/* ================================================================
   Brain Checker — AI Feedback System
   ORIGINAL LAYOUT · PASTEL WHITE THEME · ANIMATED FACE
   ================================================================ */

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

/* ── Tokens ────────────────────────────────────────────────────── */
:root {
  --bg-page:        #f4f7fb;
  --bg-card:        #ffffff;
  --bg-input:       #f0f4f9;
  --bg-input-focus: #eaf1ff;

  --teal:           #4db6ac;
  --teal-light:     #80cbc4;
  --teal-bg:        #e0f2f1;
  --teal-dark:      #00897b;

  --purple:         #9575cd;
  --purple-light:   #b39ddb;
  --purple-bg:      #ede7f6;

  --green:          #81c784;
  --green-light:    #a5d6a7;
  --green-bg:       #e8f5e9;
  --green-dark:     #388e3c;

  --rose:           #e57373;
  --rose-light:     #ef9a9a;
  --rose-bg:        #ffebee;

  --amber:          #ffb300;

  --star-off:       #dce8f0;
  --star-on:        #ffb300;

  --text-dark:      #1a2332;
  --text-mid:       #546e7a;
  --text-light:     #90a4ae;
  --text-muted:     #b0bec5;

  --border:         #e3eaf2;

  --shadow-card:    0 4px 24px rgba(0,0,0,0.08), 0 1px 4px rgba(0,0,0,0.04);
  --shadow-btn:     0 4px 14px rgba(77,182,172,0.35);
  --shadow-danger:  0 4px 14px rgba(229,115,115,0.35);

  --radius-card:  20px;
  --radius-btn:   12px;
  --radius-field: 10px;
}

/* ── Base ──────────────────────────────────────────────────────── */
html { scroll-behavior: smooth; }

body {
  font-family: 'Nunito Sans', system-ui, sans-serif;
  background: var(--bg-page);
  color: var(--text-mid);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 40px 16px 64px;
  background-image: radial-gradient(circle, #c8d8e8 1px, transparent 1px);
  background-size: 28px 28px;
}

/* ── Page Wrapper ──────────────────────────────────────────────── */
.page-wrapper {
  width: 100%;
  max-width: 580px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  animation: page-fade-in 0.6s ease both;
}
@keyframes page-fade-in {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Header ────────────────────────────────────────────────────── */
.site-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  animation: header-drop 0.7s cubic-bezier(0.22,1,0.36,1) both;
}
@keyframes header-drop {
  from { opacity: 0; transform: translateY(-20px); }
  to   { opacity: 1; transform: translateY(0); }
}
.logo-wrap { display: flex; align-items: center; justify-content: center; }
.logo-img {
  height: 200px;
  width: auto;
  object-fit: contain;
  animation: logo-float 4s ease-in-out infinite;
  filter: drop-shadow(0 4px 12px rgba(77,182,172,0.2));
}
@keyframes logo-float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-10px); }
}
.site-tagline {
  font-family: 'Syne', sans-serif;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--teal);
  background: var(--teal-bg);
  padding: 4px 14px;
  border-radius: 100px;
  border: 1px solid var(--teal-light);
}

/* ── Card ──────────────────────────────────────────────────────── */
.card {
  background: var(--bg-card);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border);
  padding: 40px 36px;
  position: relative;
  overflow: hidden;
  animation: card-rise 0.6s 0.1s cubic-bezier(0.22,1,0.36,1) both;
}
@keyframes card-rise {
  from { opacity: 0; transform: translateY(28px) scale(0.98); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
.card::before {
  content: '';
  position: absolute;
  top: 0; left: 12%; right: 12%;
  height: 3px;
  background: linear-gradient(90deg, var(--teal-light), var(--purple-light), var(--green-light));
  border-radius: 0 0 4px 4px;
  animation: shimmer-bar 3s ease-in-out infinite;
}
@keyframes shimmer-bar {
  0%, 100% { opacity: 0.7; transform: scaleX(1); }
  50%       { opacity: 1;   transform: scaleX(1.05); }
}

