/* Yantrabodha — Reddit-style layout */

:root {
  --font-sans: "DM Sans", system-ui, -apple-system, sans-serif;
  --font-display: "Fraunces", var(--font-sans);
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --primary-light: #eef2ff;
  --accent: #6366f1;
  --accent-secondary: #0d9488;
  --accent-secondary-muted: #ccfbf1;
  --accent-orange: #ff4500;
  --accent-orange-muted: #ff6b35;
  --border: #e2e8f0;
  --border-strong: #cbd5e1;
  --text: #0f172a;
  --text-muted: #475569;
  --text-light: #64748b;
  --bg: #f1f5f9;
  --bg-card: #ffffff;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.08), 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-focus: 0 0 0 3px var(--primary-light);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-input: 8px;
  --radius-full: 9999px;
  --sidebar-left-width: 240px;
  --sidebar-right-width: 300px;
  --top-bar-height: 56px;
}

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

html {
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--bg);
  margin: 0;
  padding: 0;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  overflow-x: hidden;
  /* Safe area for notched devices */
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
}

/* ——— App layout: top bar + three columns ——— */
.app-layout {
  display: grid;
  grid-template-columns: var(--sidebar-left-width) 1fr var(--sidebar-right-width);
  grid-template-rows: var(--top-bar-height) minmax(0, 1fr);
  grid-template-areas:
    "topbar topbar topbar"
    "left main right";
  height: 100vh;
  max-height: 100vh;
  overflow: hidden;
}

.top-bar {
  grid-area: topbar;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0 1rem;
  padding-top: env(safe-area-inset-top);
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow);
}

.top-bar-logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
  letter-spacing: -0.02em;
  flex-shrink: 0;
  position: relative;
  z-index: 1;
}

.top-bar-logo:hover {
  color: var(--primary-hover);
}

.top-bar-menu-btn {
  display: none;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  width: 44px;
  height: 44px;
  padding: 0;
  background: none;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--text);
  -webkit-tap-highlight-color: transparent;
  position: relative;
  z-index: 1;
}

.top-bar-menu-btn:hover {
  background: var(--bg);
}

.menu-icon {
  display: block;
  width: 20px;
  height: 2px;
  background: currentColor;
  box-shadow: 0 -6px 0 currentColor, 0 6px 0 currentColor;
}

.top-bar-search {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 560px;
  display: flex;
  align-items: center;
  box-sizing: border-box;
  padding: 0 0.5rem;
  z-index: 0;
}

.top-bar-search input,
.top-bar-search .search-input-with-icon {
  width: 100%;
  padding: 0.5rem 1rem 0.5rem 2.5rem;
  font-size: 0.9375rem;
  font-family: inherit;
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  background: var(--bg);
  transition: border-color 0.15s, box-shadow 0.15s;
}

.top-bar-search input:focus,
.top-bar-search .search-input-with-icon:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: var(--shadow-focus);
}

.top-bar-search input.search-input-with-icon {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='18' height='18' viewBox='0 0 24 24' fill='none' stroke='%23475569' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='11' cy='11' r='8'/%3E%3Cpath d='m21 21-4.35-4.35'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: 0.75rem center;
  background-size: 1.125rem;
  padding-left: 2.5rem;
}

.top-bar-auth {
  flex-shrink: 0;
  margin-left: auto;
  position: relative;
  z-index: 1;
}

/* ——— Left sidebar ——— */
.left-sidebar {
  grid-area: left;
  background: var(--bg-card);
  border-right: 1px solid var(--border);
  overflow-y: auto;
  overflow-x: hidden;
  padding: 1rem 0;
  min-height: 0; /* allow grid item to shrink and scroll */
  display: flex;
  flex-direction: column;
}

.sidebar-auth-mobile {
  display: none;
  margin-top: auto;
  padding: 1rem 1rem 0;
  border-top: 1px solid var(--border);
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  margin-bottom: 1.5rem;
}

.sidebar-nav-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-muted);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: background 0.15s, color 0.15s;
}

.sidebar-nav-item:hover {
  background: var(--bg);
  color: var(--text);
}

.sidebar-nav-item.active {
  background: var(--primary-light);
  color: var(--primary);
}

.sidebar-nav-icon {
  font-size: 1.1rem;
  line-height: 1;
}

.sidebar-filters {
  padding: 0 1rem;
  border-top: 1px solid var(--border);
  padding-top: 1rem;
}

.sidebar-filters-title {
  margin: 0 0 0.75rem 0;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.sidebar-filter-label {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-bottom: 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.sidebar-filter-label:last-child {
  margin-bottom: 0;
}

