/* =========================================
   ROOT VARIABLES
========================================= */

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-rgb: 37, 99, 235;
  --secondary: #0f766e;
  --accent: #f97316;
  --ink: #111827;

  --bg-primary: #ffffff;
  --bg-secondary: #f6f7fb;
  --bg-tertiary: #e8eef8;

  --text-primary: #111827;
  --text-secondary: #6b7280;
  --text-tertiary: #9ca3af;

  --border: #e5e7eb;

  --danger: #ef4444;
  --success: #10b981;
  --warning: #f59e0b;

  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 8px;

  --shadow: 0 2px 8px rgba(15, 23, 42, 0.07);
  --shadow-lg: 0 10px 24px rgba(15, 23, 42, 0.13);
}

/* Dark Mode */
[data-theme="dark"] {
  --bg-primary: #0b1120;
  --bg-secondary: #111827;
  --bg-tertiary: #1f2937;

  --text-primary: #e5e7eb;
  --text-secondary: #9ca3af;
  --text-tertiary: #6b7280;

  --border: #334155;
}

/* =========================================
   BASE RESET
========================================= */

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

html, body {
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

a {
  text-decoration: none;
  color: inherit;
}

/* =========================================
   TYPOGRAPHY
========================================= */

h1, h2, h3, h4, h5 {
  margin: 0;
}

p {
  margin: 0;
  line-height: 1.6;
}

/* =========================================
   BUTTONS
========================================= */

.btn {
  border-radius: 999px;
  padding: 10px 16px;
  border: 1px solid transparent;
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: 0.2s;
}

.btn:hover {
  background: var(--bg-tertiary);
}

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

.btn.primary:hover {
  background: var(--primary-dark);
}

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

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

.btn.small {
  padding: 6px 10px;
  font-size: 13px;
}

/* Icon button */
.btn-icon {
  border: none;
  background: transparent;
  font-size: 18px;
  cursor: pointer;
  padding: 6px;
  color: var(--text-primary);
}

/* =========================================
   INPUTS & FORMS
========================================= */

.form-group {
  margin-bottom: 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
}

input,
textarea,
select {
  font-family: inherit;
  font-size: 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  padding: 10px 12px;
  background: var(--bg-primary);
  color: var(--text-primary);
  transition: 0.2s;
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(var(--primary-rgb), 0.2);
}

textarea {
  resize: vertical;
}

/* =========================================
   TOP NAV
========================================= */

.top-nav {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.top-nav.compact {
  padding: 10px 14px;
}

.logo {
  font-size: 18px;
  font-weight: 700;
}

/* =========================================
   BOTTOM NAV
========================================= */

.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--bg-primary);
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-around;
  padding: 10px 0;
  z-index: 1000;
}

.bottom-nav a {
  display: flex;
  flex-direction: column;
  align-items: center;
  font-size: 12px;
  color: var(--text-tertiary);
  gap: 4px;
}

.bottom-nav a.active {
  color: var(--primary);
}

.bottom-nav i {
  font-size: 18px;
}

/* =========================================
   CARDS
========================================= */

.card {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px;
  box-shadow: var(--shadow);
}

/* =========================================
   GRID
========================================= */

.content-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
}

@media (max-width: 600px) {
  .content-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* =========================================
   MODAL
========================================= */

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}

.modal-backdrop.show {
  display: flex;
}

.modal {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  padding: 20px;
  width: 100%;
  max-width: 400px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
}

/* =========================================
   UTILITIES
========================================= */

.text-center {
  text-align: center;
}

.hidden {
  display: none !important;
}

.mt-1 { margin-top: 4px; }
.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 12px; }
.mt-4 { margin-top: 16px; }

.mb-1 { margin-bottom: 4px; }
.mb-2 { margin-bottom: 8px; }
.mb-3 { margin-bottom: 12px; }
.mb-4 { margin-bottom: 16px; }

/* =========================================
   ANIMATIONS
========================================= */

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.fade-in {
  animation: fadeIn 0.3s ease;
}

/* =========================================
   ADDITIONS FOR FEED + STORIES + POSTS (NEW)
========================================= */

/* Page padding to avoid bottom nav overlap */
.page {
  padding-bottom: 86px;
}

/* Stories row */
.stories-row {
  padding: 12px 12px 6px;
  overflow-x: auto;
  display: flex;
  gap: 10px;
  border-bottom: 1px solid var(--border);
}

.stories-row::-webkit-scrollbar { height: 6px; }
.stories-row::-webkit-scrollbar-thumb {
  background: rgba(0,0,0,0.15);
  border-radius: 999px;
}

.story-item {
  width: 74px;
  flex: 0 0 auto;
  text-align: center;
  cursor: pointer;
}

.story-avatar {
  width: 56px;
  height: 56px;
  margin: 0 auto 6px;
  border-radius: 999px;
  padding: 2px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
}