/* ── Step Bar ──────────────────────────────────────────────────── */
.step-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 32px;
}
.step-dot {
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--bg-input);
  border: 2px solid var(--border);
  transition: all 0.4s cubic-bezier(0.22,1,0.36,1);
  position: relative;
  flex-shrink: 0;
}
.step-dot.active {
  background: var(--teal);
  border-color: var(--teal);
  box-shadow: 0 0 0 4px var(--teal-bg);
  animation: dot-pulse 2s ease-in-out infinite;
}
@keyframes dot-pulse {
  0%,100% { box-shadow: 0 0 0 4px var(--teal-bg); }
  50%      { box-shadow: 0 0 0 7px rgba(77,182,172,0.15); }
}
.step-dot.done {
  background: var(--green);
  border-color: var(--green);
  box-shadow: 0 0 0 4px var(--green-bg);
}
.step-dot.done::after {
  content: '✓';
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 8px; color: #fff; font-weight: 800;
}
.step-line {
  width: 72px; height: 2px;
  background: var(--border);
  transition: background 0.5s ease;
  position: relative; overflow: hidden;
}
.step-line.done   { background: var(--green-light); }
.step-line.active { background: var(--teal-light); }
.step-line.active::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(90deg, var(--teal), var(--teal-light));
  animation: line-fill 0.6s ease forwards;
  transform-origin: left;
}
@keyframes line-fill {
  from { transform: scaleX(0); }
  to   { transform: scaleX(1); }
}

/* ── Form Step Visibility ──────────────────────────────────────── */
.form-step { display: none; }
.form-step.active {
  display: block;
  animation: step-slide-in 0.4s cubic-bezier(0.22,1,0.36,1) both;
}
@keyframes step-slide-in {
  from { opacity: 0; transform: translateX(24px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* ── Titles ────────────────────────────────────────────────────── */
.card-title {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 1.6rem;
  color: var(--text-dark);
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: 8px;
}
.card-subtitle {
  font-size: 0.9rem;
  color: var(--text-mid);
  line-height: 1.6;
  margin-bottom: 24px;
}

/* ── Badges ────────────────────────────────────────────────────── */
.step-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 14px;
  border-radius: 100px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 14px;
  animation: badge-pop 0.5s cubic-bezier(0.22,1,0.36,1) both;
}
@keyframes badge-pop {
  from { opacity: 0; transform: scale(0.8); }
  to   { opacity: 1; transform: scale(1); }
}
.step-badge--complaint {
  background: var(--rose-bg); color: var(--rose);
  border: 1px solid var(--rose-light);
}
.step-badge--review {
  background: var(--teal-bg); color: var(--teal-dark);
  border: 1px solid var(--teal-light);
}

/* ── Form Grid (2 col) ─────────────────────────────────────────── */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 20px;
}
@media (max-width: 500px) {
  .form-grid { grid-template-columns: 1fr 1fr; }
  .card { padding: 28px 18px; }
}

/* ── Fields ────────────────────────────────────────────────────── */
.field-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  animation: field-fade 0.5s ease both;
}
.form-grid .field-group:nth-child(1) { animation-delay: 0.05s; }
.form-grid .field-group:nth-child(2) { animation-delay: 0.12s; }
@keyframes field-fade {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.field-label {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-light);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.req      { color: var(--teal); }
.edit-hint {
  color: var(--text-muted);
  font-weight: 400;
  font-size: 0.72rem;
  text-transform: none;
  letter-spacing: 0;
  font-style: italic;
}

.field-input {
  width: 100%;
  background: var(--bg-input);
  border: 1.5px solid transparent;
  border-radius: var(--radius-field);
  color: var(--text-dark);
  font-family: 'Nunito Sans', sans-serif;
  font-size: 0.95rem;
  padding: 11px 14px;
  outline: none;
  transition: border-color 0.25s, background 0.25s, box-shadow 0.25s, transform 0.15s;
  -webkit-appearance: none;
}
.field-input::placeholder { color: var(--text-muted); }
.field-input:focus {
  border-color: var(--teal-light);
  background: var(--bg-input-focus);
  box-shadow: 0 0 0 3px rgba(77,182,172,0.12);
  transform: translateY(-1px);
}
.field-input:hover:not(:focus) { border-color: var(--teal-bg); }
.field-input.error { border-color: var(--rose); }

