/* ====================================================
   CATHHUB — styles.css
   Premium Catheter Compatibility Tool for INR
   ==================================================== */

/* ─── ROOT VARIABLES ─────────────────────────────────────────────────────────── */
:root {
  /* Backgrounds */
  --bg:        #090d14;
  --surface:   #111827;
  --surface2:  #1a2236;
  --surface3:  #1f2d42;

  /* Borders */
  --border:    #1e3a5f;
  --border2:   #2d4a6e;

  /* Primary accent — sky blue */
  --accent:       #0ea5e9;
  --accent-glow:  rgba(14, 165, 233, 0.15);
  --accent-dim:   rgba(14, 165, 233, 0.08);

  /* Secondary accent — medical teal */
  --teal:      #14b8a6;
  --teal-glow: rgba(20, 184, 166, 0.12);

  /* Status colors */
  --green:        #10b981;
  --green-bg:     rgba(16, 185, 129, 0.10);
  --green-border: rgba(16, 185, 129, 0.25);

  --amber:        #f59e0b;
  --amber-bg:     rgba(245, 158, 11, 0.10);
  --amber-border: rgba(245, 158, 11, 0.25);

  --red:          #ef4444;
  --red-bg:       rgba(239, 68, 68, 0.10);
  --red-border:   rgba(239, 68, 68, 0.25);

  /* Text */
  --text:   #e2e8f0;
  --text2:  #94a3b8;
  --muted:  #64748b;

  /* Shape */
  --radius:    10px;
  --radius-lg: 14px;
  --radius-sm: 6px;
}

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

/* ─── BODY ───────────────────────────────────────────────────────────────────── */
body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 14px;
  line-height: 1.5;
  font-feature-settings: 'cv05' 1, 'ss01' 1;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

/* ─── HEADER ─────────────────────────────────────────────────────────────────── */
header {
  background: linear-gradient(135deg, var(--surface) 0%, var(--surface2) 100%);
  border-bottom: 1px solid var(--border);
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
  min-width: 0;
}
.logo-icon { flex-shrink: 0; }
.logo {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.5px;
  line-height: 1.1;
  white-space: nowrap;
}
.logo span { color: var(--accent); }
.logo-sub {
  font-size: 10px;
  font-weight: 500;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 1.2px;
  margin-top: 2px;
  white-space: nowrap;
}
.connectrx-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  color: var(--teal);
  border: 1px solid rgba(20, 184, 166, 0.3);
  background: var(--teal-glow);
  padding: 5px 12px;
  border-radius: 20px;
  flex-shrink: 0;
  white-space: nowrap;
}
.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 6px var(--teal);
  animation: blink 2.5s ease-in-out infinite;
  flex-shrink: 0;
}
@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.25; }
}

/* ─── TABS ───────────────────────────────────────────────────────────────────── */
.tabs {
  display: flex;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 65px;
  z-index: 99;
}
.tab {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 10px 8px 9px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--muted);
  border: none;
  background: none;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  min-height: 58px;
  transition: color 0.18s, border-color 0.18s, background 0.18s;
  touch-action: manipulation;
  font-family: inherit;
}
.tab svg { transition: transform 0.18s; }
.tab:hover { color: var(--text2); }
.tab:hover svg { transform: translateY(-1px); }
.tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
  background: linear-gradient(to bottom, transparent, var(--accent-dim));
}

/* ─── MAIN LAYOUT ────────────────────────────────────────────────────────────── */
main {
  padding: 20px;
  max-width: 640px;
  margin: 0 auto;
}

/* ─── SECTION ────────────────────────────────────────────────────────────────── */
.section { margin-bottom: 20px; }
.section-label {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--muted);
  margin-bottom: 8px;
}

/* ─── SELECT ─────────────────────────────────────────────────────────────────── */
select {
  width: 100%;
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 13px 44px 13px 16px;
  font-size: 14px;
  font-family: inherit;
  font-feature-settings: 'cv05' 1;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2' stroke-linecap='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  cursor: pointer;
  transition: border-color 0.15s, box-shadow 0.15s;
  touch-action: manipulation;
  min-height: 50px;
}
select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}

/* ─── MICRO SLOTS ────────────────────────────────────────────────────────────── */
.micro-slots { display: flex; flex-direction: column; gap: 10px; }

.micro-slot {
  position: relative;
  display: flex;
  align-items: center;
}
.slot-badge {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 10px;
  font-weight: 800;
  color: var(--accent);
  background: var(--surface2);
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  z-index: 2;
  border: 1px solid var(--border);
}
.micro-slot select {
  padding: 13px 96px 13px 46px;
}
.micro-slot.has-value select {
  border-color: var(--accent);
  background-color: var(--surface);
  background-image: none;
}
.slot-od {
  position: absolute;
  right: 46px;
  font-size: 11px;
  font-weight: 700;
  color: var(--teal);
  background: var(--teal-glow);
  border: 1px solid rgba(20, 184, 166, 0.25);
  padding: 3px 8px;
  border-radius: 4px;
  pointer-events: none;
  white-space: nowrap;
  z-index: 2;
}
.slot-clear {
  position: absolute;
  right: 8px;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  border: none;
  background: var(--surface2);
  color: var(--muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s, color 0.15s;
  z-index: 2;
  touch-action: manipulation;
  flex-shrink: 0;
}
.slot-clear:hover {
  background: var(--red-bg);
  color: var(--red);
}

