/* 
   Evolution API Assistant — Hosted Server Stylesheet
   Design: Neutral-first palette; a teal accent is carried only by actions, links and selected states.
   The dark scheme is a derived palette of the same accent.
   Responsive: 320px to wide desktop.
   Modes: Light and Dark.
*/

/* 
   Design Tokens 
   Using CSS variables for a strict palette and scale — no magic numbers.
*/
:root {
  /* Light Mode Palette */
  --bg-page: #f8f9fa;
  --bg-surface: #ffffff;
  --bg-surface-hover: #e9ecef;
  --bg-surface-selected: #e8f3f1;
  
  --ink-primary: #212529;
  --ink-secondary: #495057;
  --ink-tertiary: #5c636a;
  
  --border-subtle: #dee2e6;
  --border-strong: #8F8F8F;
  --border-selected: #0b6e63;
  
  --accent-bg: #0b6e63;
  --accent-ink: #ffffff;
  --accent-hover: #095a51;
  
  --link: #0b6e63;
  --focus-ring: #0b5ed7;
  
  --error-bg: #f8d7da;
  --error-ink: #842029;
  --error-border: #dc3545;
  
  --busy-ring-size: 1em;
  --busy-ring-width: 2px;
  
  /* Typography Scale */
  --font-sans: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  
  /* Spacing & Layout */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  
  --measure: 42rem;
}

/* Dark Mode Overrides */
@media (prefers-color-scheme: dark) {
  :root {
    --bg-page: #212529;
    --bg-surface: #2b3035;
    --bg-surface-hover: #343a40;
    --bg-surface-selected: #1f3532;
    
    --ink-primary: #f8f9fa;
    --ink-secondary: #ced4da;
    --ink-tertiary: #adb5bd;
    
    --border-subtle: #495057;
    --border-strong: #868e96;
    --border-selected: #5fc4b6;
    
    --accent-bg: #5fc4b6;
    --accent-ink: #212529;
    --accent-hover: #7ad0c4;
    
    --link: #5fc4b6;
    --focus-ring: #6ea8fe;
    
    --error-bg: #3a1a1e;
    --error-ink: #f1aeb5;
    --error-border: #842029;
  }
}

/* 
   Reset & Base 
*/
*, *::before, *::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--bg-page);
  color: var(--ink-primary);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* 
   Typography 
*/
h1, h2, h3, h4 {
  color: var(--ink-primary);
  margin-top: 0;
  margin-bottom: var(--space-4);
  font-weight: 600;
  line-height: 1.2;
  text-wrap: balance;
}

h1 {
  font-size: var(--text-2xl);
  letter-spacing: -0.02em;
}

h2 {
  font-size: var(--text-xl);
  margin-top: var(--space-8);
  letter-spacing: -0.01em;
}

h3 {
  font-size: var(--text-lg);
  margin-top: var(--space-6);
}

p {
  margin-top: 0;
  margin-bottom: var(--space-4);
}

a {
  color: var(--link);
  text-decoration: underline;
  text-decoration-color: var(--border-strong);
  text-underline-offset: 2px;
  transition: text-decoration-color 0.2s;
}

a:hover {
  text-decoration-color: var(--link);
}

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background-color: var(--bg-surface);
  padding: 0.1em 0.3em;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  word-break: break-word;
}

/* 
   Layout 
*/
.header-inner,
.page,
.footer-inner {
  max-width: var(--measure);
  margin: 0 auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

@media (min-width: 640px) {
  .header-inner,
  .page,
  .footer-inner {
    padding-left: var(--space-8);
    padding-right: var(--space-8);
  }
}

/* 
   Header & Navigation 
*/
.site-header {
  border-bottom: 1px solid var(--border-subtle);
  background-color: var(--bg-surface);
  padding-top: var(--space-3);
  padding-bottom: var(--space-3);
}

.header-inner {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 600;
  text-decoration: none;
  color: var(--ink-primary);
}

.brand img {
  border-radius: var(--radius-sm);
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  font-size: var(--text-sm);
}

.site-nav a {
  color: var(--ink-secondary);
  text-decoration: none;
  font-weight: 500;
}

.site-nav a:hover {
  color: var(--ink-primary);
}

.site-nav a[aria-current="page"] {
  color: var(--ink-primary);
  text-decoration: underline;
  text-decoration-color: var(--link);
}

/* 
   Main Content 
*/
.page {
  padding-top: var(--space-8);
  padding-bottom: var(--space-12);
}

