/* =========================================================
   ScamShield AI — Design tokens
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@500;700;800&family=Inter:wght@400;500;600&display=swap');

:root {
  /* Base surface */
  --bg-base: #0a0e14;
  --bg-base-2: #0d1420;
  --glow-cyan: #1fb6cf;
  --glow-violet: #6d5ee0;

  /* Glass surfaces */
  --glass-1: rgba(255, 255, 255, 0.045);
  --glass-2: rgba(255, 255, 255, 0.065);
  --glass-border: rgba(255, 255, 255, 0.09);
  --glass-border-strong: rgba(255, 255, 255, 0.14);

  /* Text */
  --text-primary: #eef2f7;
  --text-secondary: #9fadc0;
  --text-tertiary: #6b7688;

  /* Accents */
  --accent-cyan: #4fd1e0;
  --accent-cyan-soft: rgba(79, 209, 224, 0.14);
  --accent-indigo: #8b85f0;

  /* Risk semantics */
  --risk-safe: #34d399;
  --risk-safe-bg: rgba(52, 211, 153, 0.12);
  --risk-suspicious: #f5a524;
  --risk-suspicious-bg: rgba(245, 165, 36, 0.13);
  --risk-high: #fb6f6f;
  --risk-high-bg: rgba(251, 111, 111, 0.14);

  /* Type */
  --font-display: 'Manrope', 'Inter', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;

  /* Layout */
  --shell-width: 720px;
  --shell-width-wide: 1120px;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; }

html {
  color-scheme: dark;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg-base);
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.shell {
  max-width: var(--shell-width);
  margin: 0 auto;
  padding: 0 20px;
}

.shell--wide {
  max-width: var(--shell-width-wide);
}

/* Visually hidden but accessible */
.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* Focus visibility — never removed */
a:focus-visible,
button:focus-visible,
textarea:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--accent-cyan);
  outline-offset: 3px;
  border-radius: 6px;
}

/* =========================================================
   Ambient background
   ========================================================= */

.bg-field {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  background: radial-gradient(ellipse at 50% -10%, var(--bg-base-2) 0%, var(--bg-base) 55%);
}

.bg-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.28;
}

.bg-glow--cyan {
  width: 560px; height: 560px;
  top: -180px; left: 50%;
  transform: translateX(-60%);
  background: var(--glow-cyan);
}

.bg-glow--violet {
  width: 480px; height: 480px;
  top: 260px; right: -160px;
  background: var(--glow-violet);
  opacity: 0.18;
}

/* =========================================================
   Glass panel base
   ========================================================= */

.panel {
  background: linear-gradient(155deg, var(--glass-2), var(--glass-1));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.04) inset,
    0 20px 40px -24px rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  padding: 28px;
}

@media (max-width: 560px) {
  .panel { padding: 20px; border-radius: var(--radius-md); }
}

.panel-heading {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  margin: 0 0 14px;
  color: var(--text-primary);
}

.subheading {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin: 20px 0 10px;
}

/* =========================================================
   Header
   ========================================================= */

.site-header {
  padding: 22px 0;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 9px;
}

.brand__mark {
  display: inline-flex;
  color: var(--accent-cyan);
}

.brand__name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.brand__accent { color: var(--accent-cyan); }

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 0.78rem;
  color: var(--text-secondary);
  padding: 7px 12px;
  border: 1px solid var(--glass-border);
  border-radius: 999px;
  background: var(--glass-1);
  white-space: nowrap;
}

.status-pill__dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--risk-safe);
  box-shadow: 0 0 0 3px rgba(52, 211, 153, 0.18);
}

@media (prefers-reduced-motion: no-preference) {
  .status-pill__dot { animation: pulse-dot 2.4s ease-in-out infinite; }
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.45; }
}

/* =========================================================
   Hero
   ========================================================= */

.hero-section {
  padding: 56px 20px 64px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: 48px;
}

.hero__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.1rem, 4.2vw, 3rem);
  letter-spacing: -0.02em;
  line-height: 1.12;
  margin: 0 0 16px;
  color: var(--text-primary);
}

.hero__subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 46ch;
  margin: 0 0 28px;
}

.hero-ctas {
  display: flex;
  align-items: center;
  gap: 22px;
  flex-wrap: wrap;
}