.story-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 999px;
  border: 2px solid var(--bg-primary);
  background: var(--bg-primary);
}

.story-username {
  font-size: 11px;
  color: var(--text-secondary);
  display: block;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Category pills (if your index.html has them) */
.category-bar {
  display: flex;
  gap: 8px;
  padding: 12px;
  overflow-x: auto;
}

.category-pill {
  flex: 0 0 auto;
  border: 1px solid var(--border);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 13px;
  cursor: pointer;
  transition: 0.2s;
}

.category-pill.active {
  background: rgba(var(--primary-rgb), 0.15);
  border-color: rgba(var(--primary-rgb), 0.35);
  color: var(--text-primary);
}

/* Feed */
.feed {
  display: grid;
  gap: 12px;
  padding: 12px;
}

/* Loading/Empty */
.state-box {
  padding: 24px 16px;
  text-align: center;
  color: var(--text-secondary);
}

.state-box i {
  font-size: 38px;
  color: var(--text-tertiary);
  margin-bottom: 10px;
}

/* Post card */
.post-card {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.post-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 12px 10px;
  gap: 10px;
}

.post-user {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.avatar-wrapper {
  width: 42px;
  height: 42px;
  border-radius: 999px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-secondary);
  flex: 0 0 auto;
}

.avatar-wrapper .avatar {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.user-info { min-width: 0; }
.user-line {
  display: flex;
  align-items: baseline;
  gap: 6px;
  flex-wrap: wrap;
}

.user-name {
  font-weight: 800;
  font-size: 14px;
  color: var(--text-primary);
}

.user-username {
  font-size: 13px;
  color: var(--text-tertiary);
}

.user-meta {
  font-size: 12px;
  color: var(--text-secondary);
  display: flex;
  gap: 6px;
  margin-top: 2px;
}

/* Media */
.post-media {
  width: 100%;
  background: var(--bg-secondary);
}

.post-media img,
.post-media video {
  width: 100%;
  max-height: 520px;
  object-fit: cover;
  display: block;
  background: #000;
}

.lesson-media video {
  aspect-ratio: 9 / 16;
  max-height: min(78vh, 720px);
  object-fit: cover;
}

.sponsored-reel-card {
  overflow: hidden;
  border-color: rgba(249, 115, 22, 0.28);
}

.sponsored-reel-header {
  background: color-mix(in srgb, var(--bg-primary) 88%, rgba(249, 115, 22, 0.16));
}

.sponsored-avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  color: white;
  background: linear-gradient(135deg, var(--accent), var(--primary));
}

.sponsored-reel-stage {
  min-height: clamp(420px, 72vh, 700px);
  display: grid;
  grid-template-rows: auto minmax(240px, 1fr);
  background:
    linear-gradient(180deg, rgba(17, 24, 39, 0.12), rgba(17, 24, 39, 0.68)),
    linear-gradient(135deg, #2563eb, #0f766e 55%, #f97316);
  color: white;
}

.sponsored-reel-copy {
  padding: 22px 18px 12px;
}

.sponsored-reel-copy h3 {
  margin: 8px 0 6px;
  font-size: clamp(26px, 7vw, 44px);
  line-height: 1;
  max-width: 560px;
}

.sponsored-reel-copy p {
  max-width: 520px;
  color: rgba(255, 255, 255, 0.86);
}

.sponsored-ad-frame {
  margin: 14px;
  min-height: 260px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.92);
  color: var(--text-primary);
  display: grid;
  place-items: center;
  overflow: hidden;
  position: relative;
}

.sponsored-ad-frame .adsbygoogle {
  width: 100%;
  min-height: 260px;
}

.ad-fallback {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 10px;
  padding: 22px;
  text-align: center;
  color: var(--text-secondary);
  pointer-events: none;
}

.ad-fallback i {
  font-size: 36px;
  color: var(--accent);
}

.ad-requested .ad-fallback {
  opacity: 0;
}

.note-media {
  padding: 14px;
  background: var(--bg-secondary);
}

.note-block {
  border: 1px solid var(--border);
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  padding: 14px;
}

.note-title {
  font-weight: 900;
  margin-bottom: 8px;
}

.note-text {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.55;
  white-space: pre-line;
}

/* Actions */
.post-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 10px;
}

.left-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}

.post-actions .btn-icon {
  font-size: 18px;
  padding: 8px;
  border-radius: 10px;
}

.post-actions .btn-icon:hover {
  background: var(--bg-secondary);
}

/* Stats + caption */
.post-stats {
  display: flex;
  gap: 12px;
  padding: 0 12px 10px;
  color: var(--text-secondary);
  font-size: 13px;
}

.comments-modal {
  position: fixed;
  inset: 0;
  z-index: 3000;
  display: none;
  align-items: flex-end;
  justify-content: center;
  background: rgba(15, 23, 42, 0.48);
  padding: 18px;
}

