/* ============================================================
   ALVITSENNA — Dark Hologram UI Design System
   Clinical futurism · Surgical dark · Sci-fi medical hologram
   ============================================================ */

/* ── 1. TOKENS ────────────────────────────────────────────── */
:root {
  --bg-deep:        #050A18;
  --bg-card:        rgba(255, 255, 255, 0.04);
  --border-subtle:  rgba(255, 255, 255, 0.08);

  --cyan:           #00D4FF;
  --cyan-glow:      rgba(0, 212, 255, 0.35);

  --danger:         #FF3B5C;
  --danger-glow:    rgba(255, 59, 92, 0.3);

  --safe:           #00FF88;
  --warning:        #FFB23B;

  --text-primary:   #FFFFFF;
  --text-secondary: rgba(255, 255, 255, 0.65);
  --text-dim:       rgba(255, 255, 255, 0.4);

  --radius:         12px;
  --radius-lg:      16px;
  --radius-pill:    999px;
}

/* ── 2. RESET & BASE ──────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--bg-deep);
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  color: var(--text-primary);
  min-height: 100dvh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* ── 3. LAYOUT ────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: 480px;
  margin-inline: auto;
  padding: 1.25rem 1rem;
}

/* full-width container variant (dashboard charts etc.) */
.container--wide {
  max-width: 720px;
  margin-inline: auto;
  padding: 1.25rem 1rem;
}

/* ── 4. GLASS CARD ────────────────────────────────────────── */
.glass-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(12px) saturate(1.4);
  -webkit-backdrop-filter: blur(12px) saturate(1.4);
  padding: 1.25rem;
}

.glass-card + .glass-card {
  margin-top: 1rem;
}

/* ── 5. BUTTONS ───────────────────────────────────────────── */
.btn-primary,
.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
  padding: 0.875rem 1.5rem;
  border-radius: var(--radius-pill);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease, opacity 0.15s ease;
  -webkit-tap-highlight-color: transparent;
}

.btn-primary {
  background: linear-gradient(135deg, var(--cyan) 0%, #7B2FFF 100%);
  color: #050A18;
  box-shadow: 0 0 18px var(--cyan-glow);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 0 28px var(--cyan-glow), 0 4px 16px rgba(0, 0, 0, 0.4);
  opacity: 0.92;
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 0 10px var(--cyan-glow);
}

.btn-outline {
  background: transparent;
  color: var(--cyan);
  border: 1px solid var(--cyan);
}

.btn-outline:hover,
.btn-outline:focus-visible {
  background: rgba(0, 212, 255, 0.08);
  box-shadow: 0 0 14px var(--cyan-glow);
  transform: translateY(-1px);
}

.btn-outline:active {
  transform: translateY(0);
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.8125rem;
  width: auto;
}

/* ── 6. FORM CONTROLS ─────────────────────────────────────── */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.form-label {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
select,
textarea {
  width: 100%;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
  color: var(--text-primary);
  font-size: 0.9375rem;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  -webkit-appearance: none;
  appearance: none;
}

input[type="text"]::placeholder,
input[type="email"]::placeholder,
input[type="password"]::placeholder,
input[type="number"]::placeholder,
textarea::placeholder {
  color: var(--text-dim);
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
input[type="number"]:focus,
select:focus,
textarea:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px var(--cyan-glow), 0 0 12px rgba(0, 212, 255, 0.15);
}

select option {
  background: #0D1426;
  color: var(--text-primary);
}

/* Checkbox */
.checkbox-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
}

.checkbox-row input[type="checkbox"] {
  width: 20px;
  height: 20px;
  accent-color: var(--cyan);
  cursor: pointer;
  flex-shrink: 0;
}

.form-error {
  font-size: 0.8rem;
  color: var(--danger);
  margin-top: 0.25rem;
}

.form-hint {
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* ── 7. BOTTOM NAV ────────────────────────────────────────── */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 64px;
  background: rgba(5, 10, 24, 0.85);
  backdrop-filter: blur(20px) saturate(1.5);
  -webkit-backdrop-filter: blur(20px) saturate(1.5);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: stretch;
  z-index: 100;
}

.bottom-nav__item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  text-decoration: none;
  color: var(--text-dim);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  transition: color 0.2s ease;
  -webkit-tap-highlight-color: transparent;
}

.bottom-nav__item svg,
.bottom-nav__item .nav-icon {
  width: 22px;
  height: 22px;
  transition: filter 0.2s ease;
}

.bottom-nav__item.active,
.bottom-nav__item:hover {
  color: var(--cyan);
}

.bottom-nav__item.active .nav-icon,
.bottom-nav__item.active svg {
  filter: drop-shadow(0 0 6px var(--cyan-glow));
}

/* page content clearance above fixed nav */
.page-body {
  padding-bottom: 80px;
}

/* ── 8. RISK SCORE ────────────────────────────────────────── */
.risk-score {
  font-size: 4.5rem;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--cyan);
  text-shadow: 0 0 24px var(--cyan-glow);
  font-variant-numeric: tabular-nums;
}

.risk-score.high {
  color: var(--danger);
  text-shadow: 0 0 24px var(--danger-glow);
}

.risk-score.medium {
  color: var(--warning);
  text-shadow: 0 0 20px rgba(255, 178, 59, 0.4);
}

.risk-score__label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-top: 0.25rem;
}

