@font-face {
  font-family: "IBM Plex Sans";
  src: url("../Fermat/fonts/IBM_Plex_Sans/IBMPlexSans-VariableFont_wdth,wght.ttf") format("truetype");
  font-weight: 100 900;
  font-display: swap;
}

@font-face {
  font-family: "Julius Sans One";
  src: url("../Fermat/fonts/Julius_Sans_One/JuliusSansOne-Regular.ttf") format("truetype");
  font-weight: 400;
  font-display: swap;
}

:root {
  --bg: #0e0e10;
  --surface: #f2f2f2;
  --surface-alt: #1a1a1d;
  --surface-soft: #202027;
  --primary: #ffa85c;
  --accent: #6d5a7a;
  --text: #ececf1;
  --text-dim: #c8c8cf;
  --text-dark: #1b1b1f;
  --border: rgba(255, 255, 255, 0.08);
  --shadow: rgba(0, 0, 0, 0.35);
}

body[data-theme="light"] {
  --bg: #f4f1ea;
  --surface: #ffffff;
  --surface-alt: #e8e3dd;
  --surface-soft: #d9d4ce;
  --text: #1b1b1f;
  --text-dim: #5c5c63;
  --text-dark: #1b1b1f;
  background: radial-gradient(circle at 20% 20%, rgba(255, 168, 92, 0.2), transparent 40%),
    radial-gradient(circle at 80% 10%, rgba(109, 90, 122, 0.12), transparent 45%),
    linear-gradient(140deg, #f6f2ea 0%, #efe8df 60%, #f7f0e8 100%);
}

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

* {
  scrollbar-width: thin;
  scrollbar-color: var(--primary) rgba(255, 255, 255, 0.08);
}

*::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

*::-webkit-scrollbar-thumb {
  background: linear-gradient(90deg, var(--primary), rgba(255, 205, 156, 0.95));
  border-radius: 999px;
  border: 2px solid rgba(0, 0, 0, 0.2);
}

*::-webkit-scrollbar-thumb:horizontal {
  background: linear-gradient(90deg, var(--primary), var(--accent));
}

*::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.04);
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

*::-webkit-scrollbar-track:horizontal {
  background: rgba(255, 255, 255, 0.02);
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
  color: var(--text);
  background: radial-gradient(circle at 20% 20%, rgba(255, 168, 92, 0.16), transparent 40%),
    radial-gradient(circle at 80% 10%, rgba(109, 90, 122, 0.18), transparent 45%),
    linear-gradient(140deg, #0b0b0d 0%, #1a1a1f 45%, #0f0f12 100%);
  overflow-x: hidden;
}

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

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

.ambient {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.orb {
  position: absolute;
  border-radius: 999px;
  filter: blur(30px);
  opacity: 0.6;
  animation: float 18s ease-in-out infinite;
}

.orb-1 {
  width: 240px;
  height: 240px;
  background: rgba(255, 168, 92, 0.35);
  top: 10%;
  left: 12%;
}

.orb-2 {
  width: 320px;
  height: 320px;
  background: rgba(109, 90, 122, 0.28);
  bottom: 8%;
  right: 10%;
  animation-delay: -6s;
}

.orb-3 {
  width: 160px;
  height: 160px;
  background: rgba(255, 255, 255, 0.08);
  top: 58%;
  left: 65%;
  animation-delay: -12s;
}

.app {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr) 320px;
  gap: 24px;
  padding: 24px;
  min-height: 100vh;
}

.sidebar,
.main-header,
.chat-panel,
.card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: 22px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.28);
}

.sidebar {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  position: sticky;
  top: 20px;
  height: calc(100vh - 40px);
  overflow-y: auto;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.brand-mark {
  font-family: "Julius Sans One", sans-serif;
  letter-spacing: 2px;
  font-size: 22px;
  color: var(--primary);
}

.brand-tag {
  font-size: 11px;
  letter-spacing: 1px;
  text-transform: uppercase;
  background: rgba(255, 168, 92, 0.2);
  color: var(--primary);
  padding: 4px 8px;
  border-radius: 999px;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.nav-item {
  display: block;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 14px;
  font-size: 13px;
  text-align: left;
  cursor: pointer;
  transition: all 0.2s ease;
}