.btn-primary--hero {
  width: auto;
  margin-top: 0;
  padding: 15px 26px;
}

.hero-link {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-decoration: none;
  border-bottom: 1px solid var(--glass-border-strong);
  padding-bottom: 2px;
  transition: color 0.15s var(--ease), border-color 0.15s var(--ease);
}

.hero-link:hover {
  color: var(--text-primary);
  border-color: var(--accent-cyan);
}

.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-visual svg {
  width: 100%;
  height: auto;
  max-width: 320px;
}

.radar-ring {
  fill: none;
  stroke: rgba(255, 255, 255, 0.09);
  stroke-width: 1;
}

.radar-sweep {
  transform-origin: 160px 160px;
}

@media (prefers-reduced-motion: no-preference) {
  .radar-sweep {
    animation: radar-spin 7s linear infinite;
  }
}

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

@media (max-width: 860px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 32px;
  }
  .hero__subtitle { margin-left: auto; margin-right: auto; }
  .hero-ctas { justify-content: center; }
  .hero-visual { order: -1; }
  .hero-visual svg { max-width: 220px; }
}

/* =========================================================
   How it works
   ========================================================= */

.section-head {
  margin-bottom: 32px;
}

.section-head h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 3vw, 1.9rem);
  letter-spacing: -0.01em;
  margin: 0 0 8px;
  color: var(--text-primary);
}

.section-head p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.98rem;
}

.how-it-works {
  padding: 20px 20px 64px;
}

.steps-row {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  position: relative;
}

.steps-row::before {
  content: '';
  position: absolute;
  top: 19px;
  left: calc(12.5% + 19px);
  right: calc(12.5% + 19px);
  height: 1px;
  background: linear-gradient(90deg, var(--glass-border-strong), var(--glass-border), var(--glass-border-strong));
}

.step {
  position: relative;
}

.step__number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px; height: 38px;
  border-radius: 50%;
  background: var(--bg-base);
  border: 1.5px solid var(--accent-cyan);
  color: var(--accent-cyan);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.92rem;
  margin-bottom: 16px;
  position: relative;
  z-index: 1;
}

.step__title {
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 700;
  margin: 0 0 8px;
  color: var(--text-primary);
}

.step__text {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

@media (max-width: 860px) {
  .steps-row {
    grid-template-columns: 1fr;
    gap: 26px;
  }
  .steps-row::before { display: none; }
}

/* =========================================================
   Benefits ("what you get")
   ========================================================= */

.benefits {
  padding: 20px 20px 72px;
}

.benefits-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
}

.benefit {
  padding: 4px 28px;
  border-left: 1px solid var(--glass-border);
}

.benefit:first-child {
  border-left: none;
  padding-left: 0;
}

.benefit__icon {
  display: inline-flex;
  color: var(--accent-cyan);
  margin-bottom: 14px;
}

.benefit h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  margin: 0 0 8px;
  color: var(--text-primary);
}

.benefit p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

@media (max-width: 860px) {
  .benefits-row {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .benefit {
    border-left: none;
    padding: 20px 0 0;
    border-top: 1px solid var(--glass-border);
  }
  .benefit:first-child {
    border-top: none;
    padding-top: 0;
  }
}

/* =========================================================
   Analyzer
   ========================================================= */

.analyzer { padding-bottom: 8px; }

.field-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

.message-input {
  width: 100%;
  min-height: 140px;
  resize: vertical;
  background: rgba(0, 0, 0, 0.22);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.98rem;
  line-height: 1.6;
  padding: 14px 16px;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.message-input::placeholder { color: var(--text-tertiary); }

.message-input:focus {
  outline: none;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px var(--accent-cyan-soft);
}

.message-input.is-invalid {
  border-color: var(--risk-high);
  box-shadow: 0 0 0 3px var(--risk-high-bg);
}

.analyzer__meta {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-top: 8px;
  min-height: 20px;
}

.char-counter {
  font-size: 0.78rem;
  color: var(--text-tertiary);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

.char-counter.is-near-limit { color: var(--risk-suspicious); }

.validation-message {
  font-size: 0.82rem;
  color: var(--risk-high);
  margin: 0;
}

/* Examples */

.examples {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.examples__label {
  font-size: 0.8rem;
  color: var(--text-tertiary);
}