/* ── 9. STAT GRID ─────────────────────────────────────────── */
.stat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.625rem;
}

.stat-cell {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 0.875rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.stat-cell__value {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
}

.stat-cell__label {
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* ── 10. RISK FACTOR CARDS ────────────────────────────────── */
.risk-factor-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  border-left: 3px solid var(--danger);
  padding: 0.875rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.625rem;
}

.risk-factor-card.level-high {
  border-left-color: var(--danger);
}

.risk-factor-card.level-medium {
  border-left-color: var(--warning);
}

.risk-factor-card.level-low {
  border-left-color: var(--safe);
}

.risk-factor-card.level-note {
  border-left-color: var(--cyan);
}

.risk-factor__name {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-primary);
}

.risk-badge {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-pill);
}

.risk-badge.level-high   { background: var(--danger-glow);            color: var(--danger); }
.risk-badge.level-medium { background: rgba(255, 178, 59, 0.2);        color: var(--warning); }
.risk-badge.level-low    { background: rgba(0, 255, 136, 0.15);        color: var(--safe); }
.risk-badge.level-note   { background: var(--cyan-glow);               color: var(--cyan); }

/* ── 11. PULSE DOT ────────────────────────────────────────── */
@keyframes pulse {
  0%, 100% { transform: scale(1);   opacity: 0.9; }
  50%       { transform: scale(1.4); opacity: 0.5; }
}

.pulse-dot {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--danger);
  box-shadow: 0 0 10px var(--danger-glow);
  animation: pulse 1.6s ease-in-out infinite;
  flex-shrink: 0;
}

.pulse-dot--cyan {
  background: var(--cyan);
  box-shadow: 0 0 10px var(--cyan-glow);
}

/* ── 12. SCAN LINE ────────────────────────────────────────── */
@keyframes scan {
  0%   { top: 0%; }
  100% { top: 100%; }
}

.scan-wrapper {
  position: relative;
  overflow: hidden;
}

.scan-line {
  position: absolute;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg,
    transparent 0%,
    var(--cyan) 30%,
    rgba(0, 212, 255, 0.8) 50%,
    var(--cyan) 70%,
    transparent 100%
  );
  box-shadow: 0 0 8px var(--cyan-glow), 0 0 20px rgba(0, 212, 255, 0.2);
  animation: scan 4s linear infinite;
  pointer-events: none;
}

/* ── 13. DISCLAIMER ───────────────────────────────────────── */
.disclaimer {
  font-size: 0.75rem;
  color: var(--text-dim);
  text-align: center;
  padding: 1rem 1.25rem;
  line-height: 1.6;
}

.disclaimer strong {
  color: var(--text-secondary);
}

/* ── 14. PROGRESS SEGMENTS (onboarding) ───────────────────── */
.progress-segments {
  display: flex;
  gap: 6px;
  margin-bottom: 1.5rem;
}

.progress-segment {
  flex: 1;
  height: 3px;
  border-radius: var(--radius-pill);
  background: var(--border-subtle);
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.progress-segment.active {
  background: var(--cyan);
  box-shadow: 0 0 8px var(--cyan-glow);
}

/* ── 15. PAGE HEADER ──────────────────────────────────────── */
.page-header {
  padding: 1.5rem 0 1rem;
}

.page-header__eyebrow {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 0.25rem;
}

.page-header__title {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.page-header__sub {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
}

/* ── 16. TYPOGRAPHY UTILITIES ─────────────────────────────── */
.text-cyan    { color: var(--cyan); }
.text-danger  { color: var(--danger); }
.text-safe    { color: var(--safe); }
.text-warning { color: var(--warning); }
.text-dim     { color: var(--text-dim); }
.text-secondary { color: var(--text-secondary); }

.text-sm   { font-size: 0.8125rem; }
.text-xs   { font-size: 0.75rem; }
.font-bold { font-weight: 700; }
.font-mono { font-family: 'SF Mono', 'Fira Code', monospace; }

/* ── 17. SPACING & DISPLAY UTILITIES ─────────────────────── */
.mt-1  { margin-top: 0.25rem; }
.mt-2  { margin-top: 0.5rem; }
.mt-3  { margin-top: 0.75rem; }
.mt-4  { margin-top: 1rem; }
.mt-6  { margin-top: 1.5rem; }
.mt-8  { margin-top: 2rem; }
.mb-4  { margin-bottom: 1rem; }
.mb-6  { margin-bottom: 1.5rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }

.flex         { display: flex; }
.flex-col     { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.w-full       { width: 100%; }
.text-center  { text-align: center; }

/* ── 18. DIVIDER ──────────────────────────────────────────── */
.divider {
  height: 1px;
  background: var(--border-subtle);
  margin: 1.25rem 0;
}

/* ── 19. MESSAGES / ALERTS ────────────────────────────────── */
.alert {
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  font-size: 0.875rem;
  margin-bottom: 1rem;
  border-left: 3px solid;
}

.alert-error {
  background: rgba(255, 59, 92, 0.1);
  border-color: var(--danger);
  color: #FF7A93;
}

.alert-success {
  background: rgba(0, 255, 136, 0.08);
  border-color: var(--safe);
  color: #00FF88;
}

.alert-info {
  background: rgba(0, 212, 255, 0.08);
  border-color: var(--cyan);
  color: var(--cyan);
}