.sidebar-filter-label select {
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  font-family: inherit;
  border: 1px solid var(--border);
  border-radius: var(--radius-input);
  background: var(--bg-card);
  color: var(--text);
  cursor: pointer;
  width: 100%;
}

.sidebar-filter-label select:focus {
  outline: none;
  border-color: var(--primary);
}

/* ——— Main content ——— */
.main-content {
  grid-area: main;
  min-width: 0;
  min-height: 0; /* allow grid item to shrink and scroll */
  overflow-y: auto;
  overflow-x: hidden;
  padding: 1.5rem;
  background: var(--bg);
}

.panel {
  display: none;
}

.panel.active {
  display: block;
}

.search-results-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.search-results-title {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text);
}

/* ——— Right sidebar ——— */
.right-sidebar {
  grid-area: right;
  background: var(--bg-card);
  border-left: 1px solid var(--border);
  overflow-y: auto;
  overflow-x: hidden;
  padding: 1rem;
  min-height: 0; /* allow grid item to shrink and scroll */
}

.sidebar-widget {
  background: var(--bg);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 1rem;
  margin-bottom: 1rem;
}

.sidebar-widget:last-child {
  margin-bottom: 0;
}

.widget-title {
  margin: 0 0 0.75rem 0;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.recent-tips-list {
  font-size: 0.875rem;
}

.recent-tips-loading,
.recent-tips-empty {
  color: var(--text-light);
  font-size: 0.875rem;
}

.recent-tip-item {
  display: block;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  text-decoration: none;
  line-height: 1.35;
  transition: color 0.15s;
}

.recent-tip-item:last-child {
  border-bottom: none;
}

.recent-tip-item:hover {
  color: var(--primary);
}

.recent-tip-item .recent-tip-time {
  font-size: 0.75rem;
  color: var(--text-light);
  margin-left: 0.25rem;
}

.about-text {
  margin: 0 0 0.5rem 0;
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.about-tip-count {
  margin: 0;
  font-size: 0.8125rem;
  color: var(--text-light);
  font-weight: 500;
}

/* ——— Auth (top bar) ——— */
.auth-loggedin {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.auth-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  object-fit: cover;
}

.auth-name {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
}

.btn-sm {
  padding: 0.4rem 0.75rem;
  font-size: 0.8125rem;
}

.signin-to-comment {
  margin: 0 0 0.5rem 0;
  font-size: 0.875rem;
  color: var(--text-light);
}

.auth-signin-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.auth-sep {
  font-size: 0.75rem;
  color: var(--text-light);
}

body.auth-modal-open {
  overflow: hidden;
  height: 100%;
}

.auth-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  overflow: auto;
}

.auth-modal[hidden] {
  display: none !important;
}

.auth-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
}

.auth-modal-box {
  position: relative;
  background: var(--bg-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 1.75rem 1.5rem;
  max-width: 360px;
  width: 100%;
}

.auth-modal-close {
  position: absolute;
  top: 0.6rem;
  right: 0.6rem;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-muted);
  line-height: 1;
  padding: 0.25rem;
  border-radius: var(--radius-sm);
  transition: color 0.15s, background 0.15s;
}

.auth-modal-close:hover {
  color: var(--text);
  background: var(--bg);
}

.auth-modal-close:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus);
}

.auth-modal-title {
  margin: 0 0 1rem 0;
  font-size: 1.25rem;
  font-weight: 600;
}

.auth-form label {
  display: block;
  margin-bottom: 0.75rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
}

.auth-form input {
  display: block;
  width: 100%;
  margin-top: 0.25rem;
  padding: 0.55rem 0.85rem;
  font-size: 0.9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-input);
}

.auth-form button[type="submit"] {
  margin-top: 0.5rem;
}

.auth-modal-switch {
  margin: 1rem 0 0 0;
  font-size: 0.875rem;
  color: var(--text-light);
}

.auth-link {
  background: none;
  border: none;
  color: var(--primary);
  cursor: pointer;
  font-size: inherit;
  font-weight: 500;
  text-decoration: underline;
  transition: color 0.15s;
}

.auth-link:hover {
  color: var(--primary-hover);
}

.auth-link:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: 2px;
}

.auth-modal-error {
  margin: 0.85rem 0 0 0;
  padding: 0.5rem 0;
  font-size: 0.875rem;
  color: #b91c1c;
  line-height: 1.4;
}

/* ——— Feed & panels ——— */
.feed {
  min-height: 140px;
}

.empty-state {
  text-align: center;
  padding: 4rem 2.5rem;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 2px dashed var(--border);
  box-shadow: var(--shadow);
}