.comments-modal.show {
  display: flex;
}

.comments-panel {
  width: min(620px, 100%);
  max-height: min(760px, 88vh);
  display: grid;
  grid-template-rows: auto auto minmax(180px, 1fr) auto;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-primary);
  box-shadow: var(--shadow-lg);
}

.comments-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
}

.comments-header h3 {
  margin: 2px 0 0;
  font-size: 18px;
}

.comments-kicker {
  color: var(--secondary);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.comments-lesson {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 13px;
}

.comments-lesson strong {
  color: var(--text-primary);
}

.comments-list {
  overflow-y: auto;
  padding: 12px 16px;
  display: grid;
  align-content: start;
  gap: 12px;
}

.comments-empty {
  min-height: 160px;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 8px;
  color: var(--text-secondary);
  text-align: center;
}

.comments-empty i {
  font-size: 28px;
  color: var(--text-tertiary);
}

.comment-item {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 10px;
}

.comment-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  object-fit: cover;
  background: var(--bg-secondary);
}

.comment-body {
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-secondary);
}

.comment-meta {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 4px;
  color: var(--text-tertiary);
  font-size: 12px;
}

.comment-author {
  border: 0;
  padding: 0;
  background: transparent;
  color: var(--text-primary);
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

.comment-body p {
  color: var(--text-primary);
  font-size: 14px;
  white-space: pre-line;
}

.comments-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
  padding: 12px 16px;
  border-top: 1px solid var(--border);
  background: var(--bg-primary);
}

.comments-form input {
  min-width: 0;
}

@media (max-width: 640px) {
  .comments-modal {
    padding: 0;
  }

  .comments-panel {
    max-height: 92vh;
    border-radius: 8px 8px 0 0;
    border-bottom: 0;
  }

  .comments-form {
    grid-template-columns: 1fr;
  }
}

.post-caption {
  padding: 0 12px 14px;
  display: grid;
  gap: 6px;
}

.post-title {
  font-weight: 800;
  font-size: 14px;
}

.post-text {
  color: var(--text-secondary);
  font-size: 14px;
}

/* Double-tap heart overlay (if you have #doubleTapHeart in index.html) */
#doubleTapHeart {
  position: fixed;
  left: 50%;
  top: 45%;
  transform: translate(-50%, -50%);
  font-size: 90px;
  color: rgba(255, 255, 255, 0.95);
  text-shadow: 0 10px 30px rgba(0,0,0,0.25);
  z-index: 99999;
  opacity: 0;
  pointer-events: none;
}

#doubleTapHeart.active {
  animation: popHeart 0.55s ease;
}

@keyframes popHeart {
  0% { transform: translate(-50%, -50%) scale(0.8); opacity: 0; }
  30% { transform: translate(-50%, -50%) scale(1.12); opacity: 1; }
  100% { transform: translate(-50%, -50%) scale(1.0); opacity: 0; }
}

/* =========================================
   TOPTIP LEARNING FEED
========================================= */

body {
  background:
    linear-gradient(180deg, rgba(37, 99, 235, 0.05), transparent 240px),
    var(--bg-primary);
  overflow-x: hidden;
}

.app-header {
  min-height: 62px;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: color-mix(in srgb, var(--bg-primary) 92%, transparent);
}

.brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  background: linear-gradient(135deg, #2563eb, #0f766e 52%, #f97316);
  box-shadow: 0 8px 18px rgba(37, 99, 235, 0.22);
  flex: 0 0 auto;
}

.logo {
  font-size: 21px;
  font-weight: 900;
  line-height: 1;
  color: var(--text-primary);
  letter-spacing: 0;
}

.brand-subtitle {
  display: block;
  margin-top: 3px;
  color: var(--text-secondary);
  font-size: 12px;
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  flex: 0 0 auto;
}

.learning-toolbar {
  max-width: 680px;
  margin: 0 auto;
  padding: 18px 16px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.learning-toolbar h2 {
  margin: 2px 0 0;
  font-size: clamp(22px, 4vw, 34px);
  line-height: 1.08;
  letter-spacing: 0;
  max-width: 520px;
}

.learning-toolbar-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
}

.eyebrow {
  color: var(--secondary);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.open-sources-strip {
  max-width: 720px;
  margin: 0 auto;
  padding: 14px 16px 4px;
}

.open-sources-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.open-sources-heading h2 {
  margin-top: 2px;
  font-size: 18px;
  line-height: 1.2;
}

.source-view-all,
.source-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-weight: 800;
  font-size: 13px;
}

.open-sources-rail {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding-bottom: 8px;
  scrollbar-width: none;
}

.open-sources-rail::-webkit-scrollbar {
  display: none;
}

.source-chip-card {
  flex: 0 0 218px;
  display: grid;
  gap: 8px;
  min-height: 126px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg-secondary);
}