.field-textarea { resize: vertical; min-height: 120px; line-height: 1.6; }
.field-textarea--review {
  background: var(--purple-bg);
  border-color: var(--purple-light);
  font-style: italic;
  color: var(--text-dark);
}
.field-textarea--review:focus {
  border-color: var(--purple);
  box-shadow: 0 0 0 3px rgba(149,117,205,0.12);
}

.char-row { text-align: right; font-size: 12px; color: var(--text-muted); margin-top: 4px; }

.field-error {
  font-size: 0.73rem;
  color: var(--rose);
  min-height: 16px;
  display: block;
  animation: err-shake 0.3s ease;
}
@keyframes err-shake {
  0%,100% { transform: translateX(0); }
  25%      { transform: translateX(-4px); }
  75%      { transform: translateX(4px); }
}

/* ─────────────────────────────────────────────────────────────────
   ★  ANIMATED EXPRESSION FACE
   ───────────────────────────────────────────────────────────────── */
.rating-group { margin-bottom: 28px; animation: field-fade 0.5s 0.2s ease both; }

.face-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  margin-bottom: 16px;
}

/* ── WhatsApp-style 3D emoji face ─────────────────────────────── */
.face-svg {
  width: 120px;
  height: 120px;
  overflow: visible;
  transition: transform 0.35s cubic-bezier(0.22,1,0.36,1);
}

/* Smooth transitions on all SVG parts */
.face-svg circle,
.face-svg ellipse,
.face-svg path,
.face-svg text,
.face-svg rect,
.face-svg g {
  transition: opacity 0.4s ease,
              fill    0.4s ease,
              stroke  0.4s ease;
}
/* The emoji rendered by Twemoji as a real SVG image */
.face-emoji-box {
  width: 88px;
  height: 88px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 80px;    /* fallback if Twemoji doesn't load */
  line-height: 1;
  transition: transform 0.35s cubic-bezier(0.22,1,0.36,1);
}

/* Twemoji renders an <img> inside — style it */
.face-emoji-box img {
  width: 88px !important;
  height: 88px !important;
  display: block;
  transition: transform 0.35s cubic-bezier(0.22,1,0.36,1),
              filter 0.35s ease;
  /* 3D depth layers */
  filter:
    drop-shadow(0px 4px 0px rgba(0,0,0,0.10))
    drop-shadow(0px 8px 10px rgba(0,0,0,0.12))
    drop-shadow(0px 1px 0px rgba(255,255,255,0.6));
}

/* Face bounce when rating changes */
.face-svg.bounce {
  animation: face-bounce 0.5s cubic-bezier(0.22,1,0.36,1);
}
@keyframes face-bounce {
  0%   { transform: scale(1) rotate(0deg); }
  30%  { transform: scale(1.22) rotate(-6deg); }
  60%  { transform: scale(0.93) rotate(3deg); }
  80%  { transform: scale(1.06) rotate(-2deg); }
  100% { transform: scale(1) rotate(0deg); }
}

/* Shake for 1-star sad face */
.face-svg.shake {
  animation: face-shake 0.55s ease;
}
@keyframes face-shake {
  0%,100% { transform: translateX(0) rotate(0deg); }
  15%      { transform: translateX(-7px) rotate(-3deg); }
  30%      { transform: translateX(7px) rotate(3deg); }
  45%      { transform: translateX(-5px) rotate(-2deg); }
  60%      { transform: translateX(5px) rotate(2deg); }
  75%      { transform: translateX(-3px) rotate(-1deg); }
}

