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

:root {
  --bg0: #0b1210;
  --bg1: #121a17;
  --surface: rgba(255, 255, 255, 0.045);
  --surface-strong: rgba(255, 255, 255, 0.075);
  --ink: #eef3ef;
  --muted: #9aada3;
  --line: rgba(238, 243, 239, 0.12);
  --line-strong: rgba(238, 243, 239, 0.22);
  --accent: #2dd4bf;
  --accent-2: #f0b429;
  --accent-dim: rgba(45, 212, 191, 0.14);
  --danger: #fb7185;
  --radius: 22px;
  --radius-sm: 14px;
  --shadow: 0 30px 80px rgba(0, 0, 0, 0.45);
  --font-display: "Syne", "Avenir Next", sans-serif;
  --font-body: "Manrope", system-ui, sans-serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--bg0);
  line-height: 1.6;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(900px 520px at 12% -8%, rgba(45, 212, 191, 0.22), transparent 58%),
    radial-gradient(720px 480px at 92% 8%, rgba(240, 180, 41, 0.14), transparent 55%),
    radial-gradient(600px 420px at 70% 100%, rgba(45, 212, 191, 0.08), transparent 60%),
    linear-gradient(180deg, var(--bg1), var(--bg0) 45%, #070b0a);
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.28;
  background-image:
    linear-gradient(rgba(238, 243, 239, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(238, 243, 239, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at center, black 20%, transparent 75%);
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color 0.2s var(--ease);
}
a:hover { color: #fff; }

.wrap {
  position: relative;
  z-index: 1;
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
}

/* Header */
.site-header {
  padding: 1.4rem 0 0.4rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  animation: rise 0.7s var(--ease) both;
}
.brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.4rem;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.04em;
  display: inline-flex;
  align-items: baseline;
  gap: 0.35rem;
}
.brand span {
  background: linear-gradient(120deg, var(--accent), #7ee8d4 40%, var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.nav {
  display: flex;
  gap: 0.35rem;
  padding: 0.3rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(12px);
}
.nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 600;
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
}
.nav a:hover {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.06);
}

/* Hub hero */
.hero {
  padding: clamp(3rem, 8vw, 5.5rem) 0 2.2rem;
  display: grid;
  gap: 1.1rem;
  max-width: 40rem;
  animation: rise 0.85s var(--ease) 0.08s both;
}
.hero .eyebrow {
  margin: 0;
  width: fit-content;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  border: 1px solid rgba(45, 212, 191, 0.35);
  background: var(--accent-dim);
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.7rem, 7vw, 4.4rem);
  line-height: 0.98;
  letter-spacing: -0.05em;
}
.hero p {
  margin: 0;
  color: var(--muted);
  font-size: 1.08rem;
  max-width: 34rem;
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
  padding: 0.5rem 0 3.5rem;
  animation: rise 0.9s var(--ease) 0.16s both;
}
.tool-card {
  position: relative;
  display: block;
  padding: 1.55rem 1.5rem 1.4rem;
  background: linear-gradient(160deg, rgba(255,255,255,0.08), rgba(255,255,255,0.03));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  text-decoration: none;
  color: inherit;
  overflow: hidden;
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease), background 0.35s var(--ease);
}
.tool-card::before {
  content: "";
  position: absolute;
  inset: auto -20% -40% auto;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(45, 212, 191, 0.28), transparent 68%);
  transition: transform 0.45s var(--ease);
}
.tool-card:hover {
  transform: translateY(-4px);
  border-color: rgba(45, 212, 191, 0.4);
  color: inherit;
}
.tool-card:hover::before { transform: scale(1.25); }
.tool-card h2 {
  position: relative;
  margin: 0 0 0.45rem;
  font-family: var(--font-display);
  font-size: 1.55rem;
  letter-spacing: -0.03em;
}
.tool-card p {
  position: relative;
  margin: 0;
  color: var(--muted);
  font-size: 0.96rem;
}
.tool-card .meta {
  position: relative;
  margin-top: 1.15rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}
.tool-card .meta::after {
  content: "→";
  transition: transform 0.25s var(--ease);
}
.tool-card:hover .meta::after { transform: translateX(4px); }

/* Tool page head */
.page-head {
  padding: 2.2rem 0 1.4rem;
  animation: rise 0.7s var(--ease) both;
}
.page-head .crumb {
  margin: 0 0 0.85rem;
  font-size: 0.86rem;
  color: var(--muted);
}
.page-head .crumb a { color: var(--muted); text-decoration: none; }
.page-head .crumb a:hover { color: var(--accent); }
.page-head h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 5vw, 3.1rem);
  letter-spacing: -0.045em;
  line-height: 1.05;
}
.page-head .lead {
  margin: 0.75rem 0 0;
  color: var(--muted);
  max-width: 42rem;
  font-size: 1.02rem;
}