.empty-icon {
  font-size: 3rem;
  margin-bottom: 1.25rem;
  opacity: 0.75;
}

.empty-title {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.5rem;
}

.empty-text {
  color: var(--text-light);
  font-size: 0.9375rem;
  line-height: 1.5;
}

.search-empty {
  text-align: center;
  padding: 3rem 2rem;
  color: var(--text-light);
  font-size: 0.9375rem;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 2px dashed var(--border-strong);
  box-shadow: var(--shadow);
}

/* ——— Article cards ——— */
.article-card-wrapper {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.article-card-wrapper:hover {
  box-shadow: var(--shadow-md);
}

.article-card-wrapper.card-compact {
  cursor: pointer;
}

.article-card-wrapper.card-compact:hover {
  border-color: var(--border-strong);
}

.card-html {
  padding: 0;
}

/* ——— Compact card (feed list) ——— */
.card-compact-inner {
  padding: 1rem 1.25rem;
}

.card-compact-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.5rem;
}

.card-compact-top .card-author-row {
  margin-bottom: 0;
}

.card-compact-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.card-compact-title {
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--text);
  margin: 0 0 0.5rem 0;
  line-height: 1.35;
}

.card-compact-preview {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.45;
  margin: 0 0 0.5rem 0;
}

.card-compact-preview.article-body h1,
.card-compact-preview.article-body h2,
.card-compact-preview.article-body h3 {
  margin-top: 0.85rem;
  margin-bottom: 0.4rem;
  font-weight: 600;
  color: var(--text);
}

.card-compact-preview.article-body p {
  margin-bottom: 0.5rem;
}

.card-engagement {
  font-size: 0.8rem;
  color: var(--text-light);
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.card-engagement span:nth-child(odd) {
  color: var(--text-muted);
}

/* ——— Post detail panel ——— */
.post-detail-header {
  margin-bottom: 1rem;
}

.post-detail-article {
  margin-bottom: 1rem;
}

.post-detail-article .article-card-wrapper {
  margin-bottom: 0;
}

.article-card-inner {
  padding: 1.5rem 1.65rem;
  background: var(--bg-card);
}

.card-author-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.85rem;
}

.card-author-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}

.card-author-avatar-initial {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 0.875rem;
  font-weight: 600;
}

.card-author-meta {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.card-author-name {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text);
}

.card-author-time {
  font-size: 0.75rem;
  color: var(--text-light);
  font-weight: 500;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.type-badge {
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-input);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.card-lang {
  font-size: 0.75rem;
  color: var(--text-light);
  font-weight: 500;
}

.card-title {
  font-weight: 600;
  font-size: 1.2rem;
  color: var(--text);
  margin-bottom: 0.5rem;
  line-height: 1.35;
}

.article-body {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.65;
  margin-bottom: 0.75rem;
}

.article-body h1,
.article-body h2,
.article-body h3 {
  margin-top: 0.85rem;
  margin-bottom: 0.4rem;
  font-weight: 600;
  color: var(--text);
}

.article-body p {
  margin-bottom: 0.5rem;
}

.card-footer {
  font-size: 0.8rem;
  color: var(--text-light);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  margin-top: 0.85rem;
  padding-top: 0.85rem;
  border-top: 1px solid var(--border);
}

.card-tags {
  margin-top: 0.6rem;
}

.tag-pill {
  display: inline-block;
  background: var(--bg);
  color: var(--text-muted);
  padding: 0.3rem 0.65rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 500;
  margin-right: 0.4rem;
  margin-bottom: 0.3rem;
  transition: background 0.15s, color 0.15s;
}

.tag-pill:hover {
  background: var(--accent-secondary-muted);
  color: var(--accent-secondary);
}

.card-comments {
  margin-top: 0.85rem;
  padding-top: 0.85rem;
  border-top: 1px solid var(--border);
}

.comments-header {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.5rem;
}

.comment-line {
  font-size: 0.875rem;
  margin-bottom: 0.85rem;
  padding: 0.5rem 0;
  border-left: 2px solid var(--border);
  padding-left: 0.75rem;
  margin-left: 0.25rem;
}

.comment-line:last-child {
  margin-bottom: 0;
}

.comment-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.35rem;
}

.comment-avatar {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}

.comment-avatar-initial {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  color: var(--text-muted);
  font-size: 0.7rem;
  font-weight: 600;
}

.comment-author {
  font-weight: 600;
  color: var(--text);
}

.comment-time {
  font-size: 0.75rem;
  color: var(--text-light);
}

.comment-line .comment-body {
  color: var(--text-muted);
  line-height: 1.5;
}

.show-all-comments {
  margin-top: 0.5rem;
}

.show-all-comments summary {
  color: var(--accent-orange-muted);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
}

