@property --angle {
  syntax: "<angle>";
  initial-value: 0deg;
  inherits: false;
}

:root {
  --bg: #07090e;
  --bg-2: #0a0d14;
  --ink: #e9eef6;
  --ink-soft: #c3ccdb;
  --muted: #7a8597;
  --muted-2: #545d6e;
  --accent: #39ff88;
  --accent-2: #b6ff3b;
  --line: rgba(180, 200, 230, 0.1);
  --line-soft: rgba(180, 200, 230, 0.06);
  --card: rgba(12, 18, 28, 0.32);
  --card-hover: rgba(16, 24, 36, 0.45);
  --blur: 22px;
  --font-display: "Chakra Petch", sans-serif;
  --font-body: "Inter", sans-serif;
  --font-mono: "JetBrains Mono", monospace;
  --max: 1280px;
  --pad: clamp(1.1rem, 3.5vw, 2.25rem);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.5;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
  text-decoration: none;
}

::selection {
  background: rgba(57, 255, 136, 0.25);
  color: #fff;
}

/* ---------- animated background ---------- */

.bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  background:
    radial-gradient(130% 95% at 50% -10%, var(--bg-2) 0%, var(--bg) 55%, #05060a 100%);
  pointer-events: none;
}

.bg-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.vignette {
  position: absolute;
  inset: 0;
  background: radial-gradient(120% 90% at 50% 50%, transparent 48%, rgba(0, 0, 0, 0.55) 100%);
  pointer-events: none;
}

/* ---------- layout ---------- */

.shell {
  position: relative;
  z-index: 1;
  height: 100dvh;
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(1.1rem, 2.6vh, 1.75rem) var(--pad);
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: clamp(0.9rem, 2.2vh, 1.6rem);
}

/* ---------- header ---------- */

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}

.logo-mark {
  display: grid;
  place-items: center;
  width: 1.7rem;
  height: 1.7rem;
  border-radius: 9px;
  background: linear-gradient(150deg, rgba(57, 255, 136, 0.18), rgba(182, 255, 59, 0.14));
  border: 1px solid rgba(57, 255, 136, 0.28);
}

.logo-dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px rgba(57, 255, 136, 0.9);
  animation: blink 3s ease-in-out infinite;
}

.logo-text {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.meta {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.meta-dot {
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px rgba(57, 255, 136, 0.8);
  animation: blink 3s ease-in-out infinite;
}

.meta-sep {
  color: var(--muted-2);
}

/* ---------- main ---------- */

.main {
  display: grid;
  grid-template-rows: auto 1fr;
  gap: clamp(1.1rem, 3vh, 2.25rem);
  align-content: center;
  min-height: 0;
}

/* ---------- hero ---------- */

.hero {
  text-align: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin: 0 0 1rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
}

.eyebrow-line {
  width: 2rem;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--muted));
}

.brand {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.4rem, 7.5vw, 4.25rem);
  line-height: 1;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.brand span {
  background: linear-gradient(110deg, #e9eef6 8%, var(--accent) 45%, var(--accent-2) 70%, #e9eef6 95%);
  background-size: 240% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: sheen 11s ease-in-out infinite;
}

.lead {
  margin: 0.85rem auto 0;
  max-width: 34ch;
  color: var(--ink-soft);
  font-size: clamp(0.98rem, 1.6vw, 1.1rem);
  font-weight: 400;
}

/* ---------- cards ---------- */

.cards {
  list-style: none;
  margin: 0;
  padding: 0;
  min-height: 0;
  max-width: 1120px;
  width: 100%;
  margin-inline: auto;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  grid-auto-rows: 1fr;
  gap: clamp(0.5rem, 1vw, 0.7rem);
}

.card {
  position: relative;
  min-height: 0;
  border-radius: 12px;
  padding: 1px;
  background: var(--line-soft);
  transform: translateY(14px);
  animation: rise 0.75s cubic-bezier(0.22, 1, 0.36, 1) forwards;
  animation-delay: calc(0.18s + var(--i, 0) * 95ms);
}

.card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: conic-gradient(
    from var(--angle),
    transparent 0turn,
    rgba(57, 255, 136, 0.75) 0.1turn,
    rgba(182, 255, 59, 0.75) 0.2turn,
    transparent 0.32turn,
    transparent 1turn
  );
  -webkit-mask:
    linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask:
    linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  mask-composite: exclude;
  opacity: 0;
  animation: rotate-border 8s linear infinite;
  animation-delay: calc(var(--i, 0) * -2s);
  transition: opacity 0.45s ease;
  pointer-events: none;
}

.card:hover::before {
  opacity: 1;
}

.card-link {
  position: relative;
  height: 100%;
  border-radius: 11px;
  padding: clamp(0.62rem, 1.4vh, 0.85rem);
  display: flex;
  align-items: center;
  gap: clamp(0.55rem, 1.1vw, 0.75rem);
  background: var(--card);
  backdrop-filter: blur(var(--blur)) saturate(1.2);
  -webkit-backdrop-filter: blur(var(--blur)) saturate(1.2);
  overflow: hidden;
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1), background 0.35s ease;
}

