:root {
  --bg-1: #090d21;
  --bg-2: #03050f;
  --bg-3: #06132a;
  --glow-left: rgba(255, 25, 95, 0.42);
  --glow-right: rgba(36, 249, 230, 0.35);
  --panel: rgba(20, 24, 36, 0.86);
  --panel-2: rgba(10, 13, 24, 0.65);
  --text: #f2f6ff;
  --muted: #a8b4d0;
  --brand: #67f6ff;
  --accent: #ff2f7d;
  --line: rgba(255, 255, 255, 0.14);
  --chip: rgba(255, 255, 255, 0.04);
  --chip-line: rgba(255, 255, 255, 0.2);
  --nav: rgba(90, 113, 140, 0.56);
  --font-ui: "Segoe UI Semibold", "PingFang SC", "Noto Sans SC", sans-serif;
  --font-title: "Arial Black", "Bahnschrift", "Segoe UI", "Noto Sans SC", sans-serif;
}

[data-theme="light"] {
  --bg-1: #f4f7fb;
  --bg-2: #edf3f9;
  --bg-3: #e4edf8;
  --glow-left: rgba(255, 84, 145, 0.1);
  --glow-right: rgba(26, 196, 205, 0.1);
  --panel: rgba(255, 255, 255, 0.98);
  --panel-2: rgba(247, 251, 255, 0.98);
  --text: #13263e;
  --muted: #4f6783;
  --brand: #005f7f;
  --accent: #9e214c;
  --line: rgba(22, 46, 74, 0.2);
  --chip: rgba(27, 57, 90, 0.06);
  --chip-line: rgba(22, 46, 74, 0.24);
  --nav: rgba(113, 132, 153, 0.34);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: var(--font-ui);
  background:
    radial-gradient(circle at 8% 15%, var(--glow-left), transparent 36%),
    radial-gradient(circle at 90% 82%, var(--glow-right), transparent 34%),
    linear-gradient(140deg, var(--bg-1) 0%, var(--bg-2) 52%, var(--bg-3) 100%);
  padding: 16px;
  overflow-x: hidden;
  letter-spacing: 0.01em;
}

.particle-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

body::before,
body::after {
  content: "";
  position: fixed;
  width: 42vmax;
  height: 42vmax;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(56px);
  opacity: 0.2;
  z-index: 0;
  animation: drift 16s ease-in-out infinite;
}

body::before {
  background: #ff0f6b;
  left: -16vmax;
  top: -12vmax;
}

body::after {
  background: #18f0ff;
  right: -18vmax;
  bottom: -15vmax;
  animation-delay: -7s;
}

.app {
  position: relative;
  z-index: 1;
  width: min(1100px, 100%);
  margin: 0 auto;
  min-height: calc(100vh - 32px);
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 16px;
}

.topbar {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 16px;
  border-radius: 24px;
  border: 1px solid var(--line);
  background: var(--nav);
  backdrop-filter: blur(10px);
  padding: 12px 18px;
  animation: revealDown 0.5s ease both;
}

.brand {
  font-family: var(--font-title);
  font-size: 1.9rem;
  line-height: 1;
  letter-spacing: 0.03em;
}

.nav {
  display: flex;
  gap: 6px;
  justify-self: center;
}

.nav button {
  height: 38px;
  min-width: 84px;
  border-radius: 10px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: background 0.22s ease, border-color 0.22s ease, transform 0.22s ease;
}

.nav button:hover {
  transform: translateY(-1px);
}

.nav button.active {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.1);
}

.theme-select {
  height: 38px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(30, 47, 70, 0.46);
  color: var(--text);
  padding: 0 14px;
  font-family: var(--font-ui);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  outline: none;
}

[data-theme="light"] .theme-select {
  background: #ffffff;
  border-color: rgba(22, 46, 74, 0.26);
}

