/* ═══════════════════════════════════════════════════════════════
   Kraken Survey — Design System
   Brand: Kraken (#0B2239, #0F766E, #E85D2A)
   Fonts: Asap (headings), Roboto (body)
   ═══════════════════════════════════════════════════════════════ */

:root {
  --k-primary: #0B2239;
  --k-secondary: #0F766E;
  --k-orange: #E85D2A;
  --k-dark: #031A28;

  --k-bg: #F0F6F5;
  --k-surface: #FFFFFF;
  --k-border: #E2E8F0;
  --k-text: #0B2239;
  --k-text-secondary: #64748B;
  --k-text-muted: #94A3B8;

  --k-success: #15803D;
  --k-success-bg: #ECFDF5;
  --k-warning: #B45309;
  --k-error: #B91C1C;

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

  --k-shadow-sm: 0 1px 3px rgba(0,0,0,0.04);
  --k-shadow-md: 0 4px 12px rgba(0,0,0,0.06);
  --k-shadow-lg: 0 12px 40px rgba(0,0,0,0.08);
  --k-shadow-glow: 0 0 20px rgba(15,118,110,0.15);

  --k-transition: 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
  --k-transition-ease: 0.3s ease;

  --font-heading: 'Asap', sans-serif;
  --font-body: 'Roboto', sans-serif;
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  color: var(--k-text);
  background: var(--k-bg);
  min-height: 100dvh;
  overflow-x: hidden;
}

/* ─── App Container ─────────────────────────────────────────── */
.app {
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
  position: relative;
}

/* ─── Background Blobs ──────────────────────────────────────── */
.bg-blob {
  position: fixed;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
  animation: blobFloat 20s ease-in-out infinite;
}

.blob-1 {
  width: 500px;
  height: 500px;
  background: rgba(15,118,110,0.12);
  top: -150px;
  right: -100px;
  animation-delay: 0s;
}

.blob-2 {
  width: 400px;
  height: 400px;
  background: rgba(232,93,42,0.07);
  bottom: -100px;
  left: -100px;
  animation-delay: -7s;
}

.blob-3 {
  width: 350px;
  height: 350px;
  background: rgba(11,34,57,0.06);
  top: 40%;
  left: 50%;
  animation-delay: -14s;
}

@keyframes blobFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(30px, -20px) scale(1.05); }
  50% { transform: translate(-20px, 30px) scale(0.95); }
  75% { transform: translate(15px, 15px) scale(1.02); }
}

/* ─── Header ────────────────────────────────────────────────── */
.header {
  padding: 1.25rem 1.5rem;
  z-index: 10;
  position: relative;
}

.header-inner {
  max-width: 640px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-logo {
  height: 28px;
  opacity: 0.9;
  transition: opacity var(--k-transition-ease);
}

.header-logo:hover {
  opacity: 1;
}

.header-badge {
  font-family: var(--font-heading);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--k-secondary);
  background: rgba(15,118,110,0.08);
  padding: 0.3rem 0.8rem;
  border-radius: var(--k-radius-pill);
  border: 1px solid rgba(15,118,110,0.15);
}

/* ─── Progress Bar ──────────────────────────────────────────── */
.progress-wrapper {
  max-width: 640px;
  margin: 0 auto;
  padding: 0 1.5rem;
  z-index: 10;
  position: relative;
}

.progress-bar {
  height: 4px;
  background: rgba(11,34,57,0.06);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 1rem;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--k-secondary), #14b8a6);
  border-radius: 4px;
  width: 0%;
  transition: width 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.progress-steps {
  display: flex;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.progress-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  flex: 1;
}

.step-dot {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(11,34,57,0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--k-transition);
  border: 2px solid transparent;
}

.step-dot span {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--k-text-muted);
  transition: color var(--k-transition);
}

.progress-step.active .step-dot {
  background: var(--k-secondary);
  border-color: var(--k-secondary);
  box-shadow: 0 0 0 4px rgba(15,118,110,0.15);
  transform: scale(1.1);
}

.progress-step.active .step-dot span {
  color: white;
}

.progress-step.completed .step-dot {
  background: var(--k-secondary);
  border-color: var(--k-secondary);
}

.progress-step.completed .step-dot span {
  color: white;
}

.step-label {
  font-size: 0.7rem;
  color: var(--k-text-muted);
  font-weight: 500;
  transition: color var(--k-transition-ease);
}

.progress-step.active .step-label {
  color: var(--k-secondary);
  font-weight: 600;
}

