: var(--text);
  text-decoration: none;
  font-size: 0.92rem;
}

.footer-links a:hover {
  color: var(--accent-strong);
}

.footer-bottom {
  padding-top: var(--space-md);
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.85rem;
}

.footer-bottom p {
  margin: 0;
}

/* —— Small polish —— */
code {
  font-family: var(--mono);
  font-size: 0.9em;
  padding: 0.1em 0.35em;
  border-radius: 3px;
  background: var(--bg-muted);
}

@media (max-width: 640px) {
  .hero {
    padding: var(--space-md);
  }

  .main {
    padding-top: var(--space-md);
  }

  .btn {
    width: 100%;
  }

  .hero-actions .btn {
    width: auto;
    flex: 1 1 auto;
  }

  .search-row .btn {
    width: 100%;
  }
}