/* ============================================================
   DaF Sprachanalyse – Design System
   Elegant, clean, professional
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Playfair+Display:wght@600;700&display=swap');

:root {
  --color-bg:          #f8fafc;
  --color-surface:     #ffffff;
  --color-surface-2:   #f1f5f9;
  --color-border:      #e2e8f0;
  --color-border-2:    #cbd5e1;

  --color-primary:     #1e40af;
  --color-primary-h:   #1d3a9e;
  --color-primary-l:   #dbeafe;
  --color-accent:      #0ea5e9;
  --color-accent-l:    #e0f2fe;

  --color-success:     #16a34a;
  --color-success-l:   #dcfce7;
  --color-warning:     #d97706;
  --color-warning-l:   #fef3c7;
  --color-danger:      #dc2626;
  --color-danger-l:    #fee2e2;

  --color-text:        #0f172a;
  --color-text-2:      #334155;
  --color-text-3:      #64748b;
  --color-text-4:      #94a3b8;

  --radius-sm:   6px;
  --radius-md:   10px;
  --radius-lg:   16px;
  --radius-xl:   24px;
  --radius-full: 9999px;

  --shadow-sm:  0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md:  0 4px 12px rgba(0,0,0,.08), 0 2px 4px rgba(0,0,0,.04);
  --shadow-lg:  0 10px 30px rgba(0,0,0,.10), 0 4px 8px rgba(0,0,0,.05);
  --shadow-xl:  0 20px 60px rgba(0,0,0,.12);

  --font-sans:  'Inter', system-ui, sans-serif;
  --font-serif: 'Playfair Display', Georgia, serif;

  --transition: 200ms cubic-bezier(.4,0,.2,1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── Typography ── */
h1, h2, h3, h4 { line-height: 1.25; font-weight: 600; }
h1 { font-size: clamp(1.8rem, 4vw, 2.8rem); font-family: var(--font-serif); }
h2 { font-size: clamp(1.3rem, 3vw, 1.8rem); }
h3 { font-size: 1.15rem; }
p  { color: var(--color-text-2); }

/* ── Layout ── */
.container { max-width: 1100px; margin: 0 auto; padding: 0 1.5rem; }
.container-sm { max-width: 720px; margin: 0 auto; padding: 0 1.5rem; }

/* ── Navbar ── */
.navbar {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  padding: .9rem 0;
}
.navbar-inner {
  display: flex; align-items: center; justify-content: space-between;
}
.navbar-brand {
  display: flex; align-items: center; gap: .6rem;
  text-decoration: none; color: var(--color-text);
  font-weight: 700; font-size: 1.1rem;
}
.navbar-brand .brand-icon {
  width: 36px; height: 36px; border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  display: flex; align-items: center; justify-content: center;
  color: white; font-size: 1rem;
}
.navbar-badge {
  font-size: .7rem; font-weight: 600; padding: .2rem .55rem;
  background: var(--color-primary-l); color: var(--color-primary);
  border-radius: var(--radius-full); letter-spacing: .03em;
}

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .65rem 1.4rem; border-radius: var(--radius-md);
  font-size: .9rem; font-weight: 500; cursor: pointer;
  border: none; text-decoration: none; transition: var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--color-primary); color: white;
  box-shadow: 0 2px 8px rgba(30,64,175,.3);
}
.btn-primary:hover { background: var(--color-primary-h); transform: translateY(-1px); box-shadow: 0 4px 16px rgba(30,64,175,.35); }
.btn-secondary {
  background: var(--color-surface); color: var(--color-text-2);
  border: 1px solid var(--color-border);
}
.btn-secondary:hover { background: var(--color-surface-2); border-color: var(--color-border-2); }
.btn-danger { background: var(--color-danger); color: white; }
.btn-danger:hover { background: #b91c1c; }
.btn-ghost { background: transparent; color: var(--color-text-3); padding: .5rem .8rem; }
.btn-ghost:hover { background: var(--color-surface-2); color: var(--color-text); }
.btn-lg { padding: .85rem 2rem; font-size: 1rem; border-radius: var(--radius-lg); }
.btn-sm { padding: .4rem .9rem; font-size: .82rem; }
.btn:disabled { opacity: .5; cursor: not-allowed; transform: none !important; }

/* ── Cards ── */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}
.card-body { padding: 1.5rem; }
.card-header {
  padding: 1.2rem 1.5rem;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface-2);
}
.card-header h3 { font-size: 1rem; color: var(--color-text); }

