/* ─── KintonAI Analyzer – Design System ───────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ─── Variables ──────────────────────────────────────────────────────────────── */
:root {
  --bg-base: #080b14;
  --bg-surface: #0d1120;
  --bg-card: rgba(255, 255, 255, 0.04);
  --bg-card-hover: rgba(255, 255, 255, 0.07);
  --border: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(139, 92, 246, 0.4);

  --yellow: #facc15;
  --yellow-glow: rgba(250, 204, 21, 0.3);

  --accent: #8b5cf6;
  --accent-light: #a78bfa;
  --accent-dark: #6d28d9;
  --cyan: #06b6d4;
  --pink: #ec4899;
  --green: #10b981;
  --orange: #f59e0b;
  --red: #ef4444;

  --grad-hero: linear-gradient(135deg, #facc15 0%, #8b5cf6 50%, #06b6d4 100%);
  --grad-card: linear-gradient(145deg, rgba(250, 204, 21, 0.1), rgba(139, 92, 246, 0.1));
  --grad-btn: linear-gradient(135deg, #facc15, #eab308);

  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #475569;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-pill: 9999px;

  --shadow-glow: 0 0 40px rgba(139, 92, 246, 0.25);
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4);
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ─── Background mesh ────────────────────────────────────────────────────────── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse 80% 50% at 20% -10%, rgba(139, 92, 246, 0.18) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 80% 110%, rgba(6, 182, 212, 0.12) 0%, transparent 60%),
    radial-gradient(ellipse 50% 30% at 50% 50%, rgba(236, 72, 153, 0.06) 0%, transparent 60%);
}

/* ─── Typography ─────────────────────────────────────────────────────────────── */
h1,
h2,
h3,
h4 {
  font-weight: 700;
  line-height: 1.2;
}

h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
}

h2 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
}

h3 {
  font-size: 1.25rem;
}

p {
  color: var(--text-secondary);
}

.gradient-text {
  background: var(--grad-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ─── Layout ─────────────────────────────────────────────────────────────────── */
.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.container--wide {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* ─── Nav ────────────────────────────────────────────────────────────────────── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(8, 11, 20, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  padding: 0 1.25rem;
}

.nav__inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.nav__logo {
  font-size: 1.4rem;
  font-weight: 800;
  text-decoration: none;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.4rem;
  letter-spacing: -0.02em;
}

.nav__logo span {
  color: var(--yellow);
}

.nav__logo-img {
  height: 1.1em;
  width: auto;
  object-fit: contain;
}

.text-yellow {
  color: var(--yellow);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav__credits-badge {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  padding: 0.25rem 0.75rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent-light);
}

/* ─── Buttons ────────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.6rem 1.25rem;
  border: none;
  border-radius: var(--radius-pill);
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition);
  white-space: nowrap;
}

.btn--primary {
  background: var(--grad-btn);
  color: #fff;
  box-shadow: 0 4px 20px rgba(139, 92, 246, 0.4);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(139, 92, 246, 0.6);
}

.btn--ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
}

.btn--ghost:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
}

.btn--sm {
  padding: 0.4rem 0.9rem;
  font-size: 0.8rem;
}

.btn--lg {
  padding: 0.85rem 2rem;
  font-size: 1.05rem;
}

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

.btn--cyan {
  background: linear-gradient(135deg, var(--cyan), #0891b2);
  color: #fff;
  box-shadow: 0 4px 20px rgba(6, 182, 212, 0.35);
}

.btn--cyan:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(6, 182, 212, 0.55);
}

.btn:disabled {
  opacity: 0.5;
  pointer-events: none;
}

/* ─── Card / Glass ───────────────────────────────────────────────────────────── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  backdrop-filter: blur(12px);
  transition: var(--transition);
}

.card:hover {
  border-color: var(--border-glow);
  box-shadow: var(--shadow-glow);
}

.card--glow {
  background: var(--grad-card);
  border-color: rgba(139, 92, 246, 0.25);
}

/* ─── Form elements ──────────────────────────────────────────────────────────── */
.label {
  display: block;
  margin-bottom: 0.4rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.input,
.textarea,
.select {
  width: 100%;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.95rem;
  padding: 0.75rem 1rem;
  transition: var(--transition);
  outline: none;
}

.input::placeholder,
.textarea::placeholder {
  color: var(--text-muted);
}

.input:focus,
.textarea:focus,
.select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.2);
  background: rgba(255, 255, 255, 0.06);
}

.textarea {
  resize: vertical;
  min-height: 200px;
  line-height: 1.7;
}

.select {
  cursor: pointer;
}

.select option {
  background: var(--bg-surface);
}

/* ─── Tabs ───────────────────────────────────────────────────────────────────── */
.tabs {
  display: flex;
  background: var(--bg-card);
  border-radius: var(--radius-pill);
  padding: 4px;
  gap: 4px;
}

