/* ============================================================
   Essential Idiomas — Teste de Nivelamento
   Theme: Quiet Luxury (paridade Portal RH + Portal Aluno)
   Brand: Navy #0F1923 + Champagne #C8A97E + Cream #FAF8F4
   Typography: DM Serif Display (headlines) + DM Sans (body)
   Philosophy: No-Line — tonal shifts, not borders
   ============================================================ */

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

/* === CSS VARIABLES === */
:root {
  /* Brand — Navy + Champagne */
  --petrol: #0F1923;
  --petrol-deep: #0A1018;
  --petrol-light: #1B2A3A;
  --petrol-pale: #F5F3EF;
  --gold: #C8A97E;
  --gold-light: #FDDAAC;
  --gold-dark: #735a36;
  --gold-glow: rgba(200,169,126,0.18);

  /* Backgrounds — warm cream tonal */
  --bg-page: #FAF8F4;
  --bg-card: #FFFFFF;
  --bg-card-hover: #FFFFFF;
  --bg-section: #F5F3EF;
  --bg-input: #EAE8E4;
  --bg-input-focus: #FFFFFF;
  --bg-overlay: rgba(15,25,35,0.6);

  /* Text — navy-based softer than pure black */
  --text-primary: #0F1923;
  --text-secondary: #44474b;
  --text-tertiary: #75777c;
  --text-inverse: #FFFFFF;
  --text-link: #735a36;

  /* Borders — very subtle (No-Line philosophy) */
  --border-light: rgba(15, 25, 35, 0.03);
  --border-medium: rgba(15, 25, 35, 0.08);
  --border-focus: #C8A97E;

  /* Shadows — navy-tinted, boutique */
  --shadow-sm: 0 2px 24px rgba(15, 25, 35, 0.04);
  --shadow-md: 0 8px 32px rgba(15, 25, 35, 0.06);
  --shadow-lg: 0 12px 40px rgba(15, 25, 35, 0.08);
  --shadow-card: 0 2px 24px rgba(15, 25, 35, 0.04);
  --shadow-elevated: 0 12px 32px rgba(15, 25, 35, 0.08);

  /* CEFR Level Colors (mesma paleta Portal RH) */
  --level-starter: #16A34A;
  --level-starter-bg: rgba(22, 163, 74, 0.10);
  --level-a1: #059669;
  --level-a1-bg: rgba(5, 150, 105, 0.10);
  --level-a2: #B45309;
  --level-a2-bg: rgba(180, 83, 9, 0.10);
  --level-b1: #2563EB;
  --level-b1-bg: rgba(37, 99, 235, 0.10);
  --level-b2: #7C3AED;
  --level-b2-bg: rgba(124, 58, 237, 0.10);
  --level-c1: #0F1923;
  --level-c1-bg: rgba(15, 25, 35, 0.06);

  /* Dimensions — boutique radius */
  --radius-sm: 12px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  --radius-pill: 60px;
  --max-width: 640px;

  /* Typography — Quiet Luxury duo */
  --font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body: 'DM Sans', sans-serif;
  --font-headline: 'DM Serif Display', Georgia, serif;
  --font-size-xs: 11px;
  --font-size-sm: 13px;
  --font-size-base: 15px;
  --font-size-md: 17px;
  --font-size-lg: 20px;
  --font-size-xl: 26px;
  --font-size-2xl: 34px;
  --font-size-3xl: 44px;
  --font-size-4xl: 60px;

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-fast: 150ms;
  --duration-normal: 300ms;
  --duration-slow: 500ms;
}

/* === BASE === */
html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  color: var(--text-primary);
  background: var(--bg-page);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  overflow-x: hidden;
}

/* === LAYOUT === */
.niv-container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

.niv-screen {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}
.niv-screen.active {
  opacity: 1;
  transform: translateY(0);
}
.niv-screen.exit {
  opacity: 0;
  transform: translateY(-12px);
  pointer-events: none;
}

