/* ========================================
   EdTechAgent Audit — Bold Signal Theme
   ======================================== */

/* CSS Variables — cyan→blue palette (unified with site redesign) */
:root {
  --bg: #09090B;
  --bg-secondary: #18181B;
  --bg-card: rgba(0,0,0,.4);
  --text: #FAFAFA;
  --text-secondary: rgba(255,255,255,.7);
  --text-tertiary: rgba(255,255,255,.5);
  --border: rgba(255,255,255,.1);
  --border-light: rgba(255,255,255,.2);
  --accent: hsl(200,95%,62%);
  --accent-hover: hsl(200,95%,70%);
  --accent-bg: rgba(56,189,248,.12);
  --accent-border: rgba(56,189,248,.35);
  --cyan: hsl(200,95%,62%);
  --grad: linear-gradient(135deg, hsl(220,90%,55%) 0%, hsl(200,95%,62%) 100%);
  --tag-bg: rgba(255,255,255,.05);
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-hover: 0 8px 28px rgba(0, 0, 0, 0.4), 0 0 48px rgba(56,189,248,.15);
  --radius: 14px;
  --radius-sm: 10px;
  --font-head: 'Space Grotesk', system-ui, sans-serif;
  --font: 'Inter', system-ui, sans-serif;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --score-red: #ef4444;
  --score-orange: #f59e0b;
  --score-yellow: #eab308;
  --score-green: #10b981;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: #000;
  color: var(--text);
  line-height: 1.65;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* Particles background (fixed, sits behind everything) */
.particles-bg{
  position:fixed;top:0;left:0;right:0;bottom:0;
  z-index:-1;pointer-events:auto;
  overflow:hidden;
  background:linear-gradient(135deg,
    #000000 0%,
    #020617 40%,
    #050d1a 70%,
    #0a1628 100%);
}
.particles-bg .particles-js-canvas-el{
  position:absolute;top:0;left:0;max-width:100%;
}
.particles-bg canvas{display:block}
.app-container { position: relative; z-index: 1; }
::selection { background: var(--accent); color: #fff; }

/* ========== Animations ========== */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes spin {
  to { transform: rotate(360deg); }
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.fadeUp { animation: fadeUp 0.6s var(--ease) both; }
.fadeIn { animation: fadeIn 0.4s var(--ease) both; }
.fadeUp > *:nth-child(1) { animation-delay: 0s; }
.fadeUp > *:nth-child(2) { animation-delay: 0.05s; }
.fadeUp > *:nth-child(3) { animation-delay: 0.1s; }
.fadeUp > *:nth-child(4) { animation-delay: 0.15s; }
.fadeUp > *:nth-child(5) { animation-delay: 0.2s; }

/* ========== Layout ========== */
.app-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 160px 24px 40px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
@media(max-width:720px){
  .app-container{padding:140px 20px 32px}
}

/* ========== Navbar ========== */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 32px;
  position: sticky;
  top: 0;
  background: rgba(9, 9, 11, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  z-index: 100;
}

.nav-logo {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.03em;
  text-decoration: none;
  background: var(--grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-back {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.3s var(--ease);
}
.nav-back:hover { border-color: var(--accent); color: var(--text); }

/* ========== Progress Bar ========== */
.progress-bar-container {
  margin-bottom: 32px;
  animation: fadeIn 0.4s var(--ease);
}
.progress-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
  font-size: 13px;
  color: var(--text-secondary);
}
.progress-track {
  width: 100%;
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  background: var(--grad);
  border-radius: 3px;
  transition: width 0.5s var(--ease);
}

/* ========== Welcome Screen ========== */
.step { flex: 1; display: flex; flex-direction: column; }