.lead {
  font-size: var(--text-lg);
  color: var(--ink-secondary);
  margin-bottom: var(--space-8);
  line-height: 1.5;
  text-wrap: balance;
}

/* 
   Consent Form & Facts 
*/
.facts {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  margin-bottom: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.facts div {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

@media (min-width: 480px) {
  .facts div {
    flex-direction: row;
    align-items: baseline;
    gap: var(--space-4);
  }
  .facts dt {
    flex: 0 0 140px;
  }
}

.facts dt {
  font-size: var(--text-sm);
  color: var(--ink-secondary);
  font-weight: 500;
  margin: 0;
}

.facts dd {
  margin: 0;
  font-weight: 500;
  word-break: break-word;
}

.facts dd code {
  background: transparent;
  border: none;
  padding: 0;
  font-size: var(--text-sm);
  color: var(--ink-primary);
  /* Break long URIs so they do not force horizontal scroll */
  word-break: break-all;
}

/* 
   Forms 
*/
.consent-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.field {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

label {
  font-weight: 600;
  font-size: var(--text-sm);
  color: var(--ink-primary);
}

.optional {
  font-weight: 400;
  color: var(--ink-tertiary);
  font-size: var(--text-xs);
  margin-left: var(--space-2);
}

input[type="text"],
input[type="url"],
input[type="password"] {
  width: 100%;
  padding: 0.625rem 0.75rem;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  color: var(--ink-primary);
  background-color: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  appearance: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

input[type="text"]:focus-visible,
input[type="url"]:focus-visible,
input[type="password"]:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 2px;
  border-color: var(--border-selected);
}

/* The browser default grey measured 2.89:1 on the dark surface, and a placeholder is text a user reads. */
input::placeholder {
  color: var(--ink-tertiary);
  opacity: 1;            /* Firefox dims placeholders by default */
}

.field-help {
  font-size: var(--text-sm);
  color: var(--ink-secondary);
}

/* 
   Policy Selection (Radio Cards) 
*/
.policy {
  margin: 0;
  padding: 0;
  border: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.policy legend {
  font-weight: 600;
  font-size: var(--text-sm);
  color: var(--ink-primary);
  margin-bottom: var(--space-3);
  padding: 0;
}

.policy-option {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4);
  background-color: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: border-color 0.2s, background-color 0.2s;
}

.policy-option:hover {
  background-color: var(--bg-surface-hover);
}

.policy-option:has(input:checked) {
  border-color: var(--border-selected);
  background-color: var(--bg-surface-selected);
}

.policy-option input[type="radio"],
.policy-option input[type="checkbox"] {
  margin-top: 0.25rem;
  width: 1rem;
  height: 1rem;
  accent-color: var(--border-selected);
}

.policy-option input[type="radio"]:focus-visible,
.policy-option input[type="checkbox"]:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 2px;
}

.policy-option span {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.policy-option strong {
  font-weight: 600;
  color: var(--ink-primary);
}

.policy-detail {
  font-size: var(--text-sm);
  color: var(--ink-secondary);
  font-weight: 400;
}

.policy-note {
  font-size: var(--text-sm);
  color: var(--ink-tertiary);
  margin-top: var(--space-2);
}

/* 
   Details / Help 
*/
details.help {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
}

details.help summary {
  font-weight: 600;
  font-size: var(--text-sm);
  cursor: pointer;
  color: var(--ink-primary);
}

details.help summary:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

details.help p {
  margin-top: var(--space-3);
  font-size: var(--text-sm);
  color: var(--ink-secondary);
}

.versions {
  margin: 0;
  padding-left: var(--space-4);
  font-size: var(--text-sm);
  color: var(--ink-secondary);
}

.versions li {
  margin-bottom: var(--space-1);
}

.versions em {
  color: var(--ink-tertiary);
  font-style: normal;
}

/* 
   Assurance Section 
*/
.assurance {
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid var(--border-subtle);
}

.assurance h2 {
  font-size: var(--text-base);
  margin-bottom: var(--space-3);
}

.assurance ul {
  margin: 0;
  padding-left: var(--space-4);
  font-size: var(--text-sm);
  color: var(--ink-secondary);
}

.assurance li {
  margin-bottom: var(--space-2);
}

/* 
   Actions (Buttons) 
*/
.actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