.view {
  display: none;
}

.view.active {
  display: grid;
}

.home-view {
  place-items: center;
  align-content: center;
}

.hero-card {
  width: min(94vw, 500px);
  border-radius: 24px;
  border: 1px solid var(--line);
  background: linear-gradient(160deg, var(--panel), rgba(18, 21, 34, 0.78));
  box-shadow: 0 22px 60px rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(10px);
  padding: 40px 26px 24px;
  text-align: center;
  animation: floatPanel 5s ease-in-out infinite;
}

[data-theme="light"] .hero-card {
  box-shadow: 0 18px 36px rgba(67, 94, 126, 0.16);
  background: linear-gradient(160deg, #ffffff, #f5f9ff);
}

.hero-title {
  margin: 0;
  font-family: var(--font-title);
  font-size: clamp(2.3rem, 7vw, 3.5rem);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--brand);
}

.ready-pill {
  margin: 14px auto 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid rgba(44, 246, 255, 0.68);
  color: var(--brand);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  animation: pulse 2.8s ease-in-out infinite;
}

.hero-text {
  min-height: 128px;
  margin: 28px 0 22px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: var(--panel-2);
  padding: 18px;
  line-height: 1.72;
  display: grid;
  place-items: center;
  transition: border-color 0.28s ease, transform 0.28s ease;
}

.hero-text.flash {
  border-color: rgba(44, 246, 255, 0.6);
  transform: translateY(-3px) scale(1.006);
}

.hero-actions {
  display: grid;
  gap: 10px;
  justify-items: center;
}

.primary-btn,
.ghost-btn,
.tools button {
  height: 52px;
  border-radius: 999px;
  border: 2px solid var(--accent);
  background: linear-gradient(135deg, rgba(255, 47, 125, 0.16), rgba(255, 47, 125, 0.04));
  color: #fff;
  font-family: var(--font-ui);
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.07em;
  cursor: pointer;
  padding: 0 24px;
  transition: transform 0.2s ease, filter 0.2s ease;
}

.primary-btn:hover,
.ghost-btn:hover,
.tools button:hover {
  transform: translateY(-2px);
  filter: saturate(1.08);
}

[data-theme="light"] .primary-btn,
[data-theme="light"] .ghost-btn,
[data-theme="light"] .tools button {
  color: #11243d;
  border-color: #a92b56;
  background: linear-gradient(135deg, rgba(169, 43, 86, 0.16), rgba(169, 43, 86, 0.05));
}

.ghost-btn {
  border-color: rgba(44, 246, 255, 0.55);
  background: linear-gradient(135deg, rgba(44, 246, 255, 0.13), rgba(44, 246, 255, 0.04));
  height: 42px;
  font-size: 0.9rem;
}

[data-theme="light"] .ghost-btn {
  border-color: #0d6f8e;
  background: linear-gradient(135deg, rgba(13, 111, 142, 0.15), rgba(13, 111, 142, 0.05));
}

.hero-meta {
  margin-top: 6px;
  color: var(--muted);
  font-size: 0.81rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  min-height: 1.2em;
}

.tools-view {
  align-content: start;
}

.tools {
  border-radius: 20px;
  border: 1px solid var(--line);
  background: rgba(8, 12, 22, 0.64);
  padding: 14px;
  animation: revealUp 0.45s ease both;
}

[data-theme="light"] .tools {
  background: rgba(255, 255, 255, 0.96);
  border-color: rgba(22, 46, 74, 0.22);
}

.tools h2 {
  margin: 0 0 12px;
  font-family: var(--font-title);
  font-size: 1rem;
  letter-spacing: 0.08em;
  color: var(--brand);
  text-transform: uppercase;
}

.tools-tabs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 12px;
}

.tools-tab {
  height: 40px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.02);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease;
}

.tools-tab:hover {
  transform: translateY(-1px);
}

.tools-tab.active {
  border-color: rgba(44, 246, 255, 0.7);
  background: rgba(44, 246, 255, 0.1);
}