/* ── Badges ── */
.badge {
  display: inline-flex; align-items: center; gap: .3rem;
  padding: .2rem .65rem; border-radius: var(--radius-full);
  font-size: .75rem; font-weight: 600; letter-spacing: .03em;
}
.badge-blue   { background: var(--color-primary-l); color: var(--color-primary); }
.badge-green  { background: var(--color-success-l); color: var(--color-success); }
.badge-yellow { background: var(--color-warning-l); color: var(--color-warning); }
.badge-red    { background: var(--color-danger-l);  color: var(--color-danger); }
.badge-gray   { background: var(--color-surface-2); color: var(--color-text-3); }

/* CEFR-Badges */
.cefr-A1 { background: #fee2e2; color: #dc2626; }
.cefr-A2 { background: #ffedd5; color: #ea580c; }
.cefr-B1 { background: #fef9c3; color: #ca8a04; }
.cefr-B2 { background: #dcfce7; color: #16a34a; }
.cefr-C1 { background: #dbeafe; color: #1d4ed8; }
.cefr-C2 { background: #ede9fe; color: #7c3aed; }

/* ── Score Bar ── */
.score-bar-wrap { display: flex; align-items: center; gap: .75rem; }
.score-bar-track {
  flex: 1; height: 8px; background: var(--color-surface-2);
  border-radius: var(--radius-full); overflow: hidden;
}
.score-bar-fill {
  height: 100%; border-radius: var(--radius-full);
  background: linear-gradient(90deg, var(--color-accent), var(--color-primary));
  transition: width .6s cubic-bezier(.4,0,.2,1);
}
.score-bar-label { font-size: .82rem; font-weight: 600; color: var(--color-text-2); min-width: 2.5rem; text-align: right; }

/* ── Skill Grid ── */
.skill-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1rem; }
.skill-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.1rem 1.2rem;
}
.skill-card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: .8rem; }
.skill-card-title { font-size: .88rem; font-weight: 600; color: var(--color-text); }
.skill-score-big { font-size: 1.5rem; font-weight: 700; color: var(--color-primary); }
.skill-sub-list { display: flex; flex-direction: column; gap: .5rem; margin-top: .6rem; }
.skill-sub-item { display: flex; align-items: center; gap: .6rem; font-size: .8rem; }
.skill-sub-label { min-width: 130px; color: var(--color-text-3); }

/* ── Recorder ── */
.recorder-area {
  display: flex; flex-direction: column; align-items: center;
  gap: 1.5rem; padding: 2.5rem;
  background: linear-gradient(135deg, #f0f7ff 0%, #e8f4fd 100%);
  border: 2px dashed var(--color-border-2);
  border-radius: var(--radius-xl);
  transition: var(--transition);
}
.recorder-area.recording {
  border-color: var(--color-danger);
  background: linear-gradient(135deg, #fff0f0 0%, #ffe8e8 100%);
}
.record-btn {
  width: 80px; height: 80px; border-radius: 50%;
  border: none; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  font-size: 2rem; transition: var(--transition);
  box-shadow: var(--shadow-lg);
}
.record-btn-start { background: linear-gradient(135deg, var(--color-primary), var(--color-accent)); color: white; }
.record-btn-start:hover { transform: scale(1.08); box-shadow: 0 12px 32px rgba(30,64,175,.35); }
.record-btn-stop { background: linear-gradient(135deg, var(--color-danger), #f97316); color: white; animation: pulse-ring 1.5s infinite; }

@keyframes pulse-ring {
  0%   { box-shadow: 0 0 0 0 rgba(220,38,38,.4); }
  70%  { box-shadow: 0 0 0 16px rgba(220,38,38,0); }
  100% { box-shadow: 0 0 0 0 rgba(220,38,38,0); }
}

.timer { font-size: 2.2rem; font-weight: 700; font-variant-numeric: tabular-nums; color: var(--color-text); }
.timer.recording { color: var(--color-danger); }

/* Waveform */
.waveform { display: flex; align-items: center; gap: 3px; height: 40px; }
.waveform-bar {
  width: 4px; border-radius: 2px;
  background: var(--color-primary);
  animation: wave 1s ease-in-out infinite;
  opacity: .4;
}
.waveform-bar:nth-child(2n)  { animation-delay: .1s; }
.waveform-bar:nth-child(3n)  { animation-delay: .2s; }
.waveform-bar:nth-child(4n)  { animation-delay: .3s; }
.waveform-bar:nth-child(5n)  { animation-delay: .4s; }
@keyframes wave {
  0%, 100% { height: 8px; opacity: .3; }
  50%       { height: 32px; opacity: 1; }
}
.waveform.active .waveform-bar { opacity: 1; }