.nav-item.is-active {
  background: var(--primary);
  color: var(--text-dark);
  border-color: transparent;
}

.sidebar-block {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.block-title {
  font-size: 12px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.lesson-pill {
  display: block;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text);
  padding: 8px 10px;
  border-radius: 12px;
  cursor: pointer;
  text-align: left;
}

.lesson-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sidebar-footer {
  margin-top: auto;
}

.settings-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255, 255, 255, 0.06);
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.settings-row select {
  padding: 6px 10px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
}

.main {
  display: flex;
  flex-direction: column;
  gap: 18px;
  min-width: 0;
}

.main-header {
  padding: 18px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.headline {
  font-size: 26px;
  font-weight: 600;
}

.muted {
  color: var(--text-dim);
  margin: 6px 0 0;
  font-size: 14px;
}

.profile-card {
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(255, 255, 255, 0.06);
  padding: 10px 14px;
  border-radius: 16px;
}

.avatar-circle {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: var(--primary);
}

.profile-name {
  font-weight: 600;
}

.profile-stats {
  display: flex;
  gap: 12px;
  font-size: 12px;
  margin-top: 4px;
  color: var(--text-dim);
}

.profile-stats strong {
  background: var(--primary);
  color: var(--text-dark);
  padding: 2px 8px;
  border-radius: 999px;
  margin-right: 4px;
}

.pro-pill {
  display: inline-flex;
  align-items: center;
  background: rgba(109, 90, 122, 0.6);
  padding: 4px 10px;
  border-radius: 10px;
  font-size: 11px;
  letter-spacing: 1px;
  margin-top: 6px;
}

.chat-panel {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 16px;
  min-height: 520px;
}

.limit-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 12px;
  border-radius: 14px;
  background: rgba(255, 168, 92, 0.12);
  border: 1px solid rgba(255, 168, 92, 0.35);
  font-size: 13px;
}

.limit-banner a {
  white-space: nowrap;
}

.chat-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.chat-title {
  font-weight: 600;
  font-size: 16px;
}

.chat-list {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
  overflow-y: auto;
  padding-right: 4px;
}

.bubble {
  max-width: 70%;
  padding: 12px 14px;
  border-radius: 16px;
  font-size: 14px;
  line-height: 1.45;
  animation: bubbleIn 0.25s ease;
}

.bubble.assistant {
  background: var(--surface-soft);
  align-self: flex-start;
}

.bubble.user {
  background: var(--primary);
  color: var(--text-dark);
  align-self: flex-end;
}

.bubble.thinking {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.bubble.thinking .dots {
  display: inline-flex;
  gap: 4px;
}

.bubble.thinking .dots span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--text-dim);
  animation: dotPulse 1s infinite ease-in-out;
}

.bubble.thinking .dots span:nth-child(2) {
  animation-delay: 0.2s;
}

.bubble.thinking .dots span:nth-child(3) {
  animation-delay: 0.4s;
}

.composer {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 999px;
}

.attachment-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.attachment-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  padding: 6px 10px;
  font-size: 12px;
}

.attachment-chip button {
  border: none;
  background: transparent;
  color: var(--text);
  cursor: pointer;
  font-size: 14px;
}

.podcast-player {
  width: 100%;
}

.composer input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text);
  font-size: 14px;
  outline: none;
}

.composer input:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.clip,
.send {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: none;
  cursor: pointer;
  background: rgba(255, 255, 255, 0.12);
  position: relative;
}

.clip::before {
  content: "";
  position: absolute;
  inset: 10px;
  border: 2px solid var(--text);
  border-radius: 6px;
  transform: rotate(20deg);
}

.send {
  background: var(--primary);
}

.send::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 10px;
  width: 0;
  height: 0;
  border-top: 6px solid transparent;
  border-bottom: 6px solid transparent;
  border-left: 10px solid var(--text-dark);
}

.inspector {
  display: flex;
  flex-direction: column;
  gap: 18px;
  position: sticky;
  top: 20px;
  height: calc(100vh - 40px);
  overflow-y: auto;
}