[data-theme="light"] .tools-tab {
  background: rgba(255, 255, 255, 0.9);
}

[data-theme="light"] .tools-tab.active {
  border-color: rgba(13, 111, 142, 0.65);
  background: rgba(13, 111, 142, 0.12);
}

.tools-panels {
  margin-top: 4px;
}

.tools-panel {
  display: none;
  animation: fadeIn 0.24s ease;
}

.tools-panel.active {
  display: block;
}

.row {
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr auto;
  margin-bottom: 12px;
}

.row.single {
  grid-template-columns: 1fr;
}

.tools input {
  height: 42px;
  border-radius: 12px;
  border: 1px solid var(--chip-line);
  background: rgba(6, 9, 18, 0.8);
  color: var(--text);
  padding: 0 12px;
  font-family: var(--font-ui);
  font-size: 0.95rem;
  outline: none;
}

[data-theme="light"] .tools input {
  background: #ffffff;
  border-color: rgba(22, 46, 74, 0.24);
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

.chip {
  border: 1px solid var(--chip-line);
  background: var(--chip);
  color: var(--text);
  border-radius: 999px;
  padding: 6px 10px;
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  user-select: none;
  transition: transform 0.2s ease;
}

.chip:hover {
  transform: translateY(-1px);
}

.chip.on {
  border-color: rgba(44, 246, 255, 0.75);
  background: rgba(44, 246, 255, 0.08);
}

[data-theme="light"] .chip.on {
  border-color: rgba(13, 111, 142, 0.66);
  background: rgba(13, 111, 142, 0.12);
}

.box {
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(6, 9, 18, 0.56);
  padding: 10px;
}

[data-theme="light"] .box {
  background: rgba(249, 252, 255, 0.98);
  border-color: rgba(22, 46, 74, 0.22);
}

.box h3 {
  margin: 0 0 8px;
  font-family: var(--font-title);
  font-size: 0.93rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brand);
}

.box-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.box-tip {
  color: var(--muted);
  font-size: 0.78rem;
  margin-bottom: 8px;
}

.mini-btn {
  height: 32px;
  border-radius: 9px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0 10px;
  cursor: pointer;
}

.mini-btn:hover {
  background: rgba(255, 255, 255, 0.14);
}

.list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
  max-height: 290px;
  overflow: auto;
}

.list button {
  all: unset;
  display: block;
  width: 100%;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.02);
  padding: 9px;
  cursor: pointer;
  line-height: 1.46;
  font-size: 0.88rem;
  font-weight: 650;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.list button:hover {
  border-color: rgba(44, 246, 255, 0.54);
  transform: translateY(-1px);
}

[data-theme="light"] .list button {
  background: #ffffff;
}

[data-theme="light"] .list button:hover {
  border-color: rgba(13, 111, 142, 0.62);
  background: rgba(13, 111, 142, 0.07);
}

.empty {
  color: var(--muted);
  font-size: 0.88rem;
  padding: 8px;
}

.copyright {
  text-align: center;
  color: var(--muted);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  padding: 8px 0;
}

.reveal {
  animation: revealUp 0.55s ease both;
}

@media (max-width: 700px) {
  .topbar {
    grid-template-columns: 1fr;
    justify-items: stretch;
    gap: 10px;
    padding: 12px;
  }

  .brand {
    text-align: center;
  }

  .nav {
    justify-content: center;
  }

  .theme-select {
    width: 100%;
  }

  .hero-card {
    width: min(94vw, 520px);
    padding: 28px 16px 18px;
  }

  .hero-text {
    min-height: 114px;
    margin-top: 22px;
  }

  .primary-btn,
  .tools button {
    width: 100%;
  }

  .tools-tabs {
    grid-template-columns: 1fr;
  }

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

  body {
    padding: 12px;
  }
}

@keyframes floatPanel {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-8px); }
}

@keyframes drift {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(2vmax, -2vmax) scale(1.08); }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.04); }
}

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

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

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}