.progress-step.completed .step-label {
  color: var(--k-text-secondary);
}

/* ─── Main Content ──────────────────────────────────────────── */
.main {
  flex: 1;
  max-width: 640px;
  width: 100%;
  margin: 0 auto;
  padding: 0 1.5rem 2rem;
  z-index: 10;
  position: relative;
}

/* ─── Card ──────────────────────────────────────────────────── */
.card {
  background: rgba(255,255,255,0.75);
  backdrop-filter: blur(20px) saturate(1.8);
  -webkit-backdrop-filter: blur(20px) saturate(1.8);
  border-radius: var(--k-radius-xl);
  border: 1px solid rgba(255,255,255,0.6);
  box-shadow: var(--k-shadow-lg), inset 0 1px 0 rgba(255,255,255,0.9);
  padding: 2.5rem 2rem;
  animation: cardIn 0.5s ease-out;
}

@keyframes cardIn {
  from {
    opacity: 0;
    transform: translateY(16px) scale(0.97);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* ─── Steps ─────────────────────────────────────────────────── */
.step {
  display: none;
}

.step-active {
  display: block;
}

/* ─── Welcome Step ──────────────────────────────────────────── */
.welcome-card {
  text-align: center;
}

.welcome-icon {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--k-secondary), #14b8a6);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  box-shadow: 0 8px 24px rgba(15,118,110,0.25);
  animation: iconPulse 3s ease-in-out infinite;
}

.welcome-icon i {
  font-size: 1.6rem;
  color: white;
}

@keyframes iconPulse {
  0%, 100% { box-shadow: 0 8px 24px rgba(15,118,110,0.25); }
  50% { box-shadow: 0 8px 32px rgba(15,118,110,0.35); }
}

.welcome-title {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--k-primary);
  margin-bottom: 0.75rem;
  letter-spacing: -0.02em;
}

.welcome-subtitle {
  font-size: 1.05rem;
  color: var(--k-text);
  margin-bottom: 0.5rem;
  line-height: 1.6;
}

.welcome-description {
  font-size: 0.95rem;
  color: var(--k-text-secondary);
  margin-bottom: 2rem;
  line-height: 1.6;
}

.welcome-info {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.info-item {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.82rem;
  color: var(--k-text-secondary);
  background: rgba(11,34,57,0.03);
  padding: 0.45rem 0.85rem;
  border-radius: var(--k-radius-pill);
  border: 1px solid rgba(11,34,57,0.06);
}

.info-item i {
  color: var(--k-secondary);
  font-size: 0.8rem;
}

/* ─── Buttons ───────────────────────────────────────────────── */
.btn {
  font-family: var(--font-heading);
  font-size: 0.92rem;
  font-weight: 600;
  padding: 0.75rem 1.75rem;
  border-radius: var(--k-radius-md);
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: all var(--k-transition);
  position: relative;
  overflow: hidden;
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  background: linear-gradient(135deg, var(--k-secondary), #0e9a8f);
  color: white;
  box-shadow: 0 4px 12px rgba(15,118,110,0.3);
}

.btn-primary:hover {
  box-shadow: 0 6px 20px rgba(15,118,110,0.4);
  transform: translateY(-1px);
}

.btn-action {
  background: linear-gradient(135deg, var(--k-orange), #f67b4f);
  color: white;
  box-shadow: 0 4px 12px rgba(232,93,42,0.3);
}

.btn-action:hover {
  box-shadow: 0 6px 20px rgba(232,93,42,0.4);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--k-text-secondary);
  border: 1.5px solid var(--k-border);
}

.btn-outline:hover {
  border-color: var(--k-secondary);
  color: var(--k-secondary);
  background: rgba(15,118,110,0.04);
}

.btn-lg {
  padding: 0.9rem 2.5rem;
  font-size: 1rem;
  border-radius: var(--k-radius-lg);
}

.btn-group {
  display: flex;
  justify-content: space-between;
  margin-top: 2rem;
  gap: 0.75rem;
}

/* ─── Question Header ───────────────────────────────────────── */
.question-badge {
  font-family: var(--font-heading);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--k-secondary);
  background: rgba(15,118,110,0.08);
  padding: 0.3rem 0.7rem;
  border-radius: var(--k-radius-pill);
  display: inline-block;
  margin-bottom: 1rem;
}

.question-title {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--k-primary);
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}

.question-desc {
  font-size: 0.9rem;
  color: var(--k-text-secondary);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

/* ─── Ranking List (Drag and Drop) ──────────────────────────── */
.ranking-instruction {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.78rem;
  color: var(--k-text-muted);
  margin-bottom: 1rem;
  padding: 0.5rem 0.75rem;
  background: rgba(15,118,110,0.04);
  border-radius: var(--k-radius-md);
  border: 1px dashed rgba(15,118,110,0.15);
}