.welcome {
  text-align: center;
  justify-content: center;
  align-items: center;
  padding: 60px 0;
}
.welcome .logo-section { margin-bottom: 32px; }
.welcome .logo-big {
  width: 64px;
  height: 64px;
  background: var(--grad);
  border-radius: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}
.welcome .logo-big svg { width: 36px; height: 36px; color: #fff; fill: none; }
.welcome h1 {
  font-family: var(--font-head);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 4px;
}
.welcome .subtitle-en {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 8px;
  background: var(--grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.welcome .subtitle-ru {
  font-size: 18px;
  color: var(--text-secondary);
  margin-bottom: 12px;
}
.welcome .description {
  font-size: 15px;
  color: var(--text-secondary);
  max-width: 520px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.25s var(--ease);
  text-decoration: none;
  line-height: 1.4;
}
.btn-primary {
  background: var(--grad);
  color: #fff;
}
.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(56, 189, 248, 0.25);
}
.btn-primary:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
}
.btn-secondary {
  background: transparent;
  color: var(--cyan);
  border: 1px solid var(--accent-border);
}
.btn-secondary:hover { background: var(--accent-bg); }
.btn-outline {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
}
.btn-outline:hover { border-color: var(--accent); color: var(--text); }
.btn-lg { padding: 16px 40px; font-size: 17px; }
.btn-sm { padding: 8px 16px; font-size: 13px; }

/* ========== Cards Grid ========== */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 24px 0;
}
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s var(--ease);
  position: relative;
  overflow: hidden;
}
.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--grad);
  opacity: 0;
  transition: opacity 0.3s;
}
.card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}
.card:hover::before { opacity: 1; }
.card.selected {
  border-color: var(--accent);
  background: var(--accent-bg);
  box-shadow: 0 0 0 2px var(--accent);
}
.card.selected::before { opacity: 1; }
.card-emoji { font-size: 40px; margin-bottom: 12px; display: block; }
.card-icon{
  display:inline-flex;align-items:center;justify-content:center;
  width:56px;height:56px;margin:0 auto 14px;
  border-radius:14px;
  background:var(--accent-bg);
  border:1px solid var(--accent-border);
  color:var(--accent);
}
.card-icon svg{display:block}
.card.selected .card-icon{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.25);color:#fff}
.card-title {
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}
.card-desc { font-size: 13px; color: var(--text-secondary); line-height: 1.5; }

/* ========== Forms ========== */
.form-group { margin-bottom: 20px; }
.form-label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text);
}
.form-input, .form-select {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: 14px;
  background: var(--bg);
  color: var(--text);
  transition: border-color 0.3s var(--ease);
  outline: none;
}
.form-input:focus, .form-select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.1);
}
.form-input::placeholder { color: var(--text-tertiary); }
.form-error { color: var(--score-red); font-size: 12px; margin-top: 4px; display: none; }
.form-error.visible { display: block; }

/* ========== Section Headings ========== */
.step-header { margin-bottom: 28px; }
.step-header h2 {
  font-family: var(--font-head);
  font-size: clamp(1.2rem, 3vw, 1.6rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 8px;
}
.step-header p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ========== Question Blocks ========== */
.question-block {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-bottom: 16px;
  transition: box-shadow 0.3s var(--ease);
}
.question-block:hover { box-shadow: var(--shadow-hover); }
.question-text {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 14px;
  line-height: 1.5;
}
.radio-group { display: flex; flex-direction: column; gap: 8px; }
.radio-option {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s var(--ease);
  font-size: 14px;
  line-height: 1.5;
}
.radio-option:hover { border-color: var(--accent); background: var(--accent-bg); }
.radio-option.selected { border-color: var(--accent); background: var(--accent-bg); }
.radio-option input[type="radio"] {
  margin-top: 3px;
  accent-color: var(--accent);
  flex-shrink: 0;
}
.checkbox-group { display: flex; flex-wrap: wrap; gap: 8px; }
.checkbox-option {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  font-size: 13px;
  transition: all 0.2s var(--ease);
}
.checkbox-option:hover { border-color: var(--accent); }
.checkbox-option.selected { border-color: var(--accent); background: var(--accent-bg); }
.checkbox-option input[type="checkbox"] { accent-color: var(--accent); }

/* ========== Navigation Buttons ========== */
.step-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}
.step-nav-right { margin-left: auto; }

/* ========== Upload Zone ========== */
.upload-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 48px 24px;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s var(--ease);
  position: relative;
}
.upload-zone:hover, .upload-zone.dragover {
  border-color: var(--accent);
  background: var(--accent-bg);
}
.upload-zone-icon { font-size: 48px; margin-bottom: 16px; color: var(--accent); }
.upload-zone-text { font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.upload-zone-hint { font-size: 13px; color: var(--text-secondary); }
.upload-zone input[type="file"] { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
.file-list { margin-top: 20px; }
.file-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  background: var(--bg-secondary);
  border-radius: 8px;
  margin-bottom: 8px;
  font-size: 14px;
}
.file-item-name { font-weight: 500; }
.file-item-status { font-size: 12px; color: var(--text-secondary); }
.file-item-status.done { color: var(--score-green); }
.file-item-status.error { color: var(--score-red); }