.examples__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-body);
  font-size: 0.8rem;
  color: var(--text-secondary);
  background: var(--glass-1);
  border: 1px solid var(--glass-border);
  border-radius: 999px;
  padding: 6px 12px;
  cursor: pointer;
  transition: border-color 0.15s var(--ease), background 0.15s var(--ease), transform 0.15s var(--ease);
}

.chip:hover {
  border-color: var(--glass-border-strong);
  background: var(--glass-2);
}

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

.chip__dot {
  width: 7px; height: 7px;
  border-radius: 50%;
}

.chip--safe .chip__dot { background: var(--risk-safe); }
.chip--suspicious .chip__dot { background: var(--risk-suspicious); }
.chip--high-risk .chip__dot { background: var(--risk-high); }

/* Primary button */

.btn-primary {
  position: relative;
  width: 100%;
  margin-top: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.98rem;
  color: #06181d;
  background: linear-gradient(135deg, var(--accent-cyan), #7fdfe8);
  border: none;
  border-radius: var(--radius-md);
  padding: 14px 20px;
  cursor: pointer;
  transition: filter 0.15s var(--ease), transform 0.15s var(--ease), box-shadow 0.2s var(--ease);
  box-shadow: 0 10px 24px -12px rgba(79, 209, 224, 0.45);
}

.btn-primary:hover { filter: brightness(1.06); }
.btn-primary:active { transform: scale(0.99); }

.btn-primary:disabled {
  cursor: not-allowed;
  filter: grayscale(0.25) brightness(0.85);
  box-shadow: none;
}

.btn-primary__spinner {
  display: none;
  width: 16px; height: 16px;
  border: 2px solid rgba(6, 24, 29, 0.35);
  border-top-color: #06181d;
  border-radius: 50%;
}

.btn-primary.is-loading .btn-primary__spinner {
  display: inline-block;
}

@media (prefers-reduced-motion: no-preference) {
  .btn-primary.is-loading .btn-primary__spinner {
    animation: spin 0.7s linear infinite;
  }
}

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

.status-message {
  text-align: center;
  font-size: 0.83rem;
  color: var(--text-tertiary);
  margin: 12px 0 0;
  min-height: 18px;
}

/* Secondary button */

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--text-primary);
  background: var(--glass-1);
  border: 1px solid var(--glass-border-strong);
  border-radius: var(--radius-md);
  padding: 12px 22px;
  cursor: pointer;
  transition: background 0.15s var(--ease), transform 0.15s var(--ease);
}

.btn-secondary:hover { background: var(--glass-2); }
.btn-secondary:active { transform: scale(0.99); }

/* =========================================================
   Error banner
   ========================================================= */

.error-banner { margin-top: 20px; }

.error-banner__panel {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 20px;
  border-color: rgba(251, 111, 111, 0.35);
  color: var(--risk-high);
}

.error-banner__panel p {
  margin: 0;
  color: var(--text-primary);
  font-size: 0.92rem;
}

.error-banner__panel svg { flex-shrink: 0; margin-top: 2px; }

/* =========================================================
   Results
   ========================================================= */

.results {
  margin-top: 26px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding-bottom: 60px;
}

@media (prefers-reduced-motion: no-preference) {
  .results:not([hidden]) {
    animation: reveal 0.5s var(--ease);
  }
}

@keyframes reveal {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Risk verdict panel */

.risk-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  border-width: 1.5px;
}

.risk-panel[data-risk="safe"] {
  border-color: rgba(52, 211, 153, 0.4);
  background: linear-gradient(155deg, var(--risk-safe-bg), var(--glass-1));
}
.risk-panel[data-risk="suspicious"] {
  border-color: rgba(245, 165, 36, 0.4);
  background: linear-gradient(155deg, var(--risk-suspicious-bg), var(--glass-1));
}
.risk-panel[data-risk="high-risk"] {
  border-color: rgba(251, 111, 111, 0.45);
  background: linear-gradient(155deg, var(--risk-high-bg), var(--glass-1));
}

.risk-panel__top {
  display: flex;
  align-items: center;
  gap: 14px;
}

.risk-icon {
  display: inline-flex;
  flex-shrink: 0;
  width: 42px; height: 42px;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
}

.risk-panel[data-risk="safe"] .risk-icon { background: var(--risk-safe-bg); color: var(--risk-safe); }
.risk-panel[data-risk="suspicious"] .risk-icon { background: var(--risk-suspicious-bg); color: var(--risk-suspicious); }
.risk-panel[data-risk="high-risk"] .risk-icon { background: var(--risk-high-bg); color: var(--risk-high); }