/* === HEADER / BRAND — Logo letterform (paridade Portal RH) === */
.niv-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 24px 0 8px;
  gap: 4px;
}
.niv-logo-mark { display: none; }
.niv-logo-text {
  font-family: var(--font-headline);
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--text-primary);
  letter-spacing: -0.01em;
  line-height: 1;
}
.niv-header .niv-logo-text::after {
  content: 'Nivelamento';
  display: block;
  font-family: var(--font-body);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--gold);
  font-weight: 700;
  margin-top: 6px;
  text-align: center;
}

/* === TYPOGRAPHY === */
.niv-title {
  font-family: var(--font-headline);
  font-size: var(--font-size-2xl);
  font-weight: 400;
  color: var(--text-primary);
  line-height: 1.15;
  letter-spacing: -0.02em;
}
.niv-subtitle {
  font-family: var(--font-body);
  font-size: var(--font-size-md);
  font-weight: 400;
  color: var(--text-secondary);
  line-height: 1.5;
}
.niv-label {
  font-family: var(--font-body);
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--gold);
}

/* === BUTTONS — pill shape, Quiet Luxury palette === */
.niv-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border: none;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
  outline: none;
  text-decoration: none;
  white-space: nowrap;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}
.niv-btn:active { transform: scale(0.97); }
.niv-btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

.niv-btn-primary {
  background: var(--petrol);
  color: var(--text-inverse);
  box-shadow: 0 2px 12px rgba(15, 25, 35, 0.20);
}
.niv-btn-primary:hover:not(:disabled) {
  background: var(--petrol-light);
  box-shadow: 0 4px 20px rgba(15, 25, 35, 0.28);
  transform: translateY(-1px);
}

.niv-btn-gold {
  background: var(--gold);
  color: #FFFFFF;
  box-shadow: 0 2px 12px rgba(200, 169, 126, 0.35);
}
.niv-btn-gold:hover:not(:disabled) {
  background: var(--gold-dark);
  box-shadow: 0 4px 20px rgba(115, 90, 54, 0.40);
  transform: translateY(-1px);
}

.niv-btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-medium);
}
.niv-btn-outline:hover:not(:disabled) {
  border-color: var(--gold);
  background: rgba(200, 169, 126, 0.08);
}

.niv-btn-ghost {
  background: transparent;
  color: var(--text-tertiary);
  padding: 10px 16px;
  text-transform: none;
  letter-spacing: 0;
  font-weight: 500;
}
.niv-btn-ghost:hover {
  color: var(--text-primary);
  background: rgba(15, 25, 35, 0.04);
}

.niv-btn-lg {
  padding: 16px 40px;
  font-size: var(--font-size-sm);
}
.niv-btn-sm {
  padding: 10px 20px;
  font-size: 11px;
  letter-spacing: 0.1em;
}
.niv-btn-block { width: 100%; }

/* === CARDS — boutique radius, no-line === */
.niv-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  border: none;
  padding: 32px;
  transition: box-shadow var(--duration-normal) var(--ease-out),
              transform var(--duration-normal) var(--ease-out);
}
.niv-card:hover { box-shadow: var(--shadow-md); }
.niv-card-elevated {
  box-shadow: var(--shadow-elevated);
}

/* === FORM === */
.niv-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.niv-field label {
  font-family: var(--font-body);
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-tertiary);
}
.niv-input {
  width: 100%;
  padding: 14px 16px;
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  color: var(--text-primary);
  background: var(--bg-input);
  border: none;
  border-radius: var(--radius-sm);
  outline: none;
  transition: all var(--duration-fast);
}
.niv-input:focus {
  background: var(--bg-input-focus);
  box-shadow: 0 0 0 2px rgba(200, 169, 126, 0.3);
}
.niv-input::placeholder {
  color: var(--text-tertiary);
}