.ranking-instruction i {
  color: var(--k-secondary);
  animation: bounceHand 2s ease-in-out infinite;
}

@keyframes bounceHand {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-3px); }
}

.ranking-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.ranking-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1rem;
  background: var(--k-surface);
  border-radius: var(--k-radius-md);
  border: 1.5px solid var(--k-border);
  cursor: grab;
  transition: all var(--k-transition);
  user-select: none;
  -webkit-user-select: none;
}

.ranking-item:hover {
  border-color: rgba(15,118,110,0.3);
  box-shadow: var(--k-shadow-md);
  transform: translateY(-1px);
}

.ranking-item.dragging {
  opacity: 0.5;
  transform: scale(0.98);
  border-color: var(--k-secondary);
  box-shadow: var(--k-shadow-glow);
}

.ranking-item.drag-over {
  border-color: var(--k-secondary);
  background: rgba(15,118,110,0.04);
  transform: scale(1.02);
}

.ranking-handle {
  color: var(--k-text-muted);
  font-size: 0.85rem;
  cursor: grab;
  padding: 0.2rem;
}

.ranking-number {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--k-secondary), #14b8a6);
  color: white;
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--k-transition);
}

.ranking-content {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex: 1;
}

.ranking-icon {
  color: var(--k-secondary);
  font-size: 1rem;
  opacity: 0.7;
}

.ranking-label {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--k-text);
}

.ranking-drag-hint {
  color: var(--k-text-muted);
  font-size: 0.75rem;
  opacity: 0;
  transition: opacity var(--k-transition-ease);
}

.ranking-item:hover .ranking-drag-hint {
  opacity: 0.6;
}

/* ─── Options (Radio Cards) ─────────────────────────────────── */
.options-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.option-card {
  cursor: pointer;
}

.option-card input[type="radio"] {
  display: none;
}

.option-inner {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 1rem 1.15rem;
  background: var(--k-surface);
  border-radius: var(--k-radius-md);
  border: 1.5px solid var(--k-border);
  transition: all var(--k-transition);
}

.option-card:hover .option-inner {
  border-color: rgba(15,118,110,0.3);
  box-shadow: var(--k-shadow-md);
  transform: translateY(-1px);
}

.option-card input:checked + .option-inner {
  border-color: var(--k-secondary);
  background: rgba(15,118,110,0.04);
  box-shadow: 0 0 0 3px rgba(15,118,110,0.1);
}

.option-radio {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid var(--k-border);
  flex-shrink: 0;
  position: relative;
  transition: all var(--k-transition);
}

.option-card input:checked + .option-inner .option-radio {
  border-color: var(--k-secondary);
  background: var(--k-secondary);
}

.option-card input:checked + .option-inner .option-radio::after {
  content: '';
  position: absolute;
  width: 8px;
  height: 8px;
  background: white;
  border-radius: 50%;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation: radioIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes radioIn {
  from { transform: translate(-50%, -50%) scale(0); }
  to { transform: translate(-50%, -50%) scale(1); }
}

.option-icon {
  color: var(--k-secondary);
  font-size: 1rem;
  opacity: 0.7;
}

.option-card input:checked + .option-inner .option-icon {
  opacity: 1;
}

.option-label {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--k-text);
}

/* ─── Validation ────────────────────────────────────────────── */
.validation-msg {
  display: none;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.82rem;
  color: var(--k-error);
  margin-top: 1rem;
  padding: 0.5rem 0.75rem;
  background: #FEF2F2;
  border-radius: var(--k-radius-sm);
  animation: shake 0.4s ease;
}

.validation-msg.show {
  display: flex;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-6px); }
  50% { transform: translateX(6px); }
  75% { transform: translateX(-3px); }
}

/* ─── Thank You ─────────────────────────────────────────────── */
.thank-card {
  text-align: center;
}

.thank-icon {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, #15803D, #22c55e);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  box-shadow: 0 8px 24px rgba(21,128,61,0.25);
  animation: thankPop 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.thank-icon i {
  font-size: 2rem;
  color: white;
}

@keyframes thankPop {
  from { transform: scale(0); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.thank-title {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--k-primary);
  margin-bottom: 0.5rem;
}

.thank-subtitle {
  font-size: 0.95rem;
  color: var(--k-text-secondary);
  margin-bottom: 2rem;
}

/* ─── Results Summary ───────────────────────────────────────── */
.results-summary {
  text-align: left;
  background: rgba(11,34,57,0.02);
  border-radius: var(--k-radius-lg);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  border: 1px solid rgba(11,34,57,0.06);
}