.source-chip-card:hover {
  border-color: rgba(var(--primary-rgb), 0.34);
}

.source-chip-top,
.source-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.source-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(var(--primary-rgb), 0.11);
  color: var(--primary);
}

.source-category {
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px 8px;
  color: var(--text-secondary);
  font-size: 11px;
  font-weight: 800;
}

.source-chip-card strong {
  font-size: 14px;
  line-height: 1.2;
}

.source-chip-card p,
.source-card p {
  color: var(--text-secondary);
  font-size: 13px;
  line-height: 1.45;
}

.daily-forex-strip {
  max-width: 720px;
  margin: 0 auto;
  padding: 6px 16px 12px;
}

.daily-forex-card {
  display: grid;
  gap: 8px;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg-primary);
  box-shadow: var(--shadow);
}

.daily-forex-card h2 {
  font-size: 18px;
  line-height: 1.22;
}

.daily-forex-card p {
  color: var(--text-secondary);
  font-size: 13px;
}

.humanity-daily-card {
  border-color: rgba(15, 118, 110, 0.24);
}

.sources-page {
  max-width: 960px;
  margin: 0 auto;
  padding: 18px 16px 96px;
}

.sources-hero {
  max-width: 680px;
  padding: 12px 0 18px;
}

.sources-hero h1 {
  margin: 4px 0 8px;
  font-size: clamp(28px, 5vw, 42px);
  line-height: 1.05;
  letter-spacing: 0;
}

.sources-hero p {
  max-width: 640px;
  color: var(--text-secondary);
}

.source-filter-bar {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 4px 0 14px;
  scrollbar-width: none;
}

.source-filter-bar::-webkit-scrollbar {
  display: none;
}

.source-filter {
  flex: 0 0 auto;
  min-height: 34px;
  padding: 7px 13px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-weight: 800;
  cursor: pointer;
}

.source-filter.active {
  background: var(--text-primary);
  color: var(--bg-primary);
  border-color: var(--text-primary);
}

.source-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.source-card {
  display: grid;
  align-content: start;
  gap: 10px;
  min-height: 244px;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg-primary);
  box-shadow: var(--shadow);
}

.source-card h2 {
  font-size: 18px;
  line-height: 1.2;
}

.source-tip-list {
  display: grid;
  gap: 6px;
}

.source-tip-list span {
  display: flex;
  gap: 6px;
  color: var(--text-secondary);
  font-size: 12px;
  line-height: 1.35;
}

.source-tip-list span::before {
  content: "";
  width: 6px;
  height: 6px;
  margin-top: 5px;
  border-radius: 50%;
  background: var(--secondary);
  flex: 0 0 auto;
}

.lesson-source {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  width: fit-content;
  max-width: 100%;
  margin-top: 10px;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  color: var(--primary);
  font-size: 13px;
  font-weight: 800;
}

.lesson-source span {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.forex-update-page {
  max-width: 960px;
  margin: 0 auto;
  padding: 18px 16px 96px;
}

.forex-update-hero {
  max-width: 760px;
  padding: 12px 0 18px;
}

.forex-update-hero h1 {
  margin: 4px 0 10px;
  font-size: clamp(28px, 5vw, 44px);
  line-height: 1.05;
  letter-spacing: 0;
}

.forex-update-hero p {
  max-width: 720px;
  color: var(--text-secondary);
}

.daily-live-status {
  width: fit-content;
  margin-top: 12px;
  padding: 7px 10px;
  border: 1px solid rgba(var(--primary-rgb), 0.22);
  border-radius: 8px;
  background: rgba(var(--primary-rgb), 0.08);
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 800;
}

.daily-live-source {
  margin-top: 10px;
}

.live-source-link {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  width: 100%;
  padding: 10px 12px;
  border: 1px solid rgba(15, 118, 110, 0.26);
  border-radius: 8px;
  background: rgba(15, 118, 110, 0.08);
  color: var(--text-primary);
  font-size: 13px;
  font-weight: 850;
}

.forex-update-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.forex-update-card,
.forex-action-panel,
.forex-sources {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg-primary);
  box-shadow: var(--shadow);
}

.forex-update-card {
  display: grid;
  align-content: start;
  gap: 10px;
  min-height: 250px;
  padding: 14px;
}

.forex-update-card h2,
.forex-action-panel h2 {
  font-size: 18px;
  line-height: 1.2;
}

.forex-update-card p,
.forex-practice-list,
.forex-source-links a {
  color: var(--text-secondary);
  font-size: 13px;
}

.forex-action-panel,
.forex-sources {
  margin-top: 14px;
  padding: 16px;
}

.forex-practice-list {
  display: grid;
  gap: 8px;
  margin: 12px 0 0;
  padding-left: 20px;
}

.forex-source-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-top: 10px;
}

.forex-source-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  font-weight: 800;
}

