/* ── Color System ── */

:root {
  --background: #ffffff;
  --foreground: #0a0a0a;
  --card: #ffffff;
  --card-border: #e5e7eb;
  --muted: #737373;
  --primary: #171717;
  --primary-foreground: #fafafa;
  --secondary-border: #e5e7eb;
  --link: #2563eb;
  --code-bg: #f4f4f5;
  --destructive: #ef4444;
  --warning: #f59e0b;
  --success: #22c55e;
  --ring: #2563eb;
  --overlay: rgba(0, 0, 0, 0.5);
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #09090b;
    --foreground: #fafafa;
    --card: #09090b;
    --card-border: #27272a;
    --muted: #a1a1aa;
    --primary: #fafafa;
    --primary-foreground: #171717;
    --secondary-border: #27272a;
    --link: #3b82f6;
    --code-bg: #18181b;
    --destructive: #dc2626;
    --warning: #d97706;
    --success: #16a34a;
    --ring: #3b82f6;
    --overlay: rgba(0, 0, 0, 0.7);
  }
}

/* ── Reset & Base ── */

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

body {
  font-family: system-ui, -apple-system, sans-serif;
  line-height: 1.5;
  font-size: 0.875rem;
  max-width: 800px;
  margin: 0 auto;
  padding: 32px 20px;
  color: var(--foreground);
  background-color: var(--background);
  min-height: 100vh;
}

/* ── Typography ── */

h1, h2, h3 {
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.2;
  margin-bottom: 16px;
  color: var(--foreground);
}

h1 {
  font-size: 1.5rem;
}

h2 {
  font-size: 1.25rem;
}

h3 {
  font-size: 1rem;
}

a {
  text-decoration: none;
  color: var(--link);
  transition: opacity 0.2s;
}

a:hover {
  opacity: 0.85;
  text-decoration: underline;
}

p {
  margin: 8px 0;
}

ul, ol {
  padding-right: 20px;
}

li {
  margin-bottom: 8px;
}

code {
  font-family: monospace;
  background: var(--code-bg);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.85em;
  direction: ltr;
  display: inline-block;
  color: var(--foreground);
}

pre {
  background: var(--code-bg);
  padding: 14px;
  border-radius: 0.375rem;
  overflow-x: auto;
  direction: ltr;
  text-align: left;
  border: 1px solid var(--card-border);
  margin: 12px 0;
}

pre code {
  background: none;
  padding: 0;
  font-size: 0.8rem;
}

/* ── Navbar ── */

.navbar {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 32px;
}

.navbar__toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  padding: 0;
  background: none;
  border: none;
  border-radius: 0.375rem;
  color: var(--muted);
  cursor: pointer;
}

.navbar__toggle:hover {
  color: var(--foreground);
}

.navbar__menu {
  display: flex;
  align-items: center;
  list-style: none;
  padding: 0;
  margin: 0;
  gap: 4px;
}

.navbar__menu li a {
  color: var(--muted);
  font-weight: 500;
  font-size: 0.875rem;
  padding: 4px 10px;
  border-radius: 0.375rem;
}

.navbar__menu li a:hover {
  color: var(--foreground);
  text-decoration: none;
}

@media (max-width: 600px) {
  .navbar {
    flex-wrap: wrap;
    justify-content: flex-end;
  }

  .navbar__toggle {
    display: flex;
  }

  .navbar__menu {
    display: none;
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    margin-top: 8px;
    gap: 0;
  }

  .navbar__menu--open {
    display: flex;
  }

  .navbar__menu li a {
    display: block;
    padding: 8px;
    text-align: end;
  }
}

/* ── Cards ── */

.card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 0.75rem;
  padding: 24px;
  margin: 24px 0;
}

.card--centered {
  text-align: center;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.card--wide {
  max-width: 750px;
  margin-left: auto;
  margin-right: auto;
  text-align: right;
  line-height: 1.8;
}

.card--success {
  border-color: var(--success);
}

.card--danger {
  border-color: var(--destructive);
}

.card--warning {
  border-color: var(--warning);
}

/* ── Buttons ── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 2.25rem;
  padding: 0 16px;
  border-radius: 0.375rem;
  font-weight: 500;
  font-size: 0.875rem;
  font-family: inherit;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: opacity 0.2s;
  text-align: center;
}

.btn:hover {
  opacity: 0.85;
  text-decoration: none;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn--primary {
  background: var(--primary);
  color: var(--primary-foreground);
}

.btn--secondary {
  background: transparent;
  border: 1px solid var(--secondary-border);
  color: var(--foreground);
}

.btn--full {
  width: 100%;
}

.btn--sm {
  height: 1.75rem;
  padding: 0 10px;
  font-size: 0.8rem;
}

/* ── Forms ── */

.form-group {
  margin-bottom: 20px;
}

label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: var(--muted);
  font-size: 0.875rem;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="url"] {
  width: 100%;
  height: 2.25rem;
  padding: 0 12px;
  background: var(--background);
  border: 1px solid var(--card-border);
  border-radius: 0.375rem;
  color: var(--foreground);
  font-size: 0.875rem;
  font-family: inherit;
  direction: ltr;
}

input:focus {
  outline: none;
  border-color: var(--ring);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--ring) 25%, transparent);
}