/* === TOGGLE (language picker) — segmented control pill === */
.niv-toggle {
  display: flex;
  background: var(--bg-section);
  border-radius: var(--radius-pill);
  padding: 4px;
  gap: 4px;
  border: none;
  box-shadow: inset 0 1px 2px rgba(15, 25, 35, 0.04);
}
.niv-toggle-btn {
  flex: 1;
  padding: 10px 16px;
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  font-weight: 600;
  background: transparent;
  border: none;
  border-radius: var(--radius-pill);
  cursor: pointer;
  color: var(--text-tertiary);
  transition: all var(--duration-normal) var(--ease-spring);
}
.niv-toggle-btn:hover {
  color: var(--text-primary);
}
.niv-toggle-btn.active {
  background: var(--bg-card);
  color: var(--text-primary);
  font-weight: 700;
  box-shadow: 0 2px 8px rgba(15, 25, 35, 0.06);
}

/* === PHASE TABS === */
.niv-phases {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  padding: 16px 0;
}
.niv-phase {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-tertiary);
  transition: color var(--duration-normal);
}
.niv-phase.active {
  color: var(--text-primary);
  font-weight: 700;
}
.niv-phase.done {
  color: var(--level-a1);
}
.niv-phase-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--border-medium);
  transition: all var(--duration-normal);
  flex-shrink: 0;
}
.niv-phase.active .niv-phase-dot {
  background: var(--gold);
  box-shadow: 0 0 0 4px rgba(200, 169, 126, 0.18);
}
.niv-phase.done .niv-phase-dot {
  background: var(--level-a1);
}
.niv-phase-line {
  width: 32px;
  height: 2px;
  background: var(--border-medium);
  flex-shrink: 0;
}
.niv-phase.done + .niv-phase-line {
  background: var(--level-a1);
}

/* === PROGRESS BAR — navy → champagne gradient === */
.niv-progress-wrap {
  padding: 0 0 12px;
}
.niv-progress-bar {
  height: 4px;
  background: var(--border-medium);
  border-radius: 9999px;
  overflow: hidden;
}
.niv-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--petrol) 0%, var(--gold) 100%);
  border-radius: 9999px;
  transition: width var(--duration-slow) var(--ease-out);
}

/* === QUESTION CARD === */
.niv-question-wrap {
  position: relative;
}
.niv-question-counter {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 0 12px;
}
.niv-question-num {
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 700;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}
.niv-question-timer {
  position: relative;
  width: 36px;
  height: 36px;
}
.niv-question-timer canvas {
  position: absolute;
  inset: 0;
}
.niv-question-timer-text {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xs);
  font-weight: 700;
  color: var(--text-tertiary);
  font-variant-numeric: tabular-nums;
}

.niv-question-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  border: none;
  overflow: hidden;
  transition: opacity var(--duration-normal) var(--ease-out),
              transform var(--duration-normal) var(--ease-out);
}
.niv-question-card.entering {
  opacity: 0;
  transform: translateX(20px);
}
.niv-question-card.visible {
  opacity: 1;
  transform: translateX(0);
}
.niv-question-card.exiting {
  opacity: 0;
  transform: translateX(-20px);
}

.niv-question-header {
  padding: 24px 28px 0;
}
.niv-question-instruction {
  font-family: var(--font-body);
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--gold);
  margin-bottom: 8px;
}
.niv-question-passage {
  margin: 16px 28px;
  padding: 18px 22px;
  background: var(--bg-section);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--gold);
  font-size: var(--font-size-base);
  line-height: 1.7;
  color: var(--text-primary);
  max-height: 240px;
  overflow-y: auto;
}
.niv-question-enunciado {
  padding: 16px 28px;
  font-family: var(--font-body);
  font-size: var(--font-size-md);
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.5;
}

/* Audio indicator for listening */
.niv-audio-indicator {
  margin: 12px 28px;
  padding: 14px 18px;
  background: rgba(200, 169, 126, 0.10);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: var(--font-size-sm);
  color: var(--gold-dark);
  font-weight: 500;
}
.niv-audio-wave {
  display: flex;
  align-items: center;
  gap: 2px;
  height: 20px;
}
.niv-audio-wave span {
  width: 3px;
  background: var(--gold-dark);
  border-radius: 2px;
  animation: audioWave 1.2s ease-in-out infinite;
}
.niv-audio-wave span:nth-child(1) { height: 6px; animation-delay: 0s; }
.niv-audio-wave span:nth-child(2) { height: 12px; animation-delay: 0.15s; }
.niv-audio-wave span:nth-child(3) { height: 18px; animation-delay: 0.3s; }
.niv-audio-wave span:nth-child(4) { height: 12px; animation-delay: 0.45s; }
.niv-audio-wave span:nth-child(5) { height: 6px; animation-delay: 0.6s; }
@keyframes audioWave {
  0%, 100% { transform: scaleY(0.5); }
  50% { transform: scaleY(1); }
}

/* === OPTIONS (MCQ) — tonal hover, no harsh borders === */
.niv-options {
  padding: 8px 28px 28px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.niv-option {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 18px;
  background: var(--bg-section);
  border: 1.5px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--duration-fast);
  -webkit-tap-highlight-color: transparent;
}
.niv-option:hover {
  background: rgba(200, 169, 126, 0.10);
}
.niv-option.selected {
  border-color: var(--gold);
  background: rgba(200, 169, 126, 0.14);
  box-shadow: 0 2px 12px rgba(200, 169, 126, 0.18);
}
.niv-option-radio {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid var(--border-medium);
  flex-shrink: 0;
  margin-top: 1px;
  transition: all var(--duration-fast);
  position: relative;
}
.niv-option.selected .niv-option-radio {
  border-color: var(--gold);
  background: var(--gold);
}
.niv-option.selected .niv-option-radio::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 8px;
  height: 8px;
  background: white;
  border-radius: 50%;
  transform: translate(-50%, -50%);
}
.niv-option-text {
  font-size: var(--font-size-base);
  color: var(--text-primary);
  line-height: 1.5;
}
.niv-option-letter {
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 700;
  color: var(--text-tertiary);
  width: 20px;
  text-align: center;
  flex-shrink: 0;
  line-height: 22px;
  letter-spacing: 0.06em;
}

/* Fill blank input */
.niv-fill-blank {
  padding: 8px 28px 28px;
}
.niv-fill-input {
  width: 100%;
  padding: 14px 18px;
  font-family: var(--font-body);
  font-size: var(--font-size-md);
  color: var(--text-primary);
  background: var(--bg-section);
  border: 1.5px solid transparent;
  border-radius: var(--radius-sm);
  outline: none;
  transition: all var(--duration-fast);
}
.niv-fill-input:focus {
  border-color: var(--gold);
  background: var(--bg-input-focus);
  box-shadow: 0 0 0 3px rgba(200, 169, 126, 0.15);
}

/* Writing area (free_text) */
.niv-writing-area {
  padding: 8px 28px 28px;
}
.niv-writing-textarea {
  width: 100%;
  min-height: 140px;
  padding: 14px 18px;
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  color: var(--text-primary);
  background: var(--bg-section);
  border: 1.5px solid transparent;
  border-radius: var(--radius-sm);
  outline: none;
  resize: vertical;
  line-height: 1.6;
  transition: all var(--duration-fast);
}
.niv-writing-textarea:focus {
  border-color: var(--gold);
  background: var(--bg-input-focus);
  box-shadow: 0 0 0 3px rgba(200, 169, 126, 0.15);
}
.niv-writing-hint {
  font-size: var(--font-size-xs);
  color: var(--text-tertiary);
  margin-top: 8px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.niv-word-counter {
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}
.niv-word-counter.low { color: #DC2626; }
.niv-word-counter.ok { color: var(--level-a1); }

/* Speaking area (speak_prompt) */
.niv-speaking-area {
  padding: 8px 28px 28px;
}
.niv-speaking-hint {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: rgba(200, 169, 126, 0.10);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(200, 169, 126, 0.25);
  font-size: var(--font-size-sm);
  color: var(--gold-dark);
  font-weight: 500;
  margin-bottom: 12px;
}
.niv-skill-note {
  font-size: 10px;
  color: var(--text-tertiary);
  text-align: center;
  margin-top: 8px;
  font-style: italic;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 600;
}

/* Transition icons: writing + speaking */
.niv-transition-icon.writing {
  background: var(--level-b1-bg);
  color: var(--level-b1);
}
.niv-transition-icon.speaking {
  background: var(--level-b2-bg);
  color: var(--level-b2);
}

/* IA evaluation loading */
.niv-evaluating {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: rgba(200, 169, 126, 0.10);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  color: var(--gold-dark);
  font-weight: 500;
  margin: 12px 28px;
}
.niv-evaluating .niv-spinner-ring {
  width: 20px;
  height: 20px;
  border-width: 2px;
  flex-shrink: 0;
}

/* True/False buttons */
.niv-tf-options {
  padding: 8px 28px 28px;
  display: flex;
  gap: 10px;
}
.niv-tf-btn {
  flex: 1;
  padding: 14px;
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  font-weight: 500;
  background: var(--bg-section);
  border: 1.5px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--duration-fast);
  text-align: center;
  color: var(--text-primary);
}
.niv-tf-btn:hover {
  background: rgba(200, 169, 126, 0.10);
}
.niv-tf-btn.selected {
  border-color: var(--gold);
  background: rgba(200, 169, 126, 0.14);
  font-weight: 700;
  color: var(--text-primary);
}

/* === FEEDBACK FLASH === */
.niv-feedback {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%) translateY(-60px);
  padding: 10px 24px;
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  opacity: 0;
  transition: all var(--duration-normal) var(--ease-spring);
  z-index: 100;
  pointer-events: none;
  box-shadow: 0 4px 16px rgba(15, 25, 35, 0.10);
}
.niv-feedback.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}
.niv-feedback.correct {
  background: var(--level-a1);
  color: #FFFFFF;
}
.niv-feedback.incorrect {
  background: #DC2626;
  color: #FFFFFF;
}

/* === PHASE TRANSITION === */
.niv-transition {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  gap: 16px;
  text-align: center;
}
.niv-transition-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 8px;
}
.niv-transition-icon.reading {
  background: rgba(200, 169, 126, 0.14);
  color: var(--gold-dark);
}
.niv-transition-icon.listening {
  background: rgba(200, 169, 126, 0.14);
  color: var(--gold-dark);
}

/* === COMPLETING ANIMATION === */
.niv-completing {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 80vh;
  gap: 20px;
  text-align: center;
}
.niv-spinner-ring {
  width: 48px;
  height: 48px;
  border: 3px solid var(--border-medium);
  border-top-color: var(--gold);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin {
  to { transform: rotate(360deg); }
}

/* === RESULT PAGE === */
.niv-result-hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 40px 0 32px;
  gap: 8px;
}

.niv-level-reveal {
  position: relative;
  width: 180px;
  height: 180px;
  margin: 16px 0 8px;
}
.niv-level-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 3px solid var(--border-medium);
}
.niv-level-ring-fill {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 3px solid transparent;
  border-top-color: var(--gold);
  animation: levelSpin 2s ease-out forwards;
}
@keyframes levelSpin {
  0% { transform: rotate(0deg); border-top-color: var(--petrol); }
  50% { border-top-color: var(--gold); }
  100% { transform: rotate(720deg); border-top-color: var(--gold); }
}
.niv-level-badge {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0);
  font-family: var(--font-headline);
  font-size: var(--font-size-4xl);
  font-weight: 400;
  letter-spacing: -0.02em;
  animation: levelPop 0.5s var(--ease-spring) 2s forwards;
}
@keyframes levelPop {
  to { transform: translate(-50%, -50%) scale(1); }
}
.niv-level-label {
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  opacity: 0;
  animation: fadeIn 0.4s ease 2.4s forwards;
}

/* Score arc */
.niv-score-arc {
  position: relative;
  width: 120px;
  height: 120px;
  margin: 8px auto;
}
.niv-score-arc canvas {
  width: 100%;
  height: 100%;
}
.niv-score-value {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
}
.niv-score-number {
  font-family: var(--font-headline);
  font-size: var(--font-size-xl);
  font-weight: 400;
  color: var(--text-primary);
  line-height: 1;
  letter-spacing: -0.02em;
}
.niv-score-label {
  font-family: var(--font-body);
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-tertiary);
  margin-top: 4px;
}

/* Radar chart */
.niv-radar-wrap {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  border: none;
  padding: 28px;
  margin: 0 0 16px;
}
.niv-radar-title {
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 700;
  color: var(--text-tertiary);
  text-align: center;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
}
.niv-radar-canvas {
  width: 100%;
  max-width: 300px;
  margin: 0 auto;
  display: block;
}

/* Skill cards */
.niv-skills-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 0 0 16px;
}
.niv-skill-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  border: none;
  padding: 20px 16px;
  text-align: center;
  transition: box-shadow var(--duration-normal);
}
.niv-skill-card:hover { box-shadow: var(--shadow-md); }
.niv-skill-name {
  font-family: var(--font-body);
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-tertiary);
  margin-bottom: 12px;
}
.niv-skill-level {
  font-family: var(--font-headline);
  font-size: var(--font-size-xl);
  font-weight: 400;
  line-height: 1;
  margin-bottom: 6px;
  letter-spacing: -0.02em;
}
.niv-skill-score {
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  font-weight: 500;
}
.niv-skill-card.pending {
  opacity: 0.6;
}
.niv-skill-card.pending .niv-skill-level {
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  color: var(--text-tertiary);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* Strengths / weaknesses */
.niv-detail-section {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  border: none;
  padding: 24px;
  margin: 0 0 12px;
}
.niv-detail-title {
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 700;
  color: var(--text-tertiary);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
}
.niv-detail-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.niv-detail-list li {
  font-size: var(--font-size-base);
  color: var(--text-primary);
  padding: 12px 14px;
  background: var(--bg-section);
  border-radius: var(--radius-sm);
  line-height: 1.5;
}

/* CTA & share */
.niv-cta-section {
  padding: 24px 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
}
.niv-share-row {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
}
.niv-share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 18px;
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 700;
  background: var(--bg-card);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-pill);
  cursor: pointer;
  color: var(--text-secondary);
  transition: all var(--duration-fast);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.niv-share-btn:hover {
  background: rgba(200, 169, 126, 0.08);
  border-color: var(--gold);
  color: var(--text-primary);
}

/* Footer */
.niv-footer {
  padding: 32px 0;
  text-align: center;
  border-top: 1px solid var(--border-light);
  margin-top: 16px;
}
.niv-footer-text {
  font-size: var(--font-size-xs);
  color: var(--text-tertiary);
  line-height: 1.6;
}

/* === VALUE PROPS === */
.niv-props {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 24px 0;
}
.niv-prop {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 18px;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: none;
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--duration-normal);
}
.niv-prop:hover { box-shadow: var(--shadow-md); }
.niv-prop-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 16px;
}
.niv-prop-text h4 {
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}
.niv-prop-text p {
  font-size: var(--font-size-xs);
  color: var(--text-secondary);
  line-height: 1.5;
}

/* === INSTRUCTIONS STEPS === */
.niv-steps {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin: 24px 0;
}
.niv-step {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  opacity: 0;
  transform: translateY(8px);
  animation: stepIn 0.4s var(--ease-out) forwards;
}
.niv-step:nth-child(1) { animation-delay: 0.1s; }
.niv-step:nth-child(2) { animation-delay: 0.25s; }
.niv-step:nth-child(3) { animation-delay: 0.4s; }
.niv-step:nth-child(4) { animation-delay: 0.55s; }
@keyframes stepIn {
  to { opacity: 1; transform: translateY(0); }
}
.niv-step-num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--petrol);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-headline);
  font-size: var(--font-size-md);
  font-weight: 400;
  flex-shrink: 0;
  letter-spacing: -0.01em;
}
.niv-step-content h4 {
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 2px;
}
.niv-step-content p {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  line-height: 1.5;
}