.humanity-page {
  max-width: 980px;
  margin: 0 auto;
  padding: 18px 16px 96px;
}

.humanity-hero {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0 18px;
}

.humanity-hero div {
  max-width: 720px;
}

.humanity-hero h1 {
  margin: 4px 0 10px;
  font-size: clamp(28px, 5vw, 44px);
  line-height: 1.05;
  letter-spacing: 0;
}

.humanity-hero p,
.humanity-description p {
  color: var(--text-secondary);
}

.humanity-layout {
  display: grid;
  grid-template-columns: minmax(260px, 0.9fr) minmax(0, 1.1fr);
  gap: 14px;
  align-items: stretch;
}

.humanity-reel,
.humanity-description {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg-primary);
  box-shadow: var(--shadow);
}

.humanity-reel {
  padding: 12px;
}

.humanity-reel-stage {
  position: relative;
  min-height: 520px;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: #101827;
  color: #fff;
}

.humanity-reel-stage::before {
  content: "";
  position: absolute;
  inset: 12px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius-lg);
  pointer-events: none;
  z-index: 2;
}

.humanity-reel-frame {
  position: absolute;
  inset: 0;
  display: grid;
  align-content: end;
  gap: 12px;
  padding: 34px 28px;
  opacity: 0;
  animation: humanityReel 16s infinite;
}

.humanity-reel-frame span {
  width: fit-content;
  padding: 5px 9px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.16);
  font-size: 12px;
  font-weight: 800;
}

.humanity-reel-frame strong {
  max-width: 320px;
  font-size: clamp(26px, 6vw, 46px);
  line-height: 1;
  letter-spacing: 0;
}

.humanity-reel-frame p {
  max-width: 330px;
  color: rgba(255, 255, 255, 0.84);
  font-size: 15px;
  line-height: 1.45;
}

.frame-one {
  background:
    linear-gradient(145deg, rgba(15, 118, 110, 0.9), rgba(37, 99, 235, 0.72)),
    radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.22), transparent 32%);
}

.frame-two {
  animation-delay: 4s;
  background:
    linear-gradient(145deg, rgba(37, 99, 235, 0.92), rgba(17, 24, 39, 0.9)),
    radial-gradient(circle at 80% 18%, rgba(16, 185, 129, 0.34), transparent 30%);
}

.frame-three {
  animation-delay: 8s;
  background:
    linear-gradient(145deg, rgba(249, 115, 22, 0.82), rgba(15, 118, 110, 0.92)),
    radial-gradient(circle at 22% 76%, rgba(255, 255, 255, 0.18), transparent 34%);
}

.frame-four {
  animation-delay: 12s;
  background:
    linear-gradient(145deg, rgba(17, 24, 39, 0.94), rgba(37, 99, 235, 0.84)),
    radial-gradient(circle at 75% 74%, rgba(255, 255, 255, 0.2), transparent 34%);
}

.humanity-description {
  display: grid;
  align-content: start;
  gap: 12px;
  padding: 16px;
}

.humanity-description h2 {
  font-size: 22px;
  line-height: 1.15;
}

.humanity-note {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-size: 13px;
}

.humanity-note i {
  margin-top: 2px;
  color: var(--secondary);
}

@keyframes humanityReel {
  0% {
    opacity: 0;
    transform: scale(1.02);
  }
  5%,
  24% {
    opacity: 1;
    transform: scale(1);
  }
  30%,
  100% {
    opacity: 0;
    transform: scale(0.98);
  }
}

.stories-container {
  border-block: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg-primary) 94%, transparent);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.stories-container::-webkit-scrollbar {
  display: none;
}

.stories-wrapper {
  display: flex;
  gap: 14px;
  max-width: 720px;
  min-width: max-content;
  margin: 0 auto;
  padding: 14px 16px 12px;
}

button.story-item,
.story-item {
  width: 76px;
  flex: 0 0 auto;
  border: 0;
  background: transparent;
  padding: 0;
  text-align: center;
  color: inherit;
  cursor: pointer;
  font: inherit;
}

.story-item:focus-visible {
  outline: 2px solid rgba(var(--primary-rgb), 0.45);
  outline-offset: 4px;
  border-radius: 8px;
}

.story-topic {
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  border: 0;
}

.story-topic i {
  font-size: 21px;
}

.category-filter {
  position: sticky;
  top: 62px;
  z-index: 900;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 12px max(16px, calc((100vw - 680px) / 2));
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg-primary) 94%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  scrollbar-width: none;
}

.category-filter::-webkit-scrollbar {
  display: none;
}

.category-pill {
  flex: 0 0 auto;
  border: 1px solid var(--border);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  min-height: 36px;
  padding: 8px 13px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, color 0.2s, transform 0.2s;
}

.category-pill:hover {
  transform: translateY(-1px);
  border-color: rgba(var(--primary-rgb), 0.28);
}