/* ── Code blocks ── */

.code-block {
  direction: ltr;
  text-align: left;
  background: var(--code-bg);
  padding: 12px;
  border-radius: 0.375rem;
  color: var(--foreground);
  font-family: monospace;
  font-size: 0.8rem;
  margin: 12px 0;
  overflow-x: auto;
  word-break: break-all;
  white-space: pre-wrap;
  border: 1px solid var(--card-border);
  cursor: pointer;
}

/* ── Proxy box ── */

.proxy-box {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 0.75rem;
  padding: 20px;
  margin: 24px auto;
  max-width: 600px;
  text-align: center;
}

.proxy-box__link {
  font-family: monospace;
  background: var(--code-bg);
  padding: 10px;
  border-radius: 0.375rem;
  color: var(--foreground);
  cursor: pointer;
  word-break: break-all;
  display: block;
  font-size: 0.875rem;
  direction: ltr;
  margin: 12px 0;
  transition: opacity 0.2s;
}

.proxy-box__link:hover {
  opacity: 0.85;
}

/* ── Alerts ── */

.alert {
  padding: 14px;
  border-radius: 0.375rem;
  margin: 16px 0;
  font-size: 0.875rem;
  line-height: 1.6;
  text-align: right;
}

.alert--info {
  background: color-mix(in srgb, var(--link) 6%, transparent);
  border-right: 2px solid var(--link);
}

.alert--danger {
  background: color-mix(in srgb, var(--destructive) 6%, transparent);
  border-right: 2px solid var(--destructive);
}

.alert--warning {
  background: color-mix(in srgb, var(--warning) 6%, transparent);
  border-right: 2px solid var(--warning);
}

.alert--success {
  background: color-mix(in srgb, var(--success) 6%, transparent);
  border-right: 2px solid var(--success);
}

/* ── Toast ── */

.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--foreground);
  color: var(--background);
  padding: 8px 20px;
  border-radius: 0.375rem;
  font-size: 0.875rem;
  font-weight: 500;
  opacity: 0;
  transition: transform 0.3s, opacity 0.3s;
  z-index: 2000;
  pointer-events: none;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.toast--visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ── Modal ── */

.modal {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: var(--overlay);
}

.modal__content {
  background-color: var(--card);
  border: 1px solid var(--card-border);
  margin: 15% auto;
  padding: 28px;
  width: 85%;
  max-width: 400px;
  border-radius: 0.75rem;
  text-align: center;
}

.modal__error {
  color: var(--destructive);
  margin-bottom: 16px;
  font-weight: 600;
}

/* ── Avatar ── */

.avatar {
  width: 56px;
  height: 56px;
  background: var(--code-bg);
  border-radius: 50%;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--foreground);
}

/* ── QR wrap ── */

.qr-wrap {
  background: white;
  padding: 10px;
  border-radius: 0.5rem;
  display: inline-block;
  margin: 16px 0;
}

/* ── Doc list ── */

.doc-list {
  list-style: none;
  padding: 0;
}

.doc-list li {
  margin: 8px 0;
  padding: 12px;
  border-radius: 0.375rem;
  transition: background 0.15s;
}

.doc-list li:hover {
  background: var(--code-bg);
}

.doc-list a {
  font-weight: 600;
  display: block;
  margin-bottom: 4px;
}

.doc-list span {
  font-size: 0.8rem;
  color: var(--muted);
}

/* ── Command info blocks (admin docs) ── */

.cmd-info {
  margin-bottom: 24px;
  padding: 14px;
  border-radius: 0.375rem;
}

.cmd-info h3 {
  margin-top: 0;
}

.cmd-info p {
  margin: 4px 0;
  font-size: 0.875rem;
  color: var(--muted);
}

/* ── Footer ── */

.footer {
  margin-top: 40px;
  padding: 16px 0;
  font-size: 0.8rem;
  color: var(--muted);
}

/* ── Utilities ── */

.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--muted); }
.text-danger { color: var(--destructive); }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-sm { font-size: 0.8rem; }
.text-xs { font-size: 0.75rem; }
.mono { font-family: monospace; direction: ltr; }
.rtl { direction: rtl; }
.mt-sm { margin-top: 8px; }
.mt-md { margin-top: 16px; }
.mt-lg { margin-top: 24px; }
.mb-sm { margin-bottom: 8px; }
.mb-md { margin-bottom: 16px; }
.hidden { display: none; }
.block { display: block; }
.inline-block { display: inline-block; }

.flex { display: flex; }
.flex-1 { flex: 1; }
.flex-wrap { flex-wrap: wrap; }
.flex-center { justify-content: center; }
.gap-sm { gap: 8px; }
.gap-md { gap: 12px; }

.list-plain { list-style: none; margin: 8px 0; padding: 0 15px; }

/* ── Responsive ── */

@media (max-width: 600px) {
  body {
    padding: 20px 14px;
  }
  .card {
    padding: 16px;
  }
}