.card {
  padding: 16px;
}

.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

.metric-card {
  background: rgba(255, 255, 255, 0.06);
  border-radius: 16px;
  padding: 16px;
  border: 1px solid var(--border);
}

.metric-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-dim);
}

.metric-value {
  font-size: 28px;
  font-weight: 700;
  margin-top: 6px;
}

.panel-title {
  font-size: 18px;
  font-weight: 600;
  margin: 8px 0 12px;
}

.card-title {
  font-weight: 600;
  margin-bottom: 12px;
}

.lesson-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.lesson-card {
  background: rgba(255, 255, 255, 0.06);
  border-radius: 16px;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.mini-cta {
  background: var(--primary);
  border: none;
  color: var(--text-dark);
  padding: 8px 12px;
  border-radius: 12px;
  font-weight: 600;
  cursor: pointer;
}

.quiz-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 16px;
  padding: 12px;
  margin-bottom: 10px;
}

.quiz-top {
  font-size: 12px;
  color: var(--primary);
}

.quiz-title {
  font-size: 16px;
  font-weight: 600;
}

.play-btn {
  border: none;
  border-radius: 12px;
  padding: 8px 12px;
  background: rgba(255, 168, 92, 0.25);
  color: var(--primary);
  font-weight: 600;
  cursor: pointer;
}

.todo-section {
  margin-bottom: 12px;
}

.todo-title {
  font-weight: 600;
  margin-bottom: 8px;
}

.todo-section ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.todo-item {
  display: flex;
  align-items: center;
  gap: 10px;
}

.todo-item .check {
  width: 18px;
  height: 18px;
  border: 2px solid var(--accent);
  border-radius: 6px;
}

.todo-item.done .check {
  background: var(--accent);
}

.todo-item .meta {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.todo-item .time {
  font-size: 12px;
  color: var(--text-dim);
}

.quick-add {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.quick-add input,
.quick-add select {
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
}

.card textarea {
  width: 100%;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  resize: vertical;
}

.quick-row {
  display: flex;
  gap: 8px;
  align-items: center;
}

.cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: var(--text-dark);
  border: none;
  padding: 12px 16px;
  border-radius: 14px;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 10px 20px rgba(255, 168, 92, 0.25);
}

.cta.small {
  padding: 10px 14px;
  font-size: 13px;
  box-shadow: none;
}

.ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: var(--text);
  border: 1px solid rgba(255, 255, 255, 0.18);
  padding: 10px 16px;
  border-radius: 12px;
  cursor: pointer;
}

.ghost.is-active {
  background: var(--primary);
  color: var(--text-dark);
  border-color: transparent;
}

.ghost.small {
  padding: 8px 12px;
  font-size: 12px;
}

.auth-links {
  display: flex;
  gap: 8px;
}

.auth-links .cta,
.auth-links .ghost {
  flex: 1;
}

.toggle-row {
  display: flex;
  gap: 10px;
  margin-bottom: 12px;
}

.toggle {
  flex: 1;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  cursor: pointer;
  font-size: 13px;
}

.toggle span {
  display: inline-block;
  margin-left: 6px;
  background: var(--primary);
  color: var(--text-dark);
  padding: 2px 6px;
  border-radius: 999px;
  font-size: 10px;
}

.toggle.is-active {
  background: var(--surface-soft);
  border-color: rgba(255, 255, 255, 0.2);
}

.plan-card {
  background: rgba(255, 255, 255, 0.06);
  border-radius: 18px;
  padding: 16px;
  position: relative;
  overflow: hidden;
}

.plan-card::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 8px;
  background: var(--primary);
}

.plan-name {
  font-weight: 600;
}

.plan-price {
  font-size: 32px;
  font-weight: 700;
}

.plan-features {
  padding: 0;
  margin: 12px 0 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 13px;
  color: var(--text-dim);
}

.feature-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  color: var(--text-dim);
  font-size: 14px;
}

.feature-list li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.feature-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
}

.switch {
  position: relative;
  width: 42px;
  height: 24px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 999px;
  transition: background 0.2s ease;
}

.slider::before {
  content: "";
  position: absolute;
  width: 18px;
  height: 18px;
  left: 3px;
  top: 3px;
  border-radius: 50%;
  background: white;
  transition: transform 0.2s ease;
}