.tab {
  flex: 1;
  padding: 0.55rem 1rem;
  border: none;
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--text-secondary);
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
}

.tab.active {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 2px 10px rgba(139, 92, 246, 0.4);
}

/* ─── Toggle (Person Selector) ───────────────────────────────────────────────── */
.person-toggle {
  display: flex;
  gap: 0.75rem;
}

.person-btn {
  flex: 1;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
}

.person-btn.active {
  background: rgba(139, 92, 246, 0.2);
  border-color: var(--accent);
  color: var(--accent-light);
}

/* ─── Spinner ────────────────────────────────────────────────────────────────── */
.spinner-wrap {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  padding: 3rem;
}

.spinner-wrap.active {
  display: flex;
}

.spinner {
  width: 52px;
  height: 52px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.spinner-text {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ─── Accordion ──────────────────────────────────────────────────────────────── */
.accordion {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.accordion-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

.accordion-item:hover {
  border-color: rgba(139, 92, 246, 0.3);
}

.accordion-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  cursor: pointer;
  user-select: none;
  background: transparent;
  border: none;
  width: 100%;
  color: var(--text-primary);
  font-family: inherit;
  text-align: left;
}

.accordion-header:hover {
  background: rgba(255, 255, 255, 0.03);
}

.accordion-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 700;
  background: rgba(139, 92, 246, 0.15);
  color: var(--accent-light);
  flex-shrink: 0;
}

.accordion-title {
  font-weight: 600;
  font-size: 0.95rem;
  flex: 1;
  margin: 0 0.75rem;
}

.accordion-chevron {
  color: var(--text-muted);
  transition: transform var(--transition);
  flex-shrink: 0;
}

.accordion-item.open .accordion-chevron {
  transform: rotate(180deg);
}

.accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.accordion-body.open {
  max-height: 2000px;
}

.accordion-content {
  padding: 0 1.25rem 1.25rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.8;
  white-space: pre-wrap;
}

/* ─── Score Bar ──────────────────────────────────────────────────────────────── */
.score-bar-wrap {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

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

.score-label {
  min-width: 80px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.score-track {
  flex: 1;
  height: 6px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 99px;
  overflow: hidden;
}

.score-fill {
  height: 100%;
  border-radius: 99px;
  background: var(--grad-hero);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.8s cubic-bezier(0.4, 0, 0.2, 1) 0.2s;
}

.score-fill.animated {
  transform: scaleX(1);
}

.score-value {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-light);
  min-width: 24px;
}

/* ─── Response Cards ─────────────────────────────────────────────────────────── */
.response-cards {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 0.75rem;
}

.response-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1rem;
}

.response-card__label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.5rem;
}

.response-card--safe .response-card__label {
  color: var(--green);
}

.response-card--firm .response-card__label {
  color: var(--cyan);
}

.response-card--detach .response-card__label {
  color: var(--orange);
}

.response-card__text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.response-card__copy {
  margin-top: 0.5rem;
  padding: 0.3rem 0.75rem;
  font-size: 0.75rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}

.response-card__copy:hover {
  color: var(--text-primary);
  border-color: var(--accent);
}

/* ─── Risk Badge ─────────────────────────────────────────────────────────────── */
.risk-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.8rem;
  border-radius: var(--radius-pill);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.risk-badge--low {
  background: rgba(16, 185, 129, 0.15);
  color: var(--green);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.risk-badge--medium {
  background: rgba(245, 158, 11, 0.15);
  color: var(--orange);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.risk-badge--high {
  background: rgba(239, 68, 68, 0.15);
  color: var(--red);
  border: 1px solid rgba(239, 68, 68, 0.3);
}

/* ─── Alert ──────────────────────────────────────────────────────────────────── */
.alert {
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.alert--error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #fca5a5;
}

.alert--success {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: #6ee7b7;
}

.alert--info {
  background: rgba(139, 92, 246, 0.1);
  border: 1px solid rgba(139, 92, 246, 0.3);
  color: var(--accent-light);
}

/* ─── Hero Section ───────────────────────────────────────────────────────────── */
.hero {
  text-align: center;
  padding: 6rem 1.25rem 4rem;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(139, 92, 246, 0.1);
  border: 1px solid rgba(139, 92, 246, 0.3);
  color: var(--accent-light);
  border-radius: var(--radius-pill);
  padding: 0.3rem 1rem;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.hero__title {
  margin-bottom: 1rem;
}

.hero__subtitle {
  max-width: 560px;
  margin: 0 auto 2.5rem;
  font-size: 1.1rem;
}

.hero__cta {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ─── Features Grid ──────────────────────────────────────────────────────────── */
.features {
  padding: 4rem 0;
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
}