@media (min-width: 480px) {
  .actions {
    flex-direction: row;
    align-items: center;
  }
}

button {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: 600;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  text-align: center;
  transition: background-color 0.2s, border-color 0.2s, color 0.2s;
  border: 1px solid transparent;
}

button:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 2px;
}

button.primary {
  background-color: var(--accent-bg);
  color: var(--accent-ink);
  flex: 1;
}

button.primary:hover {
  background-color: var(--accent-hover);
}

button.secondary {
  background-color: transparent;
  color: var(--ink-secondary);
  border-color: var(--border-strong);
}

button.secondary:hover {
  background-color: var(--bg-surface-hover);
  color: var(--ink-primary);
}

/*
   Sending state
   Set by the one inline script when the form is submitted. The wait is a
   real connection to someone's Evolution server, so the page has to say so: the pressed
   button spins, the note appears, and nothing else is clickable until the
   answer arrives.
*/
.is-sending button {
  pointer-events: none;
}

.is-sending button:not(.is-busy) {
  opacity: 0.6;
}

button.is-busy::after {
  content: "";
  display: inline-block;
  width: var(--busy-ring-size);
  height: var(--busy-ring-size);
  margin-left: 0.6em;
  vertical-align: -0.1em;
  border: var(--busy-ring-width) solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* The note carries the message on its own, so a reader who has asked for
   reduced motion loses only the spin, not the information. */
.sending-note {
  display: none;
  margin-top: var(--space-3);
  font-size: var(--text-sm);
  color: var(--ink-secondary);
}

/* The sentence promises a live check of the user's Evolution server, and the refusal path never makes one. */
.is-sending:has(button.primary.is-busy) .sending-note {
  display: block;
}

/* 
   Alerts / Errors 
*/
.error {
  background-color: var(--error-bg);
  color: var(--error-ink);
  border: 1px solid var(--error-border);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-weight: 500;
  font-size: var(--text-sm);
  margin-bottom: var(--space-6);
}

/* 
   Documentation Pages (.doc) 
*/
.doc h2 {
  margin-top: var(--space-8);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--border-subtle);
}

.doc h3 {
  margin-top: var(--space-6);
}

.doc ul, .doc ol {
  padding-left: var(--space-6);
  margin-bottom: var(--space-4);
}

.doc li {
  margin-bottom: var(--space-2);
}

/* Tables scroll inside their own wrapper — the page never scrolls sideways
   because of a wide legal table. The wrapper is emitted by the markdown
   renderer; a bare table could not be both readable-wide and self-scrolling. */
.table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin-bottom: var(--space-6);
}

.table-wrap table {
  width: 100%;
  border-collapse: collapse;
}

/* Under 640px the table keeps a readable minimum width and scrolls within
   the wrapper, rather than squeezing three columns of legal text into a
   phone screen (measured: cells wrapped to a few characters per line). */
@media (max-width: 639px) {
  .table-wrap table {
    min-width: 40rem;
  }
}

.doc th, .doc td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--border-subtle);
  text-align: left;
  vertical-align: top;
}

.doc th {
  font-weight: 600;
  background-color: var(--bg-surface);
  color: var(--ink-primary);
}

/* 
   Landing Page Specifics 
*/
.endpoint {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-8);
}

.endpoint-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--ink-secondary);
  margin-bottom: var(--space-2);
}

.endpoint code {
  display: block;
  font-size: var(--text-lg);
  padding: 0;
  border: none;
  background: transparent;
  color: var(--ink-primary);
  word-break: break-all;
}

.cards {
  display: grid;
  gap: var(--space-4);
  grid-template-columns: 1fr;
  margin-top: var(--space-8);
}

@media (min-width: 640px) {
  .cards {
    grid-template-columns: repeat(2, 1fr);
  }
  /* Make the last card span both columns if it is the odd one out */
  .card:last-child:nth-child(odd) {
    grid-column: 1 / -1;
  }
}

.card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-6);
}

.card h3 {
  margin-top: 0;
  font-size: var(--text-lg);
}

.card p:last-child {
  margin-bottom: 0;
}

/* 
   Footer 
*/
.site-footer {
  border-top: 1px solid var(--border-subtle);
  padding-top: var(--space-6);
  padding-bottom: var(--space-6);
  margin-top: auto;
}

.site-footer p {
  font-size: var(--text-sm);
  color: var(--ink-secondary);
  margin-bottom: var(--space-2);
}

.site-footer p:last-child {
  margin-bottom: 0;
}

.trademark {
  color: var(--ink-tertiary);
  font-size: var(--text-xs);
}

/* 
   Accessibility & Motion 
*/
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

@media (prefers-reduced-motion: reduce) {
  /* The label swap and the note carry the cue instead of a frozen broken circle. */
  button.is-busy::after {
    display: none;
  }
}