.card-link::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    16rem 16rem at var(--mx, 50%) var(--my, 50%),
    rgba(57, 255, 136, 0.12),
    transparent 70%
  );
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}

.card-link:hover {
  transform: translateY(-3px);
  background: var(--card-hover);
}

.card-link:hover::after {
  opacity: 1;
}

.card-index {
  flex: none;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  color: var(--muted-2);
  align-self: flex-start;
  margin-top: 0.05rem;
  transition: color 0.3s ease;
}

.card-link:hover .card-index {
  color: var(--accent);
}

.card-icon {
  flex: none;
  display: grid;
  place-items: center;
  width: clamp(1.7rem, 3.6vh, 2.1rem);
  aspect-ratio: 1;
  border-radius: 8px;
  color: var(--accent);
  background: linear-gradient(150deg, rgba(57, 255, 136, 0.14), rgba(182, 255, 59, 0.1));
  border: 1px solid rgba(57, 255, 136, 0.2);
  transition: color 0.35s ease, transform 0.35s ease, border-color 0.35s ease;
}

.card-icon svg {
  width: 52%;
  height: 52%;
}

.card-link:hover .card-icon {
  color: #baffd5;
  transform: scale(1.05);
  border-color: rgba(57, 255, 136, 0.4);
}

.card-body {
  display: grid;
  gap: 0.25rem;
  min-width: 0;
  flex: 1;
}

.card-title {
  font-family: var(--font-display);
  font-size: clamp(0.88rem, 1.4vw, 1rem);
  font-weight: 600;
  letter-spacing: -0.015em;
  color: var(--ink);
}

.card-blurb {
  color: var(--muted);
  font-size: clamp(0.72rem, 1vw, 0.8rem);
  line-height: 1.35;
}

.card-side {
  flex: none;
  display: grid;
  justify-items: end;
  gap: 0.4rem;
  align-self: stretch;
  padding-top: 0.1rem;
}

.card-tag {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted-2);
  transition: color 0.3s ease;
}

.card-link:hover .card-tag {
  color: var(--ink-soft);
}

.card-arrow {
  font-size: 0.9rem;
  color: var(--muted);
  transition: transform 0.35s ease, color 0.35s ease;
}

.card-link:hover .card-arrow {
  color: var(--accent);
  transform: translateX(5px);
}

/* ---------- tool pages (e.g. /ip/) ---------- */

.page-tool {
  overflow: auto;
}

.page-tool .shell {
  height: auto;
  min-height: 100dvh;
  max-width: min(1180px, 100%);
}

.tool-main {
  display: grid;
  gap: clamp(1.25rem, 3vh, 2rem);
  align-content: start;
  width: 100%;
  min-height: 0;
}

.tool-hero {
  text-align: center;
}

.tool-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.75rem, 4.5vw, 2.35rem);
  letter-spacing: -0.04em;
  line-height: 1.15;
}

.tool-lead {
  margin: 0.65rem auto 0;
  max-width: 36ch;
  color: var(--ink-soft);
  font-size: clamp(0.95rem, 1.5vw, 1.05rem);
  font-weight: 400;
}

.ip-panel {
  position: relative;
  border-radius: 16px;
  padding: clamp(1.25rem, 3vw, 1.75rem);
  background: var(--card);
  border: 1px solid var(--line-soft);
  backdrop-filter: blur(var(--blur)) saturate(1.2);
  -webkit-backdrop-filter: blur(var(--blur)) saturate(1.2);
  text-align: center;
  transform: translateY(12px);
  animation: rise 0.7s cubic-bezier(0.22, 1, 0.36, 1) 0.08s forwards;
  transition: background 0.35s ease, border-color 0.35s ease;
}

.ip-panel:hover {
  background: var(--card-hover);
  border-color: var(--line);
}

.ip-panel-top {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 0.85rem;
}

.ip-badge {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  padding: 0.2rem 0.55rem;
  border-radius: 8px;
  border: 1px solid rgba(57, 255, 136, 0.28);
  background: rgba(57, 255, 136, 0.08);
}

.ip-checked {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.ip-value {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: clamp(1.55rem, 6.5vw, 2.65rem);
  letter-spacing: -0.02em;
  line-height: 1.2;
  word-break: break-all;
  background: linear-gradient(110deg, #e9eef6 10%, var(--accent) 48%, var(--accent-2) 78%, #e9eef6 100%);
  background-size: 220% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: sheen 12s ease-in-out infinite;
}

.ip-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  flex-wrap: wrap;
  margin-top: 1.25rem;
  position: relative;
}

.btn {
  appearance: none;
  border: 1px solid transparent;
  border-radius: 10px;
  padding: 0.55rem 1.05rem;
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  cursor: pointer;
  transition: background 0.25s ease, border-color 0.25s ease, color 0.25s ease, transform 0.25s ease;
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn-primary {
  color: #061014;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-color: transparent;
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-1px);
  filter: brightness(1.05);
}

.btn-ghost {
  color: var(--ink-soft);
  background: transparent;
  border-color: var(--line);
}