/* Tada spin for 5-star excellent */
.face-svg.tada {
  animation: face-tada 0.65s cubic-bezier(0.22,1,0.36,1);
}
@keyframes face-tada {
  0%   { transform: scale(1) rotate(0deg); }
  15%  { transform: scale(0.9) rotate(-6deg); }
  30%  { transform: scale(1.3) rotate(6deg); }
  45%  { transform: scale(1.25) rotate(-4deg); }
  60%  { transform: scale(1.2) rotate(4deg); }
  75%  { transform: scale(1.1) rotate(-2deg); }
  100% { transform: scale(1) rotate(0deg); }
}

.face-label {
  font-family: 'Syne', sans-serif;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-light);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: color 0.35s ease;
  min-height: 20px;
}

/* ─── Star buttons ─────────────────────────────────────────────── */
.stars-wrap { display: flex; gap: 8px; margin-top: 2px; }

.star {
  font-size: 2.2rem;
  color: var(--star-off);
  background: none;
  border: none;
  cursor: pointer;
  line-height: 1;
  padding: 2px;
  user-select: none;
  transition: color 0.15s ease, transform 0.2s cubic-bezier(0.22,1,0.36,1);
}
.star:hover,
.star.hovered { color: var(--amber); transform: scale(1.25) rotate(-5deg); }
.star.selected {
  color: var(--amber);
  transform: scale(1.15);
  filter: drop-shadow(0 2px 6px rgba(255,179,0,0.45));
  animation: star-bounce 0.35s cubic-bezier(0.22,1,0.36,1);
}
@keyframes star-bounce {
  0%   { transform: scale(1); }
  50%  { transform: scale(1.45); }
  100% { transform: scale(1.15); }
}

.rating-label {
  font-size: 0.82rem;
  color: var(--text-light);
  margin-top: 6px;
  transition: color 0.2s;
  min-height: 20px;
}

/* ── Buttons ───────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 24px;
  border-radius: var(--radius-btn);
  font-family: 'Nunito Sans', sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  border: none;
  transition: all 0.22s cubic-bezier(0.22,1,0.36,1);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}
.btn::after {
  content: '';
  position: absolute; inset: 0;
  background: rgba(255,255,255,0.25);
  border-radius: inherit;
  opacity: 0; transform: scale(0);
  transition: transform 0.4s ease, opacity 0.4s ease;
}
.btn:active::after { transform: scale(2.5); opacity: 1; transition: 0s; }
.btn:disabled { opacity: 0.55; cursor: not-allowed; pointer-events: none; }

.btn--primary {
  background: linear-gradient(135deg, var(--teal), var(--teal-dark));
  color: #fff;
  width: 100%;
  box-shadow: var(--shadow-btn);
  animation: btn-appear 0.5s 0.3s ease both;
}
@keyframes btn-appear {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
.btn--primary:hover {
  background: linear-gradient(135deg, #26a69a, var(--teal-dark));
  box-shadow: 0 6px 20px rgba(77,182,172,0.45);
  transform: translateY(-2px);
}
.btn--primary:active { transform: translateY(0); }

.btn--danger {
  background: linear-gradient(135deg, var(--rose), #c62828);
  color: #fff;
  box-shadow: var(--shadow-danger);
  flex: 1;
}
.btn--danger:hover {
  background: linear-gradient(135deg, #ef5350, #b71c1c);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(229,115,115,0.45);
}

.btn--ghost {
  background: transparent;
  color: var(--text-light);
  border: 1.5px solid var(--border);
}
.btn--ghost:hover {
  border-color: var(--teal-light);
  color: var(--teal-dark);
  background: var(--teal-bg);
}

.btn--copy {
  background: var(--green-bg);
  color: var(--green-dark);
  border: 1.5px solid var(--green-light);
  width: 100%;
  margin-top: 12px;
}
.btn--copy:hover { background: var(--green-light); color: #fff; transform: translateY(-1px); }
.btn--copy.copied { background: var(--green); color: #fff; border-color: var(--green); }