.show-all-comments summary:hover {
  color: var(--accent-orange);
  text-decoration: underline;
}

.comment-list {
  margin-top: 0.5rem;
}

/* Comments list below comment box (post detail) — no dividers between comments */
.post-detail-comments-list {
  margin-top: 1.5rem;
}

.post-detail-comments-list .comments-section {
  margin: 0;
}

.post-detail-comments-list .comments-header {
  margin-bottom: 0.75rem;
}

.post-detail-comments-list .comments-thread {
  margin: 0;
}

.post-detail-comments-list .comment-line {
  margin-bottom: 1rem;
  padding: 0.6rem 0 0.6rem 0.75rem;
  border-left: 2px solid var(--border);
  margin-left: 0.25rem;
  border-bottom: none;
}

.post-detail-comments-list .comment-line:last-child {
  margin-bottom: 0;
}

.card-comment-row {
  padding: 1rem 0 0.5rem;
}

.comment-box-container {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.comment-box-container .comment-input,
.comment-box-textarea {
  width: 100%;
  padding: 1.25rem 0.75rem 0.5rem;
  font-size: 0.875rem;
  font-family: inherit;
  border: none;
  border-radius: 0;
  resize: vertical;
  min-height: 56px;
  background: var(--bg-card);
  display: block;
  box-sizing: border-box;
}

.comment-box-container .comment-input:focus,
.comment-box-textarea:focus {
  outline: none;
}

.comment-box-actions {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.75rem;
  background: var(--bg-card);
}

.comment-box-submit {
  margin: 0;
}

.comment-box-signin {
  padding: 1rem 1.25rem;
}

.comment-box-signin .signin-to-comment {
  margin: 0 0 0.75rem 0;
}

.comment-input {
  width: 100%;
  padding: 0.6rem 0.75rem;
  font-size: 0.9rem;
  font-family: inherit;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 0.5rem;
  resize: vertical;
  min-height: 64px;
  background: var(--bg-card);
}

.submit-comment-btn {
  margin-top: 0.25rem;
}

/* ——— Buttons ——— */
.btn {
  padding: 0.6rem 1.25rem;
  font-size: 0.9rem;
  font-weight: 600;
  font-family: inherit;
  border-radius: var(--radius-input);
  cursor: pointer;
  border: none;
  transition: background 0.2s ease, transform 0.05s ease, box-shadow 0.2s ease;
}

.btn:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus);
}

.btn:active {
  transform: scale(0.98);
}

/* Minimum touch target for mobile */
.btn,
.sidebar-nav-item,
a.top-bar-logo,
.recent-tip-item,
.tag-pill {
  -webkit-tap-highlight-color: transparent;
}

@media (pointer: coarse) {
  .btn,
  .btn-sm {
    min-height: 44px;
    min-width: 44px;
    padding: 0.5rem 1rem;
  }
  .btn-sm {
    min-width: 44px;
    padding: 0.5rem 0.85rem;
  }
  .sidebar-nav-item {
    min-height: 44px;
    padding: 0.65rem 1rem;
  }
  .recent-tip-item {
    padding: 0.65rem 0;
  }
}

.btn.primary {
  background: var(--primary);
  color: white;
  box-shadow: 0 2px 6px rgba(79, 70, 229, 0.2);
}

.btn.primary:hover {
  background: var(--primary-hover);
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

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

.btn.secondary:hover {
  background: var(--border);
}

/* ——— Messages ——— */
.message {
  margin: 0.85rem 0 0 0;
  font-size: 0.9rem;
  color: var(--text-muted);
  min-height: 1.5em;
}

/* ——— Submit panel ——— */
.submit-layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 2rem;
  max-width: 720px;
}

.submit-form .group {
  margin-bottom: 1.5rem;
}

.submit-form label {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.submit-form input[type="text"],
.submit-form textarea {
  width: 100%;
  padding: 0.65rem 0.85rem;
  font-size: 0.9rem;
  font-family: inherit;
  border: 1px solid var(--border);
  border-radius: var(--radius-input);
  background: var(--bg-card);
  transition: border-color 0.15s, box-shadow 0.15s;
}

.submit-form textarea {
  resize: vertical;
  min-height: 140px;
}

.options-accordion {
  margin: 1.5rem 0;
  padding: 1.1rem 1.25rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #f8fafc;
}

.options-accordion summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--text-muted);
  font-size: 0.875rem;
  padding: 0.2rem 0;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