.feature-card {
  padding: 1.5rem;
}

.feature-icon {
  font-size: 2rem;
  margin-bottom: 0.75rem;
}

.feature-card h3 {
  margin-bottom: 0.4rem;
  font-size: 1rem;
}

/* ─── Pricing ────────────────────────────────────────────────────────────────── */
.pricing {
  padding: 4rem 0;
}

.pricing__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
  max-width: 640px;
  margin: 0 auto;
}

.price-card {
  text-align: center;
  padding: 2rem 1.5rem;
}

.price-card--featured {
  border-color: rgba(139, 92, 246, 0.4);
  background: var(--grad-card);
}

.price-badge {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-pill);
  margin-bottom: 0.75rem;
}

.price {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1;
  margin: 0.75rem 0;
}

.price span {
  font-size: 1.2rem;
  font-weight: 400;
  color: var(--text-muted);
}

.price-desc {
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}

/* ─── Footer ─────────────────────────────────────────────────────────────────── */
.footer {
  text-align: center;
  padding: 2.5rem 1.25rem;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* ─── Section Titles ─────────────────────────────────────────────────────────── */
.section-title {
  margin-bottom: 2rem;
  text-align: center;
}

.section-title h2 {
  margin-bottom: 0.5rem;
}

/* ─── Upload Zone ────────────────────────────────────────────────────────────── */
.upload-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius-md);
  padding: 1rem 1.5rem;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  color: var(--text-muted);
  font-size: 0.85rem;
}

.upload-zone:hover {
  border-color: var(--accent);
  color: var(--accent-light);
}

.upload-zone input[type="file"] {
  display: none;
}

/* ─── History List ───────────────────────────────────────────────────────────── */
.history-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.history-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
}

.history-item:hover {
  border-color: rgba(139, 92, 246, 0.3);
}

.history-meta {
  flex: 1;
}

.history-date {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
}

.history-preview {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.history-role {
  background: rgba(139, 92, 246, 0.15);
  color: var(--accent-light);
  border-radius: var(--radius-pill);
  padding: 0.2rem 0.6rem;
  font-size: 0.75rem;
  font-weight: 700;
}

/* ─── Credits Box ────────────────────────────────────────────────────────────── */
.credits-box {
  text-align: center;
  padding: 2rem;
}

.credits-number {
  font-size: 4rem;
  font-weight: 800;
  line-height: 1;
}

.credits-label {
  color: var(--text-secondary);
  margin-top: 0.25rem;
}

/* ─── Empty State ────────────────────────────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-muted);
}

.empty-icon {
  font-size: 3rem;
  margin-bottom: 0.75rem;
}

/* ─── Char Counter ───────────────────────────────────────────────────────────── */
.char-counter {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-align: right;
  margin-top: 0.25rem;
}

.char-counter.warning {
  color: var(--orange);
}

.char-counter.danger {
  color: var(--red);
}

/* ─── Back Button ────────────────────────────────────────────────────────────── */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--text-muted);
  font-size: 0.85rem;
  text-decoration: none;
  transition: var(--transition);
  margin-bottom: 1.5rem;
}

.back-link:hover {
  color: var(--accent-light);
}

/* ─── Divider ────────────────────────────────────────────────────────────────── */
.divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 1.5rem 0;
}

/* ─── Utilities ──────────────────────────────────────────────────────────────── */
.text-center {
  text-align: center;
}

.text-muted {
  color: var(--text-muted);
}

.text-sm {
  font-size: 0.85rem;
}

.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.gap-1 {
  gap: 0.5rem;
}

.gap-2 {
  gap: 1rem;
}

.items-center {
  align-items: center;
}

.justify-between {
  justify-content: space-between;
}

.mt-1 {
  margin-top: 0.5rem;
}

.mt-2 {
  margin-top: 1rem;
}

.mt-3 {
  margin-top: 1.5rem;
}

.mb-1 {
  margin-bottom: 0.5rem;
}

.mb-2 {
  margin-bottom: 1rem;
}

.mb-3 {
  margin-bottom: 1.5rem;
}

.hidden {
  display: none !important;
}

.w-full {
  width: 100%;
}

/* ─── Page wrapper ───────────────────────────────────────────────────────────── */
.page {
  min-height: calc(100vh - 60px);
  padding: 2rem 0 4rem;
}

/* ─── Responsive ─────────────────────────────────────────────────────────────── */
@media (max-width: 640px) {
  .hero {
    padding: 4rem 1.25rem 2.5rem;
  }

  .nav__links .btn--ghost {
    display: none;
  }

  .price {
    font-size: 2.5rem;
  }

  .features__grid,
  .pricing__grid {
    grid-template-columns: 1fr;
  }

  .person-toggle {
    flex-direction: column;
  }
}