/* ========== Results Dashboard ========== */
.results-header { text-align: center; margin-bottom: 32px; }
.results-header h2 {
  font-family: var(--font-head);
  font-size: clamp(1.4rem, 3.5vw, 1.8rem);
  font-weight: 700;
  letter-spacing: -0.03em;
}
.results-header .org-name {
  font-size: 18px;
  margin-top: 4px;
  background: var(--grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.score-summary {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  margin: 24px 0;
  padding: 28px;
  background: var(--accent-bg);
  border: 1px solid var(--accent-border);
  border-radius: var(--radius);
}
.score-big {
  font-family: var(--font-head);
  font-size: 56px;
  font-weight: 700;
  line-height: 1;
  background: var(--grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.score-big small {
  font-size: 22px;
  font-weight: 400;
  -webkit-text-fill-color: var(--text-secondary);
}
.score-level { text-align: left; }
.score-level .level-name {
  font-family: var(--font-head);
  font-size: 22px;
  font-weight: 700;
}
.score-level .level-desc {
  font-size: 14px;
  color: var(--text-secondary);
  max-width: 350px;
  line-height: 1.5;
  margin-top: 4px;
}

/* Radar Chart */
.radar-section { display: flex; justify-content: center; margin: 28px 0; }
.radar-container { max-width: 650px; width: 100%; }
.radar-container canvas { width: 100% !important; height: auto !important; }

/* Score Cards */
.score-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 12px;
  margin: 24px 0;
}
.score-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 14px;
}
.score-card-value {
  font-family: var(--font-head);
  font-size: 28px;
  font-weight: 700;
  min-width: 50px;
  text-align: center;
}
.score-card-info h4 { font-size: 14px; font-weight: 600; margin-bottom: 2px; }
.score-card-info p { font-size: 12px; color: var(--text-secondary); }

/* Recommendations */
.recommendations-section { margin: 32px 0; }
.recommendations-section h3 {
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 16px;
}
.rec-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 12px;
  border-left: 4px solid var(--accent);
}
.rec-card.high { border-left-color: var(--score-red); }
.rec-card.medium { border-left-color: var(--score-orange); }
.rec-card h4 { font-size: 15px; font-weight: 600; margin-bottom: 6px; }
.rec-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.6; }
.rec-priority {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  margin-top: 8px;
}
.rec-priority.high { background: rgba(239, 68, 68, 0.1); color: var(--score-red); }
.rec-priority.medium { background: rgba(245, 158, 11, 0.1); color: var(--score-orange); }

/* ROI */
.roi-section {
  background: var(--accent-bg);
  border: 1px solid var(--accent-border);
  border-radius: var(--radius);
  padding: 24px;
  margin: 24px 0;
  text-align: center;
}
.roi-section h3 { font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.roi-amount {
  font-family: var(--font-head);
  font-size: 36px;
  font-weight: 700;
  background: var(--grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.roi-assumptions { font-size: 12px; color: var(--text-tertiary); margin-top: 8px; }

/* Email section */
.email-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  margin: 32px 0;
  text-align: center;
}
.email-section h3 {
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
}
.email-form { display: flex; flex-direction: column; align-items: center; }

/* Results actions */
.results-actions {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin: 32px 0;
  flex-wrap: wrap;
}