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

.options-accordion summary::before {
  content: "▾";
  font-size: 0.7rem;
  transition: transform 0.2s ease;
}

.options-accordion[open] summary::before {
  transform: rotate(-180deg);
}

.options-accordion summary:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus);
  border-radius: var(--radius-sm);
}

.options-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.options-grid label {
  margin-bottom: 0;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.options-accordion .full-width {
  margin-top: 1rem;
}

#submit-btn {
  margin-top: 0.75rem;
  padding: 0.7rem 1.5rem;
  font-size: 0.95rem;
  font-weight: 600;
  box-shadow: 0 2px 8px rgba(79, 70, 229, 0.25);
}

.submit-message-wrap {
  min-height: 2.5rem;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ——— Responsive: collapse sidebars ——— */
@media (max-width: 1024px) {
  .app-layout {
    grid-template-columns: 1fr var(--sidebar-right-width);
    grid-template-areas:
      "topbar topbar"
      "main right";
  }

  .left-sidebar {
    position: fixed;
    left: 0;
    top: calc(var(--top-bar-height) + env(safe-area-inset-top, 0px));
    bottom: 0;
    width: var(--sidebar-left-width);
    padding-left: env(safe-area-inset-left, 0px);
    z-index: 90;
    transform: translateX(-100%);
    transition: transform 0.2s ease;
    box-shadow: var(--shadow-lg);
  }

  .left-sidebar.is-open {
    transform: translateX(0);
  }

  .sidebar-overlay {
    display: none;
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    top: calc(var(--top-bar-height) + env(safe-area-inset-top, 0px));
    background: rgba(0, 0, 0, 0.35);
    z-index: 85;
    -webkit-tap-highlight-color: transparent;
  }

  .left-sidebar.is-open ~ .sidebar-overlay {
    display: block;
  }

  .top-bar-menu-btn {
    display: flex;
  }
}

@media (max-width: 768px) {
  .app-layout {
    grid-template-columns: 1fr;
    grid-template-areas:
      "topbar"
      "main";
  }

  /* Hide "Yantrabodha" logo text in top bar on mobile */
  .top-bar-logo .logo-text {
    display: none;
  }

  /* Hide top-bar logged-in auth on mobile (Sign out moves to left sidebar) */
  .top-bar-auth #auth-loggedin {
    display: none !important;
  }

  .sidebar-auth-mobile.is-logged-in {
    display: block;
  }

  .right-sidebar {
    display: none;
  }

  .main-content {
    padding: 1rem;
    padding-bottom: calc(1rem + env(safe-area-inset-bottom));
  }

  .submit-layout {
    grid-template-columns: 1fr;
  }

  .top-bar-search {
    max-width: none;
    min-width: 0;
  }

  .auth-signin-row {
    flex-wrap: wrap;
  }

  /* Compact cards: stack meta and tighten padding */
  .card-compact-inner {
    padding: 0.85rem 1rem;
  }

  .card-compact-top {
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .card-compact-title {
    font-size: 1rem;
  }

  .card-compact-preview {
    font-size: 0.8125rem;
  }

  .article-card-inner {
    padding: 1rem 1.15rem;
  }

  .search-results-header {
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .empty-state,
  .search-empty {
    padding: 2rem 1.25rem;
  }

  .auth-modal-box {
    margin: 1rem;
    max-height: calc(100vh - 2rem);
    overflow-y: auto;
  }

  .comment-box-container .comment-input,
  .comment-box-textarea {
    min-height: 80px;
    font-size: 16px; /* prevents zoom on focus on iOS */
  }
}

@media (max-width: 480px) {
  .top-bar {
    padding: 0 0.5rem;
    gap: 0.5rem;
  }

  .top-bar-logo {
    font-size: 1.25rem;
  }

  .top-bar-search input,
  .top-bar-search .search-input-with-icon {
    font-size: 16px; /* prevents zoom on focus on iOS */
    min-width: 0;
  }

  /* Auth: compact so buttons don’t overflow */
  .auth-signin-row {
    gap: 0.35rem;
  }

  .auth-signin-row .btn-sm {
    font-size: 0.75rem;
    padding: 0.45rem 0.6rem;
  }

  .auth-loggedin {
    flex-wrap: wrap;
    gap: 0.35rem;
  }

  .auth-loggedin .auth-name {
    display: none; /* hide name on very small screens to save space */
  }

  .auth-modal-box {
    margin: 0.5rem;
    padding: 1.25rem 1rem;
  }

  .main-content {
    padding: 0.75rem;
  }

  .card-compact-inner {
    padding: 0.75rem 0.85rem;
  }

  .options-grid {
    grid-template-columns: 1fr;
  }
}