.category-pill.active {
  background: var(--text-primary);
  border-color: var(--text-primary);
  color: var(--bg-primary);
}

.feed-container {
  max-width: 680px;
  margin: 0 auto;
  padding: 12px 12px 96px;
}

.feed {
  display: grid;
  gap: 16px;
  padding: 0;
}

.feed-loading,
.empty-feed {
  text-align: center;
  padding: 44px 20px;
  color: var(--text-secondary);
}

.feed-loading i,
.empty-feed i {
  display: block;
  margin-bottom: 12px;
  color: var(--text-tertiary);
  font-size: 34px;
}

.demo-notice {
  align-items: center;
  gap: 8px;
  margin: 0 0 12px;
  padding: 10px 12px;
  border: 1px solid rgba(15, 118, 110, 0.25);
  border-radius: 8px;
  background: rgba(15, 118, 110, 0.08);
  color: var(--text-secondary);
  font-size: 13px;
}

.demo-notice i {
  color: var(--secondary);
}

.lesson-card {
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-primary);
  box-shadow: var(--shadow);
}

.post-header {
  padding: 12px 12px 10px;
}

.avatar-wrapper {
  border-radius: 50%;
}

.avatar-initials {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  background: linear-gradient(135deg, #2563eb, #0f766e);
  font-size: 13px;
  font-weight: 900;
}

.user-meta {
  gap: 7px;
}

.user-meta span + span::before {
  content: "";
  display: inline-block;
  width: 4px;
  height: 4px;
  margin-right: 7px;
  border-radius: 50%;
  background: var(--text-tertiary);
  vertical-align: middle;
}

.lesson-media {
  background: var(--bg-secondary);
}

.lesson-media img,
.lesson-media video {
  width: 100%;
  aspect-ratio: 4 / 3;
  max-height: 560px;
  object-fit: cover;
  display: block;
  background: #030712;
}

.lesson-poster {
  min-height: 330px;
  aspect-ratio: 4 / 3;
  display: grid;
  align-content: end;
  gap: 12px;
  padding: 24px;
  color: #fff;
  position: relative;
  isolation: isolate;
}

.lesson-poster::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(0, 0, 0, 0.04), rgba(0, 0, 0, 0.3)),
    repeating-linear-gradient(135deg, rgba(255, 255, 255, 0.12) 0 1px, transparent 1px 16px);
  z-index: -1;
}

.lesson-poster i {
  width: 62px;
  height: 62px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.18);
  font-size: 27px;
}

.lesson-poster h3 {
  max-width: 520px;
  margin: 0;
  font-size: clamp(28px, 7vw, 48px);
  line-height: 1;
  letter-spacing: 0;
}

.lesson-poster p {
  font-weight: 800;
  opacity: 0.9;
}

.lesson-poster-kicker {
  justify-self: start;
  border: 1px solid rgba(255, 255, 255, 0.44);
  border-radius: 999px;
  padding: 6px 10px;
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.lesson-reel-poster {
  overflow: hidden;
}

.lesson-reel-poster::after {
  content: "";
  position: absolute;
  inset: auto 18px 18px auto;
  width: 92px;
  height: 160px;
  border: 2px solid rgba(255, 255, 255, 0.45);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.08);
  transform: rotate(8deg);
}

.reel-preview-dots {
  display: flex;
  gap: 5px;
  margin-top: 4px;
}

.reel-preview-dots span {
  width: 24px;
  height: 4px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.4);
  overflow: hidden;
  position: relative;
}

.reel-preview-dots span::after {
  content: "";
  position: absolute;
  inset: 0;
  background: #fff;
  transform: translateX(-100%);
  animation: reelDot 1.8s ease-in-out infinite;
  animation-delay: var(--delay);
}

@keyframes reelDot {
  0%, 18% { transform: translateX(-100%); }
  55% { transform: translateX(0); }
  100% { transform: translateX(110%); }
}

.poster-study { background: linear-gradient(135deg, #2563eb, #0f766e); }
.poster-coding { background: linear-gradient(135deg, #111827, #2563eb); }
.poster-finance { background: linear-gradient(135deg, #0f766e, #84cc16); }
.poster-health { background: linear-gradient(135deg, #e11d48, #f97316); }
.poster-language { background: linear-gradient(135deg, #7c2d12, #2563eb); }
.poster-science { background: linear-gradient(135deg, #0f172a, #0891b2); }
.poster-design { background: linear-gradient(135deg, #be123c, #7c3aed); }
.poster-general { background: linear-gradient(135deg, #334155, #0f766e); }

.lesson-content {
  display: grid;
  gap: 10px;
  padding: 14px 14px 8px;
}

.lesson-badges,
.lesson-tags {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 7px;
}

.lesson-badges span,
.lesson-tags span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 28px;
  padding: 5px 9px;
  border-radius: 999px;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 800;
}