.risk-panel__label {
  margin: 0 0 3px;
  font-size: 0.76rem;
  color: var(--text-secondary);
  font-weight: 600;
}

.risk-panel__level {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: -0.01em;
}

.risk-panel[data-risk="safe"] .risk-panel__level { color: var(--risk-safe); }
.risk-panel[data-risk="suspicious"] .risk-panel__level { color: var(--risk-suspicious); }
.risk-panel[data-risk="high-risk"] .risk-panel__level { color: var(--risk-high); }

.risk-panel__confidence {
  text-align: right;
}

.confidence-value {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--text-primary);
}

.confidence-label {
  font-size: 0.75rem;
  color: var(--text-tertiary);
}

/* Probability breakdown */

.probability-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.probability-row__top {
  display: flex;
  justify-content: space-between;
  font-size: 0.86rem;
  margin-bottom: 6px;
}

.probability-row__name {
  color: var(--text-secondary);
  text-transform: capitalize;
}

.probability-row__value {
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}

.probability-row.is-top .probability-row__name,
.probability-row.is-top .probability-row__value {
  color: var(--text-primary);
}

.probability-track {
  height: 8px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  overflow: hidden;
}

.probability-fill {
  height: 100%;
  border-radius: 999px;
  width: 0%;
  transition: width 0.7s var(--ease);
}

.probability-row[data-key="safe"] .probability-fill { background: var(--risk-safe); }
.probability-row[data-key="suspicious"] .probability-fill { background: var(--risk-suspicious); }
.probability-row[data-key="high-risk"] .probability-fill { background: var(--risk-high); }

.probability-row:not(.is-top) .probability-fill { opacity: 0.55; }

@media (prefers-reduced-motion: reduce) {
  .probability-fill { transition: none; }
}

/* Explanation */

.explanation-summary {
  color: var(--text-primary);
  font-size: 0.96rem;
  margin: 0 0 4px;
}

.signals-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.signals-list li {
  display: flex;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  align-items: flex-start;
}

.signals-list li::before {
  content: '';
  flex-shrink: 0;
  width: 6px; height: 6px;
  margin-top: 7px;
  border-radius: 50%;
  background: var(--accent-cyan);
}

.scam-type {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.scam-type__label {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.scam-type__badge {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--accent-cyan);
  background: var(--accent-cyan-soft);
  border: 1px solid rgba(79, 209, 224, 0.3);
  border-radius: 999px;
  padding: 5px 13px;
  text-transform: capitalize;
}

/* Recommended actions */

.actions-panel {
  border-color: var(--glass-border-strong);
}

.actions-panel[data-emphasized="true"] {
  border-color: rgba(251, 111, 111, 0.4);
  background: linear-gradient(155deg, rgba(251, 111, 111, 0.08), var(--glass-1));
}

.actions-list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: action;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.actions-list li {
  counter-increment: action;
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 0.92rem;
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
}

.actions-list li::before {
  content: counter(action);
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--accent-cyan-soft);
  color: var(--accent-cyan);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.78rem;
}

/* Original message */

.message-details summary {
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.message-details summary::-webkit-details-marker { display: none; }

.message-details summary::after {
  content: '+';
  font-size: 1.1rem;
  color: var(--text-tertiary);
  transition: transform 0.2s var(--ease);
}

.message-details[open] summary::after { transform: rotate(45deg); }

.original-message {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--glass-border);
  color: var(--text-secondary);
  font-size: 0.88rem;
  white-space: pre-wrap;
  word-break: break-word;
}

.results__footer {
  display: flex;
  justify-content: center;
  padding-top: 6px;
}

/* =========================================================
   Footer
   ========================================================= */

.site-footer {
  padding: 20px 20px 40px;
  text-align: center;
}

.site-footer p {
  margin: 0;
  font-size: 0.78rem;
  color: var(--text-tertiary);
}

/* =========================================================
   Responsive
   ========================================================= */

@media (max-width: 560px) {
  .risk-panel {
    flex-direction: column;
    align-items: flex-start;
  }
  .risk-panel__confidence { text-align: left; }
  .site-header__inner { flex-wrap: wrap; gap: 10px; }
}