/* === TOAST === */
.niv-toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(60px);
  padding: 14px 28px;
  background: var(--text-primary);
  color: var(--text-inverse);
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  font-weight: 500;
  border-radius: var(--radius-pill);
  opacity: 0;
  transition: all var(--duration-normal) var(--ease-spring);
  z-index: 200;
  max-width: 90vw;
  text-align: center;
  box-shadow: 0 8px 32px rgba(15, 25, 35, 0.20);
}
.niv-toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* === ERROR STATE === */
.niv-error-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 50vh;
  gap: 16px;
  text-align: center;
}
.niv-error-icon {
  font-size: 48px;
  opacity: 0.5;
}

/* === ANIMATIONS === */
@keyframes fadeIn {
  to { opacity: 1; }
}
@keyframes slideUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}
.animate-fade-in {
  opacity: 0;
  animation: fadeIn var(--duration-slow) var(--ease-out) forwards;
}
.animate-slide-up {
  animation: slideUp var(--duration-slow) var(--ease-out) forwards;
}
.animate-pulse {
  animation: pulse 2s ease-in-out infinite;
}

/* Stagger children */
.stagger > * {
  opacity: 0;
  animation: slideUp 0.5s var(--ease-out) forwards;
}
.stagger > *:nth-child(1) { animation-delay: 0.05s; }
.stagger > *:nth-child(2) { animation-delay: 0.1s; }
.stagger > *:nth-child(3) { animation-delay: 0.15s; }
.stagger > *:nth-child(4) { animation-delay: 0.2s; }
.stagger > *:nth-child(5) { animation-delay: 0.25s; }
.stagger > *:nth-child(6) { animation-delay: 0.3s; }
.stagger > *:nth-child(7) { animation-delay: 0.35s; }
.stagger > *:nth-child(8) { animation-delay: 0.4s; }

/* Level color utilities */
.level-a1 { color: var(--level-a1); }
.level-a2 { color: var(--level-a2); }
.level-b1 { color: var(--level-b1); }
.level-b2 { color: var(--level-b2); }
.level-c1 { color: var(--level-c1); }
.bg-level-a1 { background: var(--level-a1-bg); }
.bg-level-a2 { background: var(--level-a2-bg); }
.bg-level-b1 { background: var(--level-b1-bg); }
.bg-level-b2 { background: var(--level-b2-bg); }
.bg-level-c1 { background: var(--level-c1-bg); }

/* === RESPONSIVE === */
@media (max-width: 480px) {
  :root {
    --font-size-2xl: 28px;
    --font-size-3xl: 36px;
    --font-size-4xl: 52px;
  }
  .niv-container {
    padding: 0 16px;
  }
  .niv-question-passage {
    margin: 12px 16px;
    padding: 14px 16px;
    max-height: 180px;
    font-size: var(--font-size-sm);
  }
  .niv-options {
    padding: 8px 16px 20px;
  }
  .niv-question-enunciado {
    padding: 12px 16px;
  }
  .niv-question-header {
    padding: 16px 16px 0;
  }
  .niv-fill-blank {
    padding: 8px 16px 20px;
  }
  .niv-tf-options {
    padding: 8px 16px 20px;
  }
  .niv-writing-area {
    padding: 8px 16px 20px;
  }
  .niv-speaking-area {
    padding: 8px 16px 20px;
  }
  .niv-evaluating {
    margin: 12px 16px;
  }
  .niv-skills-grid {
    gap: 10px;
  }
  .niv-skill-card {
    padding: 16px 12px;
  }
  .niv-radar-wrap {
    padding: 20px;
  }
}

@media (min-width: 768px) {
  :root {
    --max-width: 680px;
  }
  .niv-result-hero {
    padding: 56px 0 40px;
  }
  .niv-level-reveal {
    width: 200px;
    height: 200px;
  }
}