.lesson-badges i {
  color: var(--secondary);
}

.lesson-title {
  margin: 0;
  color: var(--text-primary);
  font-size: 22px;
  line-height: 1.16;
  letter-spacing: 0;
}

.lesson-description {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.55;
}

.lesson-steps {
  display: grid;
  gap: 9px;
  margin: 2px 0 0;
  padding: 0;
  list-style: none;
}

.lesson-steps li {
  display: grid;
  grid-template-columns: 30px 1fr;
  gap: 10px;
  align-items: start;
}

.lesson-steps li span {
  width: 30px;
  height: 30px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(var(--primary-rgb), 0.12);
  color: var(--primary);
  font-size: 13px;
  font-weight: 900;
}

.lesson-steps p,
.lesson-note {
  color: var(--text-primary);
  font-size: 14px;
  line-height: 1.5;
}

.lesson-note {
  padding: 10px 0 0;
  border-top: 1px solid var(--border);
  white-space: pre-line;
}

.lesson-takeaway {
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: 8px;
  align-items: start;
  color: var(--text-primary);
  background: rgba(249, 115, 22, 0.1);
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 14px;
  line-height: 1.45;
}

.lesson-takeaway i {
  color: var(--accent);
  margin-top: 2px;
}

.post-actions {
  padding: 8px 10px 4px;
}

.post-actions .btn-icon {
  border-radius: 8px;
}

.like-btn .fas,
.save-btn .fas {
  color: #e11d48;
}

.save-btn .fas {
  color: var(--primary);
}

.post-stats {
  flex-wrap: wrap;
  padding: 0 14px 10px;
  font-size: 13px;
}

.lesson-footer {
  display: grid;
  gap: 8px;
  padding: 0 14px 14px;
}

.lesson-cta {
  width: 100%;
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-secondary);
  color: var(--text-primary);
  cursor: pointer;
  font: inherit;
  font-size: 14px;
  font-weight: 850;
}

.lesson-cta:hover {
  background: var(--bg-tertiary);
}

.lesson-cta.is-learned {
  background: rgba(15, 118, 110, 0.12);
  border-color: rgba(15, 118, 110, 0.3);
  color: var(--secondary);
}

.ai-explain-btn {
  background: rgba(var(--primary-rgb), 0.1);
  border-color: rgba(var(--primary-rgb), 0.24);
  color: var(--primary);
}

.reel-btn {
  background: rgba(249, 115, 22, 0.12);
  border-color: rgba(249, 115, 22, 0.32);
  color: #c2410c;
}

.reel-modal {
  position: fixed;
  inset: 0;
  z-index: 3200;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 16px;
  background: rgba(2, 6, 23, 0.82);
}

.reel-modal.show {
  display: flex;
}

.reel-phone {
  width: min(430px, 100%);
  height: min(820px, 94vh);
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  gap: 12px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 28px;
  background: #020617;
  color: #fff;
  overflow: hidden;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.45);
  padding: 14px;
}

.reel-progress {
  display: flex;
  gap: 5px;
}

.reel-progress span {
  flex: 1;
  height: 4px;
  border-radius: 999px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.25);
}

.reel-progress i {
  display: block;
  width: 0;
  height: 100%;
  background: #fff;
}

.reel-progress span.done i {
  width: 100%;
}

.reel-progress span.active i {
  animation: reelProgress var(--frame-duration, 4200ms) linear forwards;
}

@keyframes reelProgress {
  from { width: 0; }
  to { width: 100%; }
}

.reel-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  padding: 2px 2px 0;
}

.reel-kicker {
  color: rgba(255, 255, 255, 0.68);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.reel-post-title {
  margin-top: 3px;
  color: #fff;
  font-size: 18px;
  line-height: 1.2;
  letter-spacing: 0;
}

.reel-icon-btn,
.reel-play-btn {
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  cursor: pointer;
  font: inherit;
}

.reel-icon-btn {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
}

.reel-frame-shell {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 0;
}

.reel-frame-card {
  width: 100%;
  min-height: min(500px, 62vh);
  display: grid;
  align-content: center;
  justify-items: start;
  gap: 18px;
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border-radius: 24px;
  padding: 28px;
  color: #fff;
  animation: reelCardIn 0.42s ease both;
}

.reel-frame-card::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(circle at 20% 20%, rgba(255,255,255,0.24), transparent 28%),
    repeating-linear-gradient(135deg, rgba(255,255,255,0.12) 0 1px, transparent 1px 18px);
}

@keyframes reelCardIn {
  from { transform: translateY(20px) scale(0.98); opacity: 0; }
  to { transform: translateY(0) scale(1); opacity: 1; }
}

.reel-frame-label {
  border: 1px solid rgba(255, 255, 255, 0.42);
  border-radius: 999px;
  padding: 7px 11px;
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.reel-frame-icon {
  width: 70px;
  height: 70px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.18);
  font-size: 30px;
}