/* ── Progress Steps ── */
.steps { display: flex; align-items: center; gap: 0; margin-bottom: 2rem; }
.step {
  display: flex; align-items: center; gap: .5rem;
  font-size: .82rem; font-weight: 500; color: var(--color-text-4);
}
.step.active { color: var(--color-primary); }
.step.done   { color: var(--color-success); }
.step-num {
  width: 28px; height: 28px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: .8rem; font-weight: 700;
  background: var(--color-surface-2); color: var(--color-text-4);
  border: 2px solid var(--color-border);
  flex-shrink: 0;
}
.step.active .step-num { background: var(--color-primary); color: white; border-color: var(--color-primary); }
.step.done   .step-num { background: var(--color-success); color: white; border-color: var(--color-success); }
.step-connector { flex: 1; height: 2px; background: var(--color-border); min-width: 2rem; }
.step-connector.done { background: var(--color-success); }

/* ── Spinner ── */
.spinner {
  width: 40px; height: 40px; border-radius: 50%;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Alert ── */
.alert {
  padding: .9rem 1.2rem; border-radius: var(--radius-md);
  font-size: .88rem; display: flex; align-items: flex-start; gap: .6rem;
}
.alert-info    { background: var(--color-accent-l); color: #0369a1; border: 1px solid #bae6fd; }
.alert-success { background: var(--color-success-l); color: #15803d; border: 1px solid #bbf7d0; }
.alert-warning { background: var(--color-warning-l); color: #92400e; border: 1px solid #fde68a; }
.alert-danger  { background: var(--color-danger-l);  color: #991b1b; border: 1px solid #fecaca; }

/* ── Table ── */
.table-wrap { overflow-x: auto; border-radius: var(--radius-md); border: 1px solid var(--color-border); }
table { width: 100%; border-collapse: collapse; font-size: .88rem; }
thead { background: var(--color-surface-2); }
th { padding: .75rem 1rem; text-align: left; font-weight: 600; color: var(--color-text-2); font-size: .8rem; text-transform: uppercase; letter-spacing: .05em; }
td { padding: .75rem 1rem; border-top: 1px solid var(--color-border); color: var(--color-text-2); }
tr:hover td { background: var(--color-surface-2); }

/* ── Transcript Box ── */
.transcript-box {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.2rem;
  font-size: .9rem; line-height: 1.7;
  color: var(--color-text-2);
  max-height: 200px; overflow-y: auto;
}

/* ── Radar Chart Wrapper ── */
.chart-wrapper { position: relative; max-width: 340px; margin: 0 auto; }

/* ── Follow-up Questions ── */
.question-card {
  background: linear-gradient(135deg, #f0f7ff, #e8f4fd);
  border: 1px solid #bfdbfe;
  border-radius: var(--radius-md);
  padding: 1.1rem 1.2rem;
  cursor: pointer; transition: var(--transition);
}
.question-card:hover { border-color: var(--color-primary); transform: translateY(-1px); box-shadow: var(--shadow-md); }
.question-card.selected { border-color: var(--color-primary); background: var(--color-primary-l); }
.question-text { font-weight: 500; color: var(--color-text); margin-bottom: .3rem; }
.question-meta { font-size: .78rem; color: var(--color-text-3); }

/* ── Utilities ── */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-1 { gap: .25rem; } .gap-2 { gap: .5rem; } .gap-3 { gap: .75rem; }
.gap-4 { gap: 1rem; }   .gap-6 { gap: 1.5rem; } .gap-8 { gap: 2rem; }
.mt-1 { margin-top: .25rem; } .mt-2 { margin-top: .5rem; }
.mt-4 { margin-top: 1rem; }   .mt-6 { margin-top: 1.5rem; }
.mt-8 { margin-top: 2rem; }   .mt-12 { margin-top: 3rem; }
.mb-2 { margin-bottom: .5rem; } .mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; } .mb-8 { margin-bottom: 2rem; }
.text-sm   { font-size: .85rem; }
.text-xs   { font-size: .75rem; }
.text-muted { color: var(--color-text-3); }
.text-center { text-align: center; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }
.w-full { width: 100%; }
.hidden { display: none !important; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }

/* ── Stat Cards ── */
.stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.3rem 1.5rem;
  box-shadow: var(--shadow-sm);
}
.stat-value { font-size: 2rem; font-weight: 700; color: var(--color-text); line-height: 1; }
.stat-label { font-size: .82rem; color: var(--color-text-3); margin-top: .3rem; }

/* ── Page Header ── */
.page-header {
  padding: 3rem 0 2rem;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 2rem;
}
.page-header .subtitle { font-size: 1rem; color: var(--color-text-3); margin-top: .5rem; }

/* ── Footer ── */
.footer {
  margin-top: 4rem; padding: 1.5rem 0;
  border-top: 1px solid var(--color-border);
  text-align: center; font-size: .8rem; color: var(--color-text-4);
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .skill-grid { grid-template-columns: 1fr; }
  .steps { flex-wrap: wrap; gap: .5rem; }
  .step-connector { display: none; }
  .recorder-area { padding: 1.5rem; }
}