/* common.css — shared foundation for exe.dev pages */

/* ================================================================
   CSS Custom Properties
   ================================================================ */
:root {
  /* Colors — hierarchy: bg (page) → surface (cards) → subtle (inset) → muted (code) */
  --color-bg:           #fafafa;
  --color-surface:      #fff;
  --color-bg-subtle:    #f8f8f8;
  --color-bg-muted:     #f3f4f6;
  --color-bg-overlay:   rgba(0, 0, 0, 0.5);

  --color-text:         #111;
  --color-text-secondary: #666;
  --color-text-muted:   #999;

  --color-border:       #e5e5e5;
  --color-border-subtle: #f0f0f0;
  --color-border-input: #e0e0e0;

  --color-link:         #0066cc;
  --color-link-hover:   #004499;

  --color-success:      #16a34a;
  --color-success-light: #f0fdf4;
  --color-success-border: #86efac;
  --color-danger:       #dc2626;
  --color-danger-light: #fef2f2;
  --color-danger-border: #fca5a5;

  /* Typography */
  --font-mono:
    ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
    "Liberation Mono", monospace;
  --font-system:
    system-ui, -apple-system, sans-serif;

  --leading:            1.6;
  --text-base:          16px;
  --text-sm:            14px;
  --text-xs:            13px;
  --text-xxs:           12px;

  /* Spacing */
  --radius-sm:          4px;
  --radius-md:          6px;
  --radius-lg:          8px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg:           #111;
    --color-surface:      #1f1f1f;
    --color-bg-subtle:    #2a2a2a;
    --color-bg-muted:     #2a2a2a;
    --color-bg-overlay:   rgba(0, 0, 0, 0.7);

    --color-text:         #f3f4f6;
    --color-text-secondary: #9ca3af;
    --color-text-muted:   #6b7280;

    --color-border:       #333;
    --color-border-subtle: #333;
    --color-border-input: #333;

    --color-link:         #60a5fa;
    --color-link-hover:   #93c5fd;

    --color-success:      #86efac;
    --color-success-light: #052e16;
    --color-success-border: #166534;
    --color-danger:       #f87171;
    --color-danger-light: #450a0a;
    --color-danger-border: #991b1b;
  }
}

/* Explicit theme overrides for manual theme toggle (terminal, etc.) */
[data-theme="light"] {
  --color-bg:           #fafafa;
  --color-surface:      #fff;
  --color-bg-subtle:    #f8f8f8;
  --color-bg-muted:     #f3f4f6;
  --color-text:         #111;
  --color-text-secondary: #666;
  --color-text-muted:   #999;
  --color-border:       #e5e5e5;
  --color-border-subtle: #f0f0f0;
  --color-border-input: #e0e0e0;
  --color-link:         #0066cc;
  --color-link-hover:   #004499;
}

[data-theme="dark"] {
  --color-bg:           #111;
  --color-surface:      #1f1f1f;
  --color-bg-subtle:    #2a2a2a;
  --color-bg-muted:     #2a2a2a;
  --color-text:         #f3f4f6;
  --color-text-secondary: #9ca3af;
  --color-text-muted:   #6b7280;
  --color-border:       #333;
  --color-border-subtle: #333;
  --color-border-input: #333;
  --color-link:         #60a5fa;
  --color-link-hover:   #93c5fd;
}

/* ================================================================
   Reset
   ================================================================ */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* ================================================================
   Base
   ================================================================ */
body {
  font-family: var(--font-mono);
  font-size: var(--text-base);
  line-height: var(--leading);
  color: var(--color-text);
  background-color: var(--color-bg);
}

/* ================================================================
   Links
   ================================================================ */
a {
  color: var(--color-link);
  text-decoration: none;
}

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

/* ================================================================
   Inline code
   ================================================================ */
code {
  background: var(--color-bg-muted);
  color: var(--color-text);
  padding: 2px 6px;
  border-radius: 3px;
  font-size: var(--text-sm);
  font-family: var(--font-mono);
}

pre {
  background: var(--color-bg-muted);
  padding: 16px;
  border-radius: var(--radius-sm);
  overflow-x: auto;
  font-size: var(--text-sm);
  line-height: 1.5;
  border: 1px solid var(--color-border);
  font-family: var(--font-mono);
}

pre code {
  background: none;
  padding: 0;
  border-radius: 0;
  font-size: inherit;
}

/* ================================================================
   Buttons
   ================================================================ */
.btn {
  display: inline-block;
  padding: 8px 16px;
  border: 1px solid var(--color-border-input);
  background: var(--color-surface);
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: var(--text-xs);
  font-family: inherit;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn:hover {
  background: #f5f5f5;
  border-color: #d0d0d0;
  color: var(--color-text);
  text-decoration: none;
}

.btn-small {
  padding: 4px 8px;
  font-size: var(--text-xxs);
}

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

.btn-danger:hover {
  background: var(--color-danger);
  color: white;
}

@media (prefers-color-scheme: dark) {
  .btn:hover {
    border-color: #444;
  }
}

/* ================================================================
   Cards
   ================================================================ */
.info-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-input);
  border-radius: var(--radius-md);
  padding: 20px;
}

/* ================================================================
   Section titles (uppercase label style)
   ================================================================ */
.section-title {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ================================================================
   Tables (shared base)
   ================================================================ */
table {
  width: 100%;
  border-collapse: collapse;
}

table th {
  font-weight: 500;
  text-align: left;
  padding: 8px 12px;
  border-bottom: 2px solid var(--color-border);
  color: var(--color-text-secondary);
  font-size: var(--text-xs);
}

table td {
  padding: 8px 12px;
  border-bottom: 1px solid var(--color-border-subtle);
  font-size: var(--text-xs);
  color: var(--color-text);
}

table tr:last-child td {
  border-bottom: none;
}

table a {
  color: var(--color-link);
  text-decoration: none;
}

table a:hover {
  text-decoration: underline;
}

/* ================================================================
   Modal overlay
   ================================================================ */
.cmd-modal-overlay {
  position: fixed;
  inset: 0;
  background: var(--color-bg-overlay);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.15s, visibility 0.15s;
  z-index: 1000;
}

.cmd-modal-overlay.visible {
  opacity: 1;
  visibility: visible;
}

.cmd-modal {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 24px;
  width: 90%;
  max-width: 500px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.cmd-modal-title {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 16px;
}

.cmd-display {
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border-input);
  border-radius: var(--radius-sm);
  padding: 12px;
  font-family: inherit;
  font-size: var(--text-xs);
  color: var(--color-text);
  margin-bottom: 16px;
  word-break: break-all;
}

.cmd-output {
  font-size: var(--text-xs);
  padding: 12px;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  display: none;
}

.cmd-output.visible {
  display: block;
}

.cmd-output.success {
  background: var(--color-success-light);
  border: 1px solid var(--color-success-border);
  color: var(--color-success);
}

.cmd-output.error {
  background: var(--color-danger-light);
  border: 1px solid var(--color-danger-border);
  color: var(--color-danger);
}

.cmd-modal-buttons {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
}

.cmd-modal-buttons .btn.danger {
  background: var(--color-danger);
  border-color: var(--color-danger);
  color: white;
}

.cmd-modal-buttons .btn.danger:hover {
  background: #b91c1c;
  border-color: #b91c1c;
}

.cmd-modal-buttons .btn.danger:disabled {
  opacity: 0.6;
}

/* ================================================================
   Form inputs (shared)
   ================================================================ */
input[type="text"],
input[type="number"],
input[type="email"],
input[type="password"],
textarea {
  padding: 8px 12px;
  border: 1px solid var(--color-border-input);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: var(--text-xs);
  background: var(--color-surface);
  color: var(--color-text);
}

input:focus,
textarea:focus {
  outline: none;
  border-color: var(--color-text-muted);
}

@media (prefers-color-scheme: dark) {
  input::placeholder,
  textarea::placeholder {
    color: var(--color-text-muted);
  }
}

/* ================================================================
   Status messages
   ================================================================ */
.msg-error {
  color: var(--color-danger);
  font-size: var(--text-xs);
}

.msg-success {
  color: var(--color-success);
  font-size: var(--text-xs);
}

/* ================================================================
   Utility
   ================================================================ */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}