.results-heading {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--k-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 1.25rem;
}

.result-section {
  margin-bottom: 1.25rem;
}

.result-section:last-child {
  margin-bottom: 0;
}

.result-label {
  font-family: var(--font-heading);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--k-text-muted);
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.result-ranking {
  list-style: none;
  counter-reset: rank;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.result-ranking li {
  counter-increment: rank;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.88rem;
  color: var(--k-text);
  padding: 0.35rem 0;
}

.result-ranking li::before {
  content: counter(rank);
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--k-secondary);
  color: white;
  font-family: var(--font-heading);
  font-size: 0.7rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.result-motivation {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--k-secondary);
  background: rgba(15,118,110,0.08);
  padding: 0.5rem 1rem;
  border-radius: var(--k-radius-pill);
}

/* ─── Stats Card ────────────────────────────────────────────── */
.stats-card {
  text-align: left;
  background: rgba(11,34,57,0.03);
  border-radius: var(--k-radius-lg);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.5rem;
  border: 1px solid rgba(11,34,57,0.06);
}

.stats-title {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--k-text-secondary);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.stats-title i {
  color: var(--k-secondary);
}

.stats-grid {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.stat-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--k-text);
  min-width: 130px;
  flex-shrink: 0;
}

.stat-bar-wrapper {
  flex: 1;
  height: 24px;
  background: rgba(11,34,57,0.04);
  border-radius: var(--k-radius-sm);
  overflow: hidden;
  position: relative;
}

.stat-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--k-secondary), #14b8a6);
  border-radius: var(--k-radius-sm);
  transition: width 1s cubic-bezier(0.34, 1.56, 0.64, 1);
  min-width: 2px;
}

.stat-value {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--k-text-secondary);
  min-width: 32px;
  text-align: right;
}

.stats-total {
  font-size: 0.78rem;
  color: var(--k-text-muted);
  margin-top: 0.75rem;
  text-align: center;
}

/* ─── Footer ────────────────────────────────────────────────── */
.footer {
  padding: 1.25rem;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  z-index: 10;
  position: relative;
}

.footer span {
  font-size: 0.72rem;
  color: var(--k-text-muted);
  font-weight: 400;
}

.footer-logo {
  height: 16px;
  opacity: 0.4;
  transition: opacity var(--k-transition-ease);
}

.footer:hover .footer-logo {
  opacity: 0.7;
}

/* ─── Focus States (Accessibility) ──────────────────────────── */
.btn:focus-visible,
.option-card:focus-visible .option-inner {
  outline: 3px solid rgba(15,118,110,0.5);
  outline-offset: 2px;
}

/* ─── Confetti ──────────────────────────────────────────────── */
.confetti-piece {
  position: fixed;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  z-index: 1000;
  pointer-events: none;
  animation: confettiFall 2.5s ease-in forwards;
}

@keyframes confettiFall {
  0% {
    opacity: 1;
    transform: translateY(0) rotate(0deg);
  }
  100% {
    opacity: 0;
    transform: translateY(100vh) rotate(720deg);
  }
}

/* ─── Responsive ────────────────────────────────────────────── */
@media (max-width: 480px) {
  .card {
    padding: 1.75rem 1.25rem;
    border-radius: var(--k-radius-lg);
  }

  .welcome-title {
    font-size: 1.45rem;
  }

  .question-title {
    font-size: 1.2rem;
  }

  .welcome-info {
    gap: 0.75rem;
  }

  .btn-group {
    flex-direction: column-reverse;
  }

  .btn-group .btn {
    width: 100%;
    justify-content: center;
  }

  .ranking-item {
    padding: 0.75rem 0.85rem;
  }

  .stat-label {
    min-width: 100px;
    font-size: 0.72rem;
  }

  .progress-steps {
    display: none;
  }

  .blob-1 {
    width: 300px;
    height: 300px;
  }

  .blob-2 {
    width: 250px;
    height: 250px;
  }

  .blob-3 {
    width: 200px;
    height: 200px;
  }
}

/* ─── Touch Device Adjustments ──────────────────────────────── */
@media (hover: none) {
  .ranking-drag-hint {
    opacity: 0.5;
  }
  
  .ranking-item:hover {
    transform: none;
    box-shadow: none;
  }
}

/* ─── Print ─────────────────────────────────────────────────── */
@media print {
  .bg-blob,
  .progress-wrapper,
  .btn,
  .footer {
    display: none !important;
  }

  .card {
    box-shadow: none;
    border: 1px solid #ddd;
  }
}