/* ─── RESULT CARD ────────────────────────────────────────────────────────────── */
.result-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-top: 8px;
}
.result-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 7px 0;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}
.result-row:last-child { border-bottom: none; }
.result-label { color: var(--muted); font-size: 13px; }
.result-value {
  font-weight: 700;
  font-size: 15px;
  font-feature-settings: 'tnum' 1;
}

/* ─── SUMMARY STRIP ──────────────────────────────────────────────────────────── */
.summary-strip {
  display: flex;
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  margin: 14px 0;
  animation: cardEnter 0.2s ease-out;
}
.summary-metric {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex: 1;
  gap: 3px;
}
.summary-num {
  font-size: 30px;
  font-weight: 800;
  line-height: 1;
  font-feature-settings: 'tnum' 1;
}
.summary-num.green { color: var(--green); }
.summary-num.amber { color: var(--amber); }
.summary-num.red   { color: var(--red); }
.summary-label {
  font-size: 9px;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.6px;
}
.summary-divider {
  width: 1px;
  height: 38px;
  background: var(--border);
  margin: 0 4px;
  flex-shrink: 0;
}
.summary-od {
  border-left: 1px solid var(--border);
  padding-left: 14px;
  font-size: 10px;
  color: var(--muted);
  text-align: right;
  white-space: nowrap;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.summary-od strong {
  display: block;
  font-size: 16px;
  font-weight: 800;
  color: var(--text);
  font-feature-settings: 'tnum' 1;
  margin-top: 3px;
  letter-spacing: 0;
}

/* ─── FR GROUPS ──────────────────────────────────────────────────────────────── */
.fr-group {
  margin-bottom: 16px;
  animation: cardEnter 0.22s ease-out both;
}
.fr-group-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 4px 2px;
  margin-bottom: 8px;
}
.fr-badge {
  font-size: 10px;
  font-weight: 800;
  background: var(--surface2);
  border: 1px solid var(--border2);
  color: var(--accent);
  padding: 3px 10px;
  border-radius: 20px;
  letter-spacing: 0.5px;
}
.fr-group-name {
  font-size: 12px;
  font-weight: 600;
  color: var(--text2);
}
.fr-group-count {
  margin-left: auto;
  font-size: 11px;
  color: var(--muted);
}

/* ─── COMPATIBILITY BANNER ───────────────────────────────────────────────────── */
.compat-banner {
  border-radius: var(--radius);
  padding: 14px 18px;
  margin-top: 14px;
  display: flex;
  align-items: center;
  gap: 14px;
  animation: cardEnter 0.2s ease-out;
}
.compat-icon {
  flex-shrink: 0;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.compat-title {
  font-size: 14px;
  font-weight: 700;
  font-feature-settings: 'tnum' 1;
}
.compat-sub {
  font-size: 12px;
  font-weight: 400;
  opacity: 0.75;
  margin-top: 2px;
}
.compat-banner.green {
  background: var(--green-bg);
  border: 1px solid var(--green-border);
  color: var(--green);
}
.compat-banner.green .compat-icon { background: rgba(16, 185, 129, 0.15); }
.compat-banner.amber {
  background: var(--amber-bg);
  border: 1px solid var(--amber-border);
  color: var(--amber);
}
.compat-banner.amber .compat-icon { background: rgba(245, 158, 11, 0.15); }
.compat-banner.red {
  background: var(--red-bg);
  border: 1px solid var(--red-border);
  color: var(--red);
}
.compat-banner.red .compat-icon { background: rgba(239, 68, 68, 0.15); }
.compat-banner.none {
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--muted);
}
.compat-banner.none .compat-icon { background: var(--surface3); }

/* ─── SPEC GRID ──────────────────────────────────────────────────────────────── */
.spec-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 12px;
}
.spec-cell {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  transition: border-color 0.15s;
}
.spec-cell.primary {
  border-color: var(--accent);
  background: linear-gradient(135deg, var(--surface2) 0%, var(--accent-dim) 100%);
}
.spec-label {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--muted);
  margin-bottom: 6px;
}
.spec-val {
  font-size: 26px;
  font-weight: 800;
  line-height: 1;
  color: var(--text);
  font-feature-settings: 'tnum' 1;
}
.spec-cell.primary .spec-val { color: var(--accent); }
.spec-unit {
  font-size: 11px;
  font-weight: 500;
  color: var(--muted);
  margin-left: 2px;
}