.switch input:checked + .slider {
  background: var(--primary);
}

.switch input:checked + .slider::before {
  transform: translateX(18px);
}

body[data-layout="auth"] .app {
  grid-template-columns: 260px minmax(0, 1fr);
}

body[data-layout="auth"] .inspector {
  display: none;
}

body[data-layout="auth"] .main {
  justify-content: center;
}

.auth-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 24px;
  max-width: 460px;
}

.auth-title {
  font-size: 28px;
  font-weight: 600;
  margin-bottom: 6px;
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 16px;
}

.auth-form label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 12px;
  letter-spacing: 1px;
  color: var(--text-dim);
}

.auth-form input {
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
}

.policy-check {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 12px;
  color: var(--text-dim);
}

.policy-check input {
  margin-top: 2px;
}

.policy-check a {
  color: var(--primary);
}

.auth-footer {
  margin-top: 16px;
  font-size: 13px;
  color: var(--text-dim);
}

#login-error,
#signup-error {
  color: #ffcc9a;
  min-height: 18px;
}

.auth-modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 30;
  padding: 24px;
}

.auth-modal-card {
  width: min(440px, 100%);
  background: rgba(20, 20, 25, 0.95);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 22px;
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.45);
}

.auth-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.auth-modal-actions {
  display: flex;
  gap: 12px;
  margin-top: 16px;
}

.landing {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 64px;
  padding: 28px 28px 60px;
}

.landing-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.landing-brand {
  font-family: "Julius Sans One", sans-serif;
  letter-spacing: 3px;
  font-size: 24px;
  color: var(--primary);
}

.landing-nav {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.landing-nav a {
  font-size: 12px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-dim);
}

.landing-actions {
  display: flex;
  gap: 10px;
  align-items: center;
}

.landing-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 32px;
  align-items: center;
}

.hero-tag {
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--primary);
  font-size: 12px;
  margin-bottom: 12px;
}

.hero-title {
  font-size: 46px;
  line-height: 1.1;
  margin: 0 0 12px;
}

.hero-subtitle {
  color: var(--text-dim);
  font-size: 16px;
  margin: 0;
}

.hero-actions {
  display: flex;
  gap: 12px;
  margin-top: 20px;
  flex-wrap: wrap;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.hero-card {
  position: relative;
  padding: 24px;
  border-radius: 26px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  overflow: hidden;
}

.hero-screen {
  background: rgba(20, 20, 24, 0.9);
  border-radius: 28px;
  padding: 28px 24px;
  position: relative;
  z-index: 1;
  min-height: 320px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.hero-badge {
  font-size: 12px;
  letter-spacing: 2px;
  color: var(--primary);
}

.hero-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--primary);
}

.hero-bubble {
  background: rgba(255, 255, 255, 0.08);
  padding: 14px;
  border-radius: 16px;
}

.hero-input {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  font-size: 13px;
  color: var(--text-dim);
}

.hero-send {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--primary);
  display: inline-block;
  position: relative;
}

.hero-send::after {
  content: "";
  position: absolute;
  left: 9px;
  top: 7px;
  width: 0;
  height: 0;
  border-top: 4px solid transparent;
  border-bottom: 4px solid transparent;
  border-left: 7px solid var(--text-dark);
}

.hero-glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top, rgba(255, 168, 92, 0.35), transparent 60%);
  opacity: 0.6;
}

.mid-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 24px;
  border-radius: 24px;
  background: linear-gradient(120deg, rgba(255, 168, 92, 0.2), rgba(109, 90, 122, 0.2));
  border: 1px solid var(--border);
}

.landing-section {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.section-header h2 {
  margin: 0 0 8px;
  font-size: 28px;
}

.about-grid,
.feature-grid,
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
}

.about-card,
.feature-card,
.store-card,
.pricing-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 18px;
}

.feature-card h3,
.about-card h3,
.store-card h3 {
  margin-top: 0;
}

.store-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
  align-items: stretch;
}

.store-preview {
  display: flex;
  align-items: center;
  justify-content: center;
}

.preview-shell {
  width: min(260px, 100%);
  background: rgba(255, 255, 255, 0.9);
  color: #1b1b1f;
  border-radius: 28px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  position: relative;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
}

.preview-notch {
  width: 60%;
  height: 16px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.15);
  align-self: center;
}

.preview-title {
  font-family: "Julius Sans One", sans-serif;
  letter-spacing: 2px;
  text-align: center;
}

.preview-panel {
  background: #2b2b2f;
  color: #fff;
  border-radius: 16px;
  padding: 14px;
}

.preview-cta {
  align-self: center;
  background: var(--primary);
  color: #1b1b1f;
  padding: 8px 16px;
  border-radius: 999px;
  font-weight: 600;
}

.pricing-card ul {
  padding-left: 18px;
  color: var(--text-dim);
}

.pricing-card.is-featured {
  border-color: rgba(255, 168, 92, 0.45);
  background: rgba(255, 168, 92, 0.08);
}

.pricing-label {
  font-size: 12px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-dim);
}

.pricing-value {
  font-size: 32px;
  font-weight: 700;
  margin: 8px 0 12px;
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.faq-grid details {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 14px;
}

.faq-grid summary {
  cursor: pointer;
  font-weight: 600;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 520px;
}

.contact-form input,
.contact-form textarea {
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
}

.landing-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  border-top: 1px solid var(--border);
  padding-top: 18px;
}

.footer-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--text-dim);
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-18px);
  }
}

@keyframes bubbleIn {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes dotPulse {
  0%,
  100% {
    opacity: 0.35;
  }
  50% {
    opacity: 1;
  }
}

@media (max-width: 1200px) {
  .app {
    grid-template-columns: 230px minmax(0, 1fr);
  }

  .inspector {
    position: static;
    height: auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 16px;
  }
}

@media (max-width: 1024px) {
  .app {
    grid-template-columns: 1fr;
    padding: 16px;
  }

  .sidebar,
  .inspector {
    display: none;
  }

  .main {
    gap: 16px;
  }

  body[data-page="chat"] .main-header {
    display: none;
  }

  body[data-page="chat"] .chat-panel {
    min-height: calc(100vh - 32px);
  }

  .landing-hero {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 900px) {
  .app {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    height: auto;
  }

  .sidebar-nav {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 6px;
  }

  .nav-item {
    flex: 1 1 140px;
  }

  .main-header {
    flex-direction: column;
    align-items: flex-start;
  }

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

  .chat-panel {
    min-height: 420px;
  }

  .landing-header {
    align-items: flex-start;
  }

  .mid-cta {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 600px) {
  .app {
    padding: 16px;
  }

  .sidebar {
    padding: 16px;
  }

  .headline {
    font-size: 22px;
  }

  .profile-card {
    width: 100%;
  }

  .composer {
    flex-direction: column;
    align-items: stretch;
    border-radius: 16px;
  }

  .composer input {
    width: 100%;
  }

  .sidebar-nav {
    flex-direction: column;
  }

  .nav-item {
    flex: 1 1 auto;
  }

  .chat-toolbar {
    flex-direction: column;
    align-items: flex-start;
  }

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

  .landing {
    padding: 20px;
    gap: 48px;
  }

  .hero-title {
    font-size: 34px;
  }

  .landing-nav {
    gap: 10px;
  }

  .hero-metrics {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .orb {
    animation: none;
  }
}

.hero-form {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-top: 22px;
  padding: 12px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border);
}

.hero-form input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text);
  font-size: 15px;
  outline: none;
}

.hero-form input::placeholder {
  color: var(--text-dim);
}

.page-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.8fr);
  gap: 28px;
  align-items: center;
}

.page-hero-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: 26px;
  padding: 18px;
}

.page-hero-card img {
  width: 100%;
  display: block;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.05);
}

.media-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
}

.media-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.media-card img {
  width: 100%;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.legal-page {
  display: flex;
  flex-direction: column;
  gap: 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 24px;
}

.legal-page h1 {
  margin: 0;
}

.legal-page h2 {
  margin: 18px 0 6px;
}

.legal-page a {
  color: var(--primary);
}

@media (max-width: 1024px) {
  .page-hero {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .hero-form {
    flex-direction: column;
    align-items: stretch;
    border-radius: 18px;
  }

  .hero-form .cta {
    width: 100%;
  }
}