.reel-frame-title {
  margin: 0;
  color: #fff;
  font-size: clamp(30px, 8vw, 48px);
  line-height: 1;
  letter-spacing: 0;
}

.reel-frame-body {
  color: rgba(255, 255, 255, 0.9);
  font-size: 17px;
  line-height: 1.45;
}

.reel-controls {
  display: grid;
  grid-template-columns: 44px 1fr 44px;
  align-items: center;
  gap: 10px;
  padding-bottom: 2px;
}

.reel-play-btn {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 999px;
  font-weight: 850;
}

.ai-modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 3000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 18px;
  background: rgba(15, 23, 42, 0.58);
}

.ai-modal-backdrop.show {
  display: flex;
}

.ai-modal {
  width: min(620px, 100%);
  max-height: min(760px, 92vh);
  overflow: auto;
  display: grid;
  gap: 14px;
  background: var(--bg-primary);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: var(--shadow-lg);
  padding: 16px;
}

.ai-modal-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 12px;
}

.ai-modal-header h2 {
  margin: 2px 0 0;
  font-size: 22px;
  letter-spacing: 0;
}

.ai-lesson-summary {
  display: grid;
  gap: 4px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-secondary);
}

.ai-lesson-summary h3 {
  font-size: 16px;
  letter-spacing: 0;
}

.ai-context,
.ai-source-note {
  color: var(--text-secondary);
  font-size: 13px;
}

.ai-mode-switch {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.ai-mode-btn {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  cursor: pointer;
  font: inherit;
  font-size: 13px;
  font-weight: 850;
}

.ai-mode-btn.active {
  background: var(--text-primary);
  border-color: var(--text-primary);
  color: var(--bg-primary);
}

.ai-question-label {
  color: var(--text-primary);
  font-weight: 800;
}

.ai-question-input {
  resize: vertical;
  min-height: 82px;
  background: var(--bg-secondary);
}

.ai-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}

.ai-output {
  min-height: 150px;
  display: grid;
  gap: 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-secondary);
  padding: 14px;
  color: var(--text-primary);
  font-size: 14px;
  line-height: 1.55;
}

.ai-output p {
  margin: 0;
}

.ai-loading {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
}

.upload-fab {
  position: fixed;
  right: 20px;
  bottom: 88px;
  z-index: 980;
  width: 56px;
  height: 56px;
  border: 0;
  border-radius: 50%;
  background: linear-gradient(135deg, #2563eb, #0f766e);
  color: #fff;
  box-shadow: 0 12px 28px rgba(37, 99, 235, 0.28);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
}

.upload-fab:hover {
  transform: translateY(-2px);
}

.double-tap-heart {
  position: fixed;
  left: 50%;
  top: 45%;
  z-index: 9999;
  pointer-events: none;
  transform: translate(-50%, -50%);
  color: #fff;
  font-size: 78px;
  opacity: 0;
  text-shadow: 0 12px 28px rgba(0, 0, 0, 0.35);
}

.double-tap-heart.active {
  animation: popHeart 0.55s ease;
}

.app-toast {
  position: fixed;
  left: 50%;
  bottom: 86px;
  z-index: 5000;
  transform: translateX(-50%) translateY(12px);
  max-width: min(92vw, 420px);
  padding: 10px 14px;
  border-radius: 999px;
  background: var(--text-primary);
  color: var(--bg-primary);
  box-shadow: var(--shadow-lg);
  font-size: 13px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
}

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

.app-toast[data-type="success"] {
  background: #0f766e;
}

.app-toast[data-type="error"] {
  background: #dc2626;
}

@media (max-width: 900px) {
  .source-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .forex-update-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (max-width: 640px) {
  .app-header {
    min-height: 58px;
  }

  .brand-subtitle {
    display: none;
  }

  .learning-toolbar {
    align-items: flex-start;
    padding-top: 14px;
  }

  .learning-toolbar-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .learning-toolbar h2 {
    font-size: 24px;
  }

  .learning-toolbar .btn {
    min-width: 44px;
    padding-inline: 12px;
  }

  .category-filter {
    top: 58px;
  }

  .open-sources-heading {
    align-items: flex-start;
  }

  .source-chip-card {
    flex-basis: 190px;
  }

  .sources-hero h1 {
    font-size: 28px;
  }

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

  .forex-update-grid,
  .forex-source-links {
    grid-template-columns: 1fr;
  }

  .forex-update-card {
    min-height: auto;
  }

  .humanity-hero {
    display: grid;
  }

  .humanity-reel-stage {
    min-height: 460px;
  }

  .humanity-reel-frame {
    padding: 30px 24px;
  }

  .lesson-poster {
    min-height: 300px;
    padding: 20px;
  }

  .lesson-title {
    font-size: 20px;
  }

  .post-stats {
    gap: 9px;
  }
}