.panel {
  background: linear-gradient(165deg, rgba(255,255,255,0.08), rgba(255,255,255,0.03));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.35rem 1.4rem;
  margin-bottom: 1.25rem;
  backdrop-filter: blur(18px);
}

.btn {
  appearance: none;
  border: 0;
  border-radius: 999px;
  background: linear-gradient(135deg, #2dd4bf, #14b8a6);
  color: #06201c;
  font: inherit;
  font-weight: 700;
  padding: 0.72rem 1.25rem;
  cursor: pointer;
  transition: transform 0.2s var(--ease), filter 0.2s var(--ease), box-shadow 0.2s var(--ease);
  box-shadow: 0 10px 28px rgba(45, 212, 191, 0.28);
}
.btn:hover {
  filter: brightness(1.06);
  transform: translateY(-1px);
}
.btn:active { transform: translateY(0); }
.btn.secondary {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line-strong);
  box-shadow: none;
}
.btn.secondary:hover { background: rgba(255, 255, 255, 0.05); }
.btn.tiny {
  padding: 0.38rem 0.85rem;
  font-size: 0.82rem;
  box-shadow: none;
}

.output-text {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2.6vw, 1.7rem);
  line-height: 1.35;
  letter-spacing: -0.02em;
  word-break: break-word;
}
.error {
  margin: 0.55rem 0 0;
  color: var(--danger);
  font-size: 0.92rem;
}

.prose {
  padding: 0.8rem 0 3.4rem;
  max-width: 46rem;
  animation: rise 0.8s var(--ease) 0.12s both;
}
.prose h2 {
  margin: 2rem 0 0.65rem;
  font-family: var(--font-display);
  font-size: 1.45rem;
  letter-spacing: -0.03em;
}
.prose h3 {
  margin: 1.45rem 0 0.45rem;
  font-family: var(--font-display);
  font-size: 1.12rem;
  letter-spacing: -0.02em;
  color: #d7e4dc;
}
.prose p, .prose li { color: var(--muted); }
.prose ul { padding-left: 1.15rem; }
.prose li + li { margin-top: 0.35rem; }
.prose strong { color: #dce8e1; font-weight: 700; }

.site-footer {
  border-top: 1px solid var(--line);
  padding: 1.5rem 0 2.2rem;
  color: var(--muted);
  font-size: 0.9rem;
}
.site-footer strong { color: var(--ink); }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* Advanced calculator shell */
.calc-panel {
  padding: 0;
  overflow: hidden;
  animation: rise 0.8s var(--ease) 0.05s both;
}
.calc-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.35rem;
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(90deg, rgba(45, 212, 191, 0.12), transparent 45%),
    rgba(0, 0, 0, 0.25);
}
.calc-bar h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.calc-bar .pill {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid rgba(45, 212, 191, 0.35);
  border-radius: 999px;
  padding: 0.28rem 0.6rem;
  background: var(--accent-dim);
}
.calc-body { padding: 1.35rem 1.4rem 1.5rem; }

.calculatorInputGroup { margin-bottom: 1.15rem; }
.calculatorInputGroup label {
  font-weight: 700;
  font-size: 0.92rem;
  letter-spacing: 0.01em;
}
.nmbr_real {
  display: block;
  width: 100%;
  margin-top: 0.55rem;
  border: 1px solid var(--line-strong);
  background: rgba(0, 0, 0, 0.28);
  border-radius: 16px;
  padding: 1rem 1.1rem;
  font: inherit;
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--ink);
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease), background 0.2s var(--ease);
}
.nmbr_real::placeholder { color: #6f8178; font-weight: 500; }
.nmbr_real:focus {
  outline: none;
  border-color: rgba(45, 212, 191, 0.65);
  box-shadow: 0 0 0 4px rgba(45, 212, 191, 0.15);
  background: rgba(0, 0, 0, 0.38);
}

.commonTable {
  display: grid;
  gap: 0.65rem;
  margin-top: 0.35rem;
  padding: 1rem;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.2);
}
.commonTable .row {
  display: grid;
  grid-template-columns: minmax(130px, 170px) 1fr;
  gap: 0.7rem 1rem;
  align-items: center;
  padding: 0.45rem 0.35rem;
  border-radius: 12px;
  transition: background 0.2s var(--ease);
}
.commonTable .row:hover { background: rgba(255, 255, 255, 0.03); }
.commonTable .row:first-child {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  padding-bottom: 0.55rem;
  margin-bottom: 0.15rem;
  border-bottom: 1px solid var(--line);
}
.commonTable .row:first-child:hover { background: transparent; }
.commonTable .cell {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
}
.commonTable .cell input[type="radio"] {
  width: 1.1rem;
  height: 1.1rem;
  accent-color: var(--accent);
}
.commonTable .cell label {
  font-weight: 600;
  cursor: pointer;
}
.commonTable select,
#get_link {
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.04);
  color: var(--ink);
  border-radius: 12px;
  padding: 0.55rem 0.75rem;
  font: inherit;
  font-weight: 500;
}
.commonTable select {
  min-width: 170px;
  max-width: 100%;
  cursor: pointer;
}
.commonTable select option { color: #111; }
.check-cell select { min-width: 118px; }
.letterCase { font-weight: 600; color: var(--muted); }

.actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.7rem;
  margin-top: 1.2rem;
}

.answer-box {
  margin-top: 1.25rem;
  border: 1px solid rgba(45, 212, 191, 0.28);
  background:
    linear-gradient(145deg, rgba(45, 212, 191, 0.14), rgba(240, 180, 41, 0.05)),
    rgba(0, 0, 0, 0.28);
  border-radius: 18px;
  padding: 1rem 1.1rem 1.15rem;
  min-height: 6.2rem;
  position: relative;
  overflow: hidden;
}
.answer-box.is-fresh {
  animation: answerPulse 0.55s var(--ease);
}
.answer-box::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: linear-gradient(180deg, var(--accent), var(--accent-2));
}
.answer-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.45rem;
}
.answer-head strong {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}
.share-row {
  margin-top: 1.05rem;
  display: grid;
  gap: 0.4rem;
}
.share-row label {
  font-weight: 700;
  font-size: 0.88rem;
}
#get_link {
  width: 100%;
  color: var(--muted);
}

@keyframes rise {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes answerPulse {
  0% { box-shadow: 0 0 0 0 rgba(45, 212, 191, 0.0); }
  40% { box-shadow: 0 0 0 8px rgba(45, 212, 191, 0.18); }
  100% { box-shadow: 0 0 0 0 rgba(45, 212, 191, 0); }
}

/* Shared multi-tool form patterns */
.nav a[aria-current="page"] { color: var(--accent); }

.mode-grid {
  display: grid;
  gap: 0.55rem;
  margin-bottom: 1.15rem;
}
.mode-option {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(0, 0, 0, 0.2);
  cursor: pointer;
  font-weight: 600;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}
.mode-option:hover { border-color: var(--line-strong); }
.mode-option:has(input:checked) {
  border-color: rgba(45, 212, 191, 0.45);
  background: var(--accent-dim);
}
.mode-option input {
  width: 1.1rem;
  height: 1.1rem;
  accent-color: var(--accent);
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem 1rem;
}
.field label {
  display: block;
  font-weight: 700;
  font-size: 0.92rem;
}
.field .nmbr_real { margin-top: 0.45rem; font-size: 1.15rem; }

.answer-sub {
  margin: 0.35rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.stat-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.65rem;
  margin-top: 1rem;
}
.stat {
  padding: 0.7rem 0.75rem;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.22);
}
.stat span {
  display: block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.25rem;
}
.stat strong {
  font-family: var(--font-display);
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}

.preset-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1rem 0 0.2rem;
}
.chip {
  appearance: none;
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.04);
  color: var(--ink);
  border-radius: 999px;
  padding: 0.4rem 0.85rem;
  font: inherit;
  font-size: 0.88rem;
  font-weight: 700;
  cursor: pointer;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease), color 0.2s var(--ease);
}
.chip:hover { border-color: rgba(45, 212, 191, 0.45); }
.chip.is-active {
  border-color: rgba(45, 212, 191, 0.55);
  background: var(--accent-dim);
  color: var(--accent);
}

/* Live visitor widget */
.visit-widget {
  position: fixed;
  left: 1rem;
  bottom: 1rem;
  z-index: 40;
  padding: 0.55rem 0.85rem;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: rgba(11, 18, 16, 0.88);
  backdrop-filter: blur(14px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--muted);
  animation: rise 0.7s var(--ease) 0.3s both;
}
.visit-row {
  display: flex;
  align-items: center;
  gap: 0.7rem;
}
.visit-live, .visit-total {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}
.visit-widget strong {
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 0.92rem;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}
.visit-sep {
  width: 1px;
  height: 0.9rem;
  background: var(--line-strong);
}
.visit-dot {
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: #34d399;
  box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.55);
  animation: livePulse 1.8s ease-out infinite;
}
@keyframes livePulse {
  0% { box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.55); }
  70% { box-shadow: 0 0 0 8px rgba(52, 211, 153, 0); }
  100% { box-shadow: 0 0 0 0 rgba(52, 211, 153, 0); }
}

@media (max-width: 720px) {
  .site-header { flex-wrap: wrap; }
  .hero { padding-top: 2.2rem; }
  .actions { justify-content: stretch; }
  .actions .btn { flex: 1; }
  .commonTable .row {
    grid-template-columns: 1fr;
    gap: 0.4rem;
  }
  .commonTable .row:first-child { display: none; }
  .field-grid { grid-template-columns: 1fr; }
  .stat-row { grid-template-columns: 1fr; }
  .nav { gap: 0.85rem; font-size: 0.88rem; }
  .visit-widget { left: 0.75rem; bottom: 0.75rem; right: auto; }
}