.btn-ghost:hover:not(:disabled) {
  color: var(--ink);
  border-color: rgba(57, 255, 136, 0.35);
  background: rgba(57, 255, 136, 0.06);
}

.btn-text {
  color: var(--muted);
  background: transparent;
  border: none;
  padding: 0.25rem 0.35rem;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.btn-text:hover {
  color: var(--accent);
}

.ip-toast {
  position: absolute;
  left: 50%;
  bottom: calc(100% + 0.55rem);
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  white-space: nowrap;
  pointer-events: none;
}

.tool-facts {
  display: grid;
  gap: 0.65rem;
  transform: translateY(12px);
  animation: rise 0.7s cubic-bezier(0.22, 1, 0.36, 1) 0.16s forwards;
}

@media (min-width: 720px) {
  .tool-facts {
    grid-template-columns: minmax(0, 2.4fr) minmax(0, 1fr) minmax(0, 1fr);
    align-items: stretch;
  }
}

.fact {
  display: grid;
  gap: 0.25rem;
  padding: 0.85rem 1rem;
  border-radius: 12px;
  border: 1px solid var(--line-soft);
  background: var(--card);
  backdrop-filter: blur(var(--blur)) saturate(1.2);
  -webkit-backdrop-filter: blur(var(--blur)) saturate(1.2);
  transition: background 0.35s ease, border-color 0.35s ease;
}

.fact:hover {
  background: var(--card-hover);
  border-color: var(--line);
}

.fact-label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 500;
}

.fact-value {
  margin: 0;
  font-size: 0.92rem;
  color: var(--ink-soft);
  line-height: 1.45;
}

.fact-value-wrap {
  overflow-wrap: anywhere;
  word-break: break-word;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--muted);
}

.ip-history {
  border-radius: 16px;
  padding: clamp(1rem, 2.5vw, 1.35rem);
  background: var(--card);
  border: 1px solid var(--line-soft);
  backdrop-filter: blur(var(--blur)) saturate(1.2);
  -webkit-backdrop-filter: blur(var(--blur)) saturate(1.2);
  transform: translateY(12px);
  animation: rise 0.7s cubic-bezier(0.22, 1, 0.36, 1) 0.24s forwards;
  transition: background 0.35s ease, border-color 0.35s ease;
}

.ip-history:hover {
  background: var(--card-hover);
  border-color: var(--line);
}

.ip-history-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
}

.ip-history-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.ip-history-count {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted-2);
  white-space: nowrap;
}

.ip-history-list {
  list-style: none;
  margin: 0.55rem 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.ip-history-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  column-gap: 1rem;
  row-gap: 0.15rem;
  align-items: baseline;
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--line-soft);
}

.ip-history-ip {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--ink);
  overflow-wrap: anywhere;
}

.ip-history-meta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.02em;
  color: var(--muted);
  white-space: nowrap;
}

.ip-history-ua {
  grid-column: 1 / -1;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  line-height: 1.35;
  color: var(--muted-2);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.ip-history-empty {
  margin: 0.7rem 0 0;
  color: var(--muted-2);
  font-size: 0.85rem;
}

@media (min-width: 860px) {
  .ip-value {
    font-size: clamp(2rem, 4vw, 3.1rem);
  }

  .ip-history-item {
    grid-template-columns: 13.5rem minmax(0, 1fr) 11.5rem;
    column-gap: 1.25rem;
  }

  .ip-history-ua {
    grid-column: auto;
  }

  .ip-history-meta {
    text-align: right;
  }
}

@media (max-width: 560px) {
  .ip-history-item {
    grid-template-columns: 1fr;
    row-gap: 0.2rem;
  }

  .ip-history-ua {
    white-space: normal;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
  }
}

/* ---------- footer ---------- */

.footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding-top: 0.9rem;
  border-top: 1px solid var(--line-soft);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
}

.footer-links {
  display: inline-flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: color 0.25s ease;
}

.footer-link svg {
  width: 0.85rem;
  height: 0.85rem;
  opacity: 0.8;
  transition: opacity 0.25s ease;
}

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

.footer-link:hover svg {
  opacity: 1;
}

.footer-mail {
  transition: color 0.25s ease;
}

.footer-mail:hover {
  color: var(--accent);
}

/* ---------- animations ---------- */

@keyframes rise {
  from {
    transform: translateY(14px);
  }
  to {
    transform: none;
  }
}

@keyframes rotate-border {
  to {
    --angle: 360deg;
  }
}

@keyframes sheen {
  0%,
  100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

@keyframes blink {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.4;
  }
}

/* ---------- responsive ---------- */

@media (max-width: 1024px) {
  .cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  body {
    overflow: auto;
  }

  .shell {
    height: auto;
    min-height: 100dvh;
  }

  .cards {
    grid-template-columns: 1fr;
  }

  .card-blurb {
    display: none;
  }

  .card-side {
    align-self: center;
  }
}

@media (max-height: 640px) and (min-width: 761px) {
  .lead {
    display: none;
  }

  .card-blurb {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  .card,
  .ip-panel,
  .tool-facts,
  .ip-history {
    transform: none;
  }
}