/* ─── LUMEN VISUALIZATION ────────────────────────────────────────────────────── */
.lumen-viz-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px 16px 18px;
  margin: 16px 0 8px;
  animation: cardEnter 0.25s ease-out;
}
.lumen-viz-label {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--muted);
  margin-bottom: 16px;
}
.lumen-viz {
  width: 180px;
  height: 180px;
  display: block;
  filter: drop-shadow(0 0 16px rgba(14, 165, 233, 0.06));
}
.lumen-viz-dims {
  display: flex;
  width: 100%;
  max-width: 300px;
  margin-top: 18px;
  border-top: 1px solid var(--border);
  padding-top: 14px;
}
.dim-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 0 8px;
  border-right: 1px solid var(--border);
}
.dim-item:last-child { border-right: none; }
.dim-swatch {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  display: block;
  flex-shrink: 0;
}
.dim-key {
  font-size: 9px;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  text-align: center;
}
.dim-val {
  font-size: 15px;
  font-weight: 800;
  color: var(--text);
  font-feature-settings: 'tnum' 1;
  line-height: 1;
}
.dim-unit {
  font-size: 9px;
  color: var(--muted);
}

/* ─── ACCESS TABLE ───────────────────────────────────────────────────────────── */
.access-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.access-table th {
  text-align: left;
  padding: 9px 12px;
  background: var(--surface2);
  color: var(--muted);
  font-weight: 700;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.6px;
}
.access-table td {
  padding: 11px 12px;
  border-bottom: 1px solid var(--border);
}
.access-table tr:last-child td { border-bottom: none; }
.access-table tbody tr { transition: background 0.12s; }
.access-table tbody tr:hover td { background: var(--surface3); }

/* ─── PILLS ──────────────────────────────────────────────────────────────────── */
.pill {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 700;
  font-feature-settings: 'tnum' 1;
}
.pill.green { background: var(--green-bg); border: 1px solid var(--green-border); color: var(--green); }
.pill.amber { background: var(--amber-bg); border: 1px solid var(--amber-border); color: var(--amber); }
.pill.red   { background: var(--red-bg);   border: 1px solid var(--red-border);   color: var(--red); }

/* ─── FILTER BAR ─────────────────────────────────────────────────────────────── */
.filter-bar {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.filter-pill {
  padding: 6px 16px;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: var(--surface2);
  color: var(--muted);
  font-family: inherit;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.15s;
  min-height: 34px;
  min-width: 44px;
  letter-spacing: 0.3px;
  touch-action: manipulation;
}
.filter-pill:hover {
  border-color: var(--border2);
  color: var(--text2);
}
.filter-pill.active {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent);
}

/* ─── EMPTY STATE ────────────────────────────────────────────────────────────── */
.empty {
  text-align: center;
  color: var(--muted);
  padding: 36px 20px;
  font-size: 13px;
}
.empty .icon {
  display: block;
  margin-bottom: 10px;
  opacity: 0.4;
}

/* ─── FOOTER ─────────────────────────────────────────────────────────────────── */
footer {
  text-align: center;
  font-size: 11px;
  color: var(--muted);
  padding: 24px 20px 32px;
  border-top: 1px solid var(--border);
  margin-top: 48px;
  line-height: 1.8;
}
footer a { color: var(--accent); text-decoration: none; }
footer a:hover { text-decoration: underline; }

/* ─── SPLASH SCREEN ──────────────────────────────────────────────────────────── */
#splash {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.5s ease;
}
.splash-content {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.splash-ring {
  width: 80px;
  height: 80px;
  margin-bottom: 28px;
}
.splash-ring-inner {
  stroke-dasharray: 139;
  stroke-dashoffset: 139;
  animation: drawRing 0.9s 0.3s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}
.splash-ring-core {
  opacity: 0;
  animation: splashFade 0.4s 1.0s ease forwards;
}
.splash-logo {
  font-size: 44px;
  font-weight: 800;
  letter-spacing: -1.5px;
  color: var(--text);
  line-height: 1;
  opacity: 0;
  animation: splashFade 0.5s 0.5s ease forwards;
}
.splash-logo span { color: var(--accent); }
.splash-sub {
  font-size: 11px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 10px;
  margin-bottom: 36px;
  opacity: 0;
  animation: splashFade 0.5s 0.65s ease forwards;
}
.splash-brand {
  font-size: 12px;
  color: var(--muted);
  opacity: 0;
  animation: splashFade 0.5s 0.8s ease forwards;
}
.splash-brand a { color: var(--teal); text-decoration: none; }

/* ─── ANIMATIONS ─────────────────────────────────────────────────────────────── */
@keyframes drawRing {
  to { stroke-dashoffset: 0; }
}
@keyframes splashFade {
  to { opacity: 1; }
}
@keyframes cardEnter {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes panelEnter {
  from { opacity: 0; transform: translateY(5px); }
  to   { opacity: 1; transform: translateY(0); }
}
.panel-entering {
  animation: panelEnter 0.22s ease-out;
}

/* ─── UTILITIES ──────────────────────────────────────────────────────────────── */
.hidden { display: none !important; }
button { touch-action: manipulation; }