/* ========== Chat (kept for compat) ========== */
.chat-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 20px;
  min-height: 500px;
}
.chat-sidebar {
  background: var(--bg-secondary);
  border-radius: var(--radius);
  padding: 16px;
}
.chat-sidebar h4 {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 12px;
}
.chat-doc-item {
  font-size: 13px;
  padding: 8px 10px;
  background: var(--bg-card);
  border-radius: 6px;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.chat-doc-icon { font-size: 16px; }
.quick-actions { margin-top: 20px; }
.quick-actions h4 { margin-bottom: 8px; }
.quick-action-btn {
  display: block;
  width: 100%;
  text-align: left;
  padding: 8px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-family: var(--font);
  font-size: 13px;
  cursor: pointer;
  margin-bottom: 6px;
  transition: all 0.2s var(--ease);
  color: var(--text);
}
.quick-action-btn:hover { border-color: var(--accent); background: var(--accent-bg); }
.chat-main {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.chat-messages {
  flex: 1;
  min-height: 350px;
  max-height: 500px;
  overflow-y: auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.chat-message {
  max-width: 80%;
  padding: 12px 16px;
  border-radius: 12px;
  font-size: 14px;
  line-height: 1.6;
  animation: fadeUp 0.3s var(--ease);
  white-space: pre-wrap;
}
.chat-message.user {
  align-self: flex-end;
  background: var(--accent);
  color: #fff;
  border-bottom-right-radius: 4px;
}
.chat-message.assistant {
  align-self: flex-start;
  background: var(--bg-secondary);
  border-bottom-left-radius: 4px;
}
.chat-message h1, .chat-message h2, .chat-message h3, .chat-message h4 { margin: 12px 0 6px; line-height: 1.4; }
.chat-message h3 { font-size: 15px; }
.chat-message h4 { font-size: 14px; }
.chat-message p { margin: 6px 0; }
.chat-message ul, .chat-message ol { margin: 6px 0; padding-left: 20px; }
.chat-message li { margin: 3px 0; }
.chat-message strong { font-weight: 700; }
.chat-message em { font-style: italic; }
.chat-message hr { border: none; border-top: 1px solid var(--border); margin: 12px 0; }
.chat-message code { background: var(--tag-bg); padding: 1px 5px; border-radius: 4px; font-size: 13px; }
.chat-message pre { background: var(--tag-bg); padding: 10px; border-radius: 6px; overflow-x: auto; font-size: 13px; margin: 8px 0; }
.chat-message blockquote { border-left: 3px solid var(--accent); padding-left: 12px; margin: 8px 0; color: var(--text-secondary); }
.chat-input-area {
  display: flex;
  gap: 8px;
  padding: 12px 16px;
  border-top: 1px solid var(--border);
  background: var(--bg-card);
}
.chat-input {
  flex: 1;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-family: var(--font);
  font-size: 14px;
  background: var(--bg);
  color: var(--text);
  outline: none;
  resize: none;
}
.chat-input:focus { border-color: var(--accent); }
.chat-send-btn {
  padding: 10px 20px;
  background: var(--grad);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-family: var(--font);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s var(--ease);
}
.chat-send-btn:hover:not(:disabled) { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(56, 189, 248, 0.3); }
.chat-send-btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* Quiz */
.quiz-container { margin-top: 16px; }
.quiz-question {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-bottom: 12px;
}
.quiz-question h4 { font-size: 14px; font-weight: 600; margin-bottom: 10px; }
.quiz-option {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  margin-bottom: 6px;
  cursor: pointer;
  font-size: 13px;
  transition: all 0.2s var(--ease);
}
.quiz-option:hover { border-color: var(--accent); }
.quiz-option.correct { border-color: var(--score-green); background: rgba(16, 185, 129, 0.1); }
.quiz-option.wrong { border-color: var(--score-red); background: rgba(239, 68, 68, 0.1); }

/* ========== Spinner ========== */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}
.spinner-lg { width: 40px; height: 40px; border-width: 3px; }
.loading-text {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 32px;
  color: var(--text-secondary);
  font-size: 15px;
}

/* ========== Toast ========== */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  padding: 12px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-hover);
  font-size: 14px;
  z-index: 1000;
  animation: fadeUp 0.3s var(--ease);
  max-width: 400px;
}
.toast.error { border-left: 4px solid var(--score-red); }
.toast.success { border-left: 4px solid var(--score-green); }

/* ========== Responsive ========== */
@media (max-width: 768px) {
  .cards-grid { grid-template-columns: 1fr; }
  .welcome h1 { font-size: 1.6rem; }
  .welcome .subtitle-en { font-size: 16px; }
  .score-summary { flex-direction: column; text-align: center; }
  .score-level { text-align: center; }
  .chat-layout { grid-template-columns: 1fr; }
  .chat-sidebar { display: none; }
  .results-actions { flex-direction: column; align-items: stretch; }
  .step-nav { flex-direction: column; gap: 12px; }
  .score-cards { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .app-container { padding: 130px 16px 28px; }
  .welcome { padding: 30px 0; }
  .btn-lg { width: 100%; }
}