.btn--sm { padding: 10px 20px; font-size: 0.85rem; margin-top: 16px; }
.btn-icon { flex-shrink: 0; transition: transform 0.2s ease; }
.btn--primary:hover .btn-icon { transform: translateX(3px); }

.btn-row { display: flex; gap: 12px; align-items: center; margin-top: 20px; }
.btn-row .btn--ghost { flex-shrink: 0; }

.btn-spinner {
  width: 18px; height: 18px;
  border: 2.5px solid rgba(255,255,255,0.35);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  flex-shrink: 0;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── AI Loading ────────────────────────────────────────────────── */
.ai-loading {
  display: flex; flex-direction: column;
  align-items: center; gap: 20px; padding: 44px 0;
}
.ai-pulse {
  color: var(--teal);
  animation: ai-breathe 1.8s ease-in-out infinite;
}
@keyframes ai-breathe {
  0%,100% { transform: scale(1);    filter: drop-shadow(0 0 8px  rgba(77,182,172,0.3)); }
  50%      { transform: scale(1.1); filter: drop-shadow(0 0 18px rgba(77,182,172,0.6)); }
}
.ai-loading-text { font-size: 0.9rem; color: var(--text-light); font-style: italic; }
.dots::after {
  content: '';
  animation: dots-cycle 1.6s steps(4,end) infinite;
}
@keyframes dots-cycle {
  0%  { content: ''; }   25% { content: '.'; }
  50% { content: '..'; } 75% { content: '...'; }
}

/* ── AI Error ──────────────────────────────────────────────────── */
.ai-error {
  text-align: center; padding: 32px; color: var(--rose);
  display: flex; flex-direction: column; align-items: center;
  gap: 16px; font-size: 0.9rem;
  animation: step-slide-in 0.3s ease both;
}

/* ── Success ───────────────────────────────────────────────────── */
#step-3 { text-align: center; padding: 8px 0; }

.success-icon {
  color: var(--green);
  display: flex; justify-content: center;
  margin-bottom: 20px;
  animation: success-pop 0.6s cubic-bezier(0.22,1,0.36,1) both;
}
@keyframes success-pop {
  0%   { opacity: 0; transform: scale(0.3) rotate(-20deg); }
  70%  { transform: scale(1.1) rotate(3deg); }
  100% { opacity: 1; transform: scale(1) rotate(0deg); }
}
.checkmark {
  stroke-dasharray: 60; stroke-dashoffset: 60;
  animation: draw-check 0.6s 0.4s ease forwards;
}
@keyframes draw-check { to { stroke-dashoffset: 0; } }

.copied-review-preview {
  background: var(--purple-bg);
  border: 1px solid var(--purple-light);
  border-radius: var(--radius-field);
  padding: 16px;
  font-size: 0.88rem; color: var(--text-mid);
  text-align: left; line-height: 1.7;
  font-style: italic; margin-bottom: 4px;
  animation: field-fade 0.4s ease both;
}
.redirect-notice { font-size: 0.8rem; color: var(--text-muted); margin-top: 10px; }
.redirect-notice span { color: var(--teal-dark); font-weight: 700; }

/* ── Utility ───────────────────────────────────────────────────── */
.hidden { display: none !important; }

/* ── Footer ────────────────────────────────────────────────────── */
.site-footer {
  text-align: center;
  font-size: 0.73rem; color: var(--text-muted); letter-spacing: 0.04em;
  animation: page-fade-in 0.6s 0.4s ease both;
}

/* ── Toast ─────────────────────────────────────────────────────── */
.toast {
  position: fixed; bottom: 28px; left: 50%;
  transform: translateX(-50%) translateY(16px);
  background: var(--text-dark); color: #fff;
  padding: 11px 22px; border-radius: 100px;
  font-size: 0.84rem; font-weight: 600;
  box-shadow: 0 8px 28px rgba(0,0,0,0.15);
  opacity: 0; pointer-events: none; z-index: 9999;
  transition: all 0.3s cubic-bezier(0.22,1,0.36,1);
  white-space: nowrap;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }