/* ==========================================================================
   Global variables
   ========================================================================== */
:root {
  color-scheme: light;

  --font-sans: 'Noto Sans Thai', -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial,
    sans-serif;

  --color-text: #242424;
  --color-text-muted: #6b6b6b;
  --color-background: #ffffff;
  --color-border: #d9d9d9;
  --color-border-subtle: #e6e6e6;
  --color-accent: #1a8917;
  --color-error-bg: #fdecea;
  --color-error-text: #b3261e;
  --color-success-bg: #e6f4ea;
  --color-success-text: #1a8917;
  --color-warning-bg: #fff4e5;
  --color-warning-text: #8a5300;

  --radius-sm: 4px;
  --radius-pill: 999px;

  --content-width: 720px;
  --content-width-wide: 960px;
}

/* ==========================================================================
   Reset & base elements
   ========================================================================== */
* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-background);
}

/* ==========================================================================
   Layout
   ========================================================================== */
.container {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

.container:has(.admin) {
  max-width: var(--content-width-wide);
}

/* ==========================================================================
   Site header
   ========================================================================== */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
  border-bottom: 1px solid var(--color-border-subtle);
}

.site-header .logo {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-text);
  text-decoration: none;
}

.site-header .logo span {
  color: var(--color-accent);
}

.site-header nav {
  display: flex;
  align-items: center;
}

.site-header nav a,
.site-header nav .nav-user {
  margin-left: 1.5rem;
  color: var(--color-text);
  text-decoration: none;
}

.inline-form {
  margin-left: 1.5rem;
  display: inline;
}

.link-button {
  background: none;
  border: none;
  padding: 0;
  font: inherit;
  color: var(--color-text);
  cursor: pointer;
  text-decoration: underline;
}

/* ==========================================================================
   Articles
   ========================================================================== */
.article-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.article-card h2 {
  margin: 0 0 0.25rem;
}

.article-card h2 a {
  color: var(--color-text);
  text-decoration: none;
}

.article-card .meta,
.article-detail .meta {
  color: var(--color-text-muted);
  font-size: 0.875rem;
  display: flex;
  gap: 0.75rem;
}

/* ==========================================================================
   Auth form
   ========================================================================== */
.auth-form {
  max-width: 360px;
  margin: 0 auto;
}

.auth-form form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.auth-form label {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
  font-size: 0.875rem;
}

.auth-form input {
  padding: 0.625rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 1rem;
}

.auth-form button[type='submit'] {
  padding: 0.625rem;
  border: none;
  border-radius: var(--radius-pill);
  background: var(--color-text);
  color: var(--color-background);
  font-family: inherit;
  font-size: 1rem;
  cursor: pointer;
}

.google-btn {
  display: block;
  text-align: center;
  padding: 0.625rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  color: var(--color-text);
  text-decoration: none;
}

.auth-divider {
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.875rem;
  margin: 1rem 0;
}

.auth-switch {
  margin-top: 1.5rem;
  font-size: 0.875rem;
  text-align: center;
}

.form-error {
  background: var(--color-error-bg);
  color: var(--color-error-text);
  padding: 0.625rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  margin-bottom: 1rem;
}

/* ==========================================================================
   Admin
   ========================================================================== */
.admin-nav {
  display: flex;
  gap: 1.5rem;
  margin: 1rem 0 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-border-subtle);
}

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

.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.admin-table th,
.admin-table td {
  text-align: left;
  padding: 0.75rem 0.5rem;
  border-bottom: 1px solid var(--color-border-subtle);
  vertical-align: middle;
}

.status-badge {
  display: inline-block;
  padding: 0.125rem 0.5rem;
  border-radius: var(--radius-pill);
  font-size: 0.75rem;
  text-transform: capitalize;
}

.status-badge.status-active {
  background: var(--color-success-bg);
  color: var(--color-success-text);
}

.status-badge.status-pending {
  background: var(--color-warning-bg);
  color: var(--color-warning-text);
}

.status-badge.status-suspended {
  background: var(--color-error-bg);
  color: var(--color-error-text);
}

.tier-badge {
  display: inline-block;
  padding: 0.125rem 0.5rem;
  border-radius: var(--radius-pill);
  font-size: 0.75rem;
  text-transform: capitalize;
  background: var(--color-border-subtle);
  color: var(--color-text-muted);
}

.tier-badge.tier-member {
  background: var(--color-success-bg);
  color: var(--color-success-text);
}

.tier-badge.tier-premium {
  background: var(--color-warning-bg);
  color: var(--color-warning-text);
}

.admin-actions {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  white-space: nowrap;
}

.admin-actions form {
  display: inline;
}

.admin-actions a,
.admin-actions button {
  font-size: 0.875rem;
  color: var(--color-text);
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.25rem 0.625rem;
  cursor: pointer;
  text-decoration: none;
  font-family: inherit;
}

.admin-actions button.danger {
  color: var(--color-error-text);
  border-color: var(--color-error-text);
}

.admin-form {
  max-width: 480px;
}

.admin-form form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.admin-form label {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
  font-size: 0.875rem;
}

.admin-form input,
.admin-form select,
.admin-form textarea {
  padding: 0.625rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 1rem;
}

.admin-form textarea {
  resize: vertical;
}

.admin-form button[type='submit'] {
  align-self: flex-start;
  padding: 0.625rem 1.25rem;
  border: none;
  border-radius: var(--radius-pill);
  background: var(--color-text);
  color: var(--color-background);
  font-family: inherit;
  font-size: 1rem;
  cursor: pointer;
}

/* ==========================================================================
   Article editor
   ========================================================================== */
.editor {
  max-width: 720px;
}

.editor .quota-hint {
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

.editor form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.editor label {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
  font-size: 0.875rem;
}

.editor input[type='text'],
.editor input[type='url'],
.editor input[type='file'] {
  padding: 0.625rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 1rem;
}

.editor .hidden-body-input {
  display: none;
}

.editor #editor-container {
  min-height: 280px;
  background: var(--color-background);
}

.editor .ql-toolbar.ql-snow {
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}

.editor .ql-container.ql-snow {
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  font-family: inherit;
  font-size: 1rem;
}

.editor .existing-attachments {
  margin: 0;
  padding-left: 1.25rem;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.editor .current-file {
  font-weight: 400;
  color: var(--color-text-muted);
}

.editor .premium-fields {
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-sm);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.editor .premium-fields legend {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-warning-text);
  padding: 0 0.25rem;
}

.editor button[type='submit'] {
  align-self: flex-start;
  padding: 0.625rem 1.5rem;
  border: none;
  border-radius: var(--radius-pill);
  background: var(--color-text);
  color: var(--color-background);
  font-family: inherit;
  font-size: 1rem;
  cursor: pointer;
}

/* ==========================================================================
   Article content & embeds
   ========================================================================== */
.article-body {
  line-height: 1.7;
}

.article-body img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
}

.article-body blockquote {
  border-left: 3px solid var(--color-border);
  margin: 1rem 0;
  padding-left: 1rem;
  color: var(--color-text-muted);
}

.article-body pre {
  background: var(--color-border-subtle);
  padding: 1rem;
  border-radius: var(--radius-sm);
  overflow-x: auto;
}

.embed-youtube {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  margin: 1.5rem 0;
}

.embed-youtube iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
  border-radius: var(--radius-sm);
}

.embed-audio {
  width: 100%;
  margin: 1.5rem 0;
}

.embed-html {
  width: 100%;
  height: 480px;
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-sm);
  margin: 1.5rem 0;
}

.attachments {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border-subtle);
}

.attachments h3 {
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
}

.attachments ul {
  padding-left: 1.25rem;
}