:root {
  /* LIGHT PURPLE NEOMORPHISM */
  --bg: #EAE4F6;
  --surface: #F2EEFB;
  --surface-alt: #F9F6FE;
  --surface-sunken: #DFD7F0;
  --ink: #22173C;
  --ink-secondary: #574B78;
  --ink-muted: #8A7EAA;

  --border-soft: rgba(255, 255, 255, 0.9);
  --border-subtle: rgba(165, 145, 215, 0.3);

  --p-accent: #7C3AED;
  --p-accent-hover: #6D28D9;
  --p-gradient: linear-gradient(135deg, #8B5CF6, #6D28D9);
  --p-glow: 0 8px 22px rgba(124, 58, 237, 0.28);

  /* Dual shadow system for light mode */
  --shadow-raised: 8px 8px 18px #cfc6e8, -8px -8px 18px #ffffff;
  --shadow-raised-sm: 4px 4px 10px #cfc6e8, -4px -4px 10px #ffffff;
  --shadow-raised-lg: 14px 14px 28px #c5bce2, -14px -14px 28px #ffffff;
  --shadow-inset: inset 3px 3px 7px #cfc6e8, inset -3px -3px 7px #ffffff;
  --shadow-inset-sm: inset 2px 2px 5px #cfc6e8, inset -2px -2px 5px #ffffff;
  --shadow-inset-lg: inset 5px 5px 12px #c5bce2, inset -5px -5px 12px #ffffff;

  --ok: #10B981;
  --ok-glow: rgba(16, 185, 129, 0.25);
  --warn: #F59E0B;
  --warn-glow: rgba(245, 158, 11, 0.25);
  --bad: #EF4444;
  --bad-glow: rgba(239, 68, 68, 0.25);

  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 22px;
  --radius-pill: 9999px;

  --term-bg: #141024;
  --term-ink: #EDE6FF;
}

[data-theme="dark"] {
  /* DARK PURPLE NEOMORPHISM */
  --bg: #161224;
  --surface: #1E1930;
  --surface-alt: #25203A;
  --surface-sunken: #130F20;
  --ink: #F2EEFF;
  --ink-secondary: #B6ADC9;
  --ink-muted: #7E7497;

  --border-soft: rgba(255, 255, 255, 0.08);
  --border-subtle: rgba(140, 120, 190, 0.18);

  --p-accent: #A78BFA;
  --p-accent-hover: #C4B5FD;
  --p-gradient: linear-gradient(135deg, #A78BFA, #7C3AED);
  --p-glow: 0 8px 26px rgba(167, 139, 250, 0.35);

  /* Dual shadow system for dark mode */
  --shadow-raised: 8px 8px 20px #0E0B17, -8px -8px 20px #2A2343;
  --shadow-raised-sm: 4px 4px 10px #0E0B17, -4px -4px 10px #2A2343;
  --shadow-raised-lg: 14px 14px 32px #0B0813, -14px -14px 32px #2D2648;
  --shadow-inset: inset 4px 4px 8px #0E0B17, inset -4px -4px 8px #2A2343;
  --shadow-inset-sm: inset 2px 2px 6px #0E0B17, inset -2px -2px 6px #2A2343;
  --shadow-inset-lg: inset 6px 6px 14px #0B0813, inset -6px -6px 14px #2D2648;

  --ok: #34D399;
  --ok-glow: rgba(52, 211, 153, 0.3);
  --warn: #FBBF24;
  --warn-glow: rgba(251, 191, 36, 0.3);
  --bad: #F87171;
  --bad-glow: rgba(248, 113, 113, 0.3);

  --term-bg: #110D1D;
  --term-ink: #EDE6FF;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5.5rem;
}

section.block,
#top {
  scroll-margin-top: 5.5rem;
}

body {
  margin: 0;
  background-color: var(--bg);
  color: var(--ink);
  font: 500 16px/1.65 'Space Grotesk', system-ui, -apple-system, sans-serif;
  background-image:
    radial-gradient(circle at 12% 15%, rgba(139, 92, 246, 0.08) 0%, transparent 45%),
    radial-gradient(circle at 88% 85%, rgba(124, 58, 237, 0.08) 0%, transparent 50%);
  background-attachment: fixed;
  transition: background-color 0.35s ease, color 0.35s ease;
  min-height: 100vh;
}

h1,
h2,
h3,
.logo {
  font-family: 'Space Grotesk', system-ui, sans-serif;
  line-height: 1.15;
  margin: 0;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.3rem, 5.2vw, 3.8rem);
  font-weight: 700;
  color: var(--ink);
}

h2 {
  font-size: clamp(1.4rem, 2.6vw, 1.9rem);
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--surface);
  box-shadow: var(--shadow-raised-sm);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-pill);
  padding: 0.5rem 1.4rem;
  color: var(--ink);
}

h2::before {
  content: "";
  display: inline-block;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--p-gradient);
  box-shadow: 0 0 8px var(--p-accent);
}

h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin: 1.8rem 0 0.8rem;
  color: var(--ink);
}

code {
  background: var(--surface-alt);
  box-shadow: var(--shadow-inset-sm);
  border: 1px solid var(--border-subtle);
  padding: 0.2em 0.5em;
  font-size: 0.88em;
  border-radius: 8px;
  color: var(--p-accent);
  font-family: ui-monospace, Menlo, Consolas, monospace;
}

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

:focus-visible {
  outline: 3px solid var(--p-accent);
  outline-offset: 3px;
  border-radius: 8px;
}

/* ==================== NAVBAR ==================== */
.nav {
  position: sticky;
  top: 1rem;
  z-index: 100;
  padding: 0 1.2rem;
  max-width: 1150px;
  margin: 0 auto;
}

.nav-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.55rem 1.1rem;
  background: var(--surface);
  box-shadow: var(--shadow-raised);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-pill);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: all 0.3s ease;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--ink);
  text-decoration: none;
}

.logo-img {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  object-fit: contain;
  box-shadow: var(--shadow-raised-sm);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  display: block;
}

.logo:hover .logo-img {
  transform: scale(1.06);
  box-shadow: var(--shadow-raised);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 1.2rem;
}

.footer-brand .logo-img {
  width: 30px;
  height: 30px;
}

.logo-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--p-gradient);
  color: #fff;
  font-size: 0.95rem;
  box-shadow: var(--p-glow);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  flex-wrap: wrap;
}

.nav-links a {
  text-decoration: none;
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--ink-secondary);
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-pill);
  transition: all 0.25s ease;
}

.nav-links a:hover {
  color: var(--p-accent);
  background: var(--surface-alt);
  box-shadow: var(--shadow-inset-sm);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.btn-gh {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--ink);
  background: var(--surface);
  box-shadow: var(--shadow-raised-sm);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-pill);
  padding: 0.45rem 0.95rem;
  transition: all 0.25s ease;
}

.btn-gh:hover {
  box-shadow: var(--shadow-raised);
  transform: translateY(-2px);
  color: var(--p-accent);
}

.btn-gh:active {
  box-shadow: var(--shadow-inset-sm);
  transform: translateY(1px);
}

/* Theme Toggle */
.theme-toggle {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--border-soft);
  background: var(--surface);
  box-shadow: var(--shadow-raised-sm);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--ink);
  font-size: 1.05rem;
  transition: all 0.25s ease;
}

.theme-toggle:hover {
  box-shadow: var(--shadow-raised);
  transform: scale(1.06);
}

.theme-toggle:active {
  box-shadow: var(--shadow-inset-sm);
  transform: scale(0.94);
}

[data-theme="dark"] .theme-toggle .icon-sun {
  display: block;
}

[data-theme="dark"] .theme-toggle .icon-moon {
  display: none;
}

:root:not([data-theme="dark"]) .theme-toggle .icon-sun {
  display: none;
}

:root:not([data-theme="dark"]) .theme-toggle .icon-moon {
  display: block;
}

/* ==================== MAIN LAYOUT ==================== */
main {
  max-width: 1150px;
  margin: 0 auto;
  padding: 0 1.2rem;
}

.hero {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 2.5rem;
  align-items: center;
  padding: 4rem 0 2.5rem;
}

.lead {
  font-size: 1.15rem;
  line-height: 1.65;
  color: var(--ink-secondary);
  max-width: 34em;
  margin-top: 1rem;
}

.row {
  display: flex;
  gap: 0.9rem;
  flex-wrap: wrap;
  margin-top: 1.6rem;
}

/* ==================== BUTTONS ==================== */
.btn {
  font: 600 0.95rem 'Space Grotesk', sans-serif;
  background: var(--surface);
  color: var(--ink);
  border: 1px solid var(--border-soft);
  /* box-shadow: var(--shadow-raised-sm); */
  border-radius: var(--radius-pill);
  padding: 0.65rem 1.3rem;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease, color 0.2s ease;
}

.btn:hover {
  /* box-shadow: var(--shadow-raised); */
  transform: translateY(-2px);
  color: var(--p-accent);
}

.btn:active {
  box-shadow: var(--shadow-inset-sm);
  transform: translateY(1px);
}

.btn.primary {
  background: var(--p-gradient);
  color: #ffffff !important;
  border: none;
  /* box-shadow: var(--p-glow), var(--shadow-raised-sm); */
}

.btn.primary:hover {
  /* box-shadow: 0 10px 28px rgba(124, 58, 237, 0.45), var(--shadow-raised); */
}

.btn.primary:active {
  box-shadow: inset 2px 2px 6px rgba(0, 0, 0, 0.3);
}

.btn.alt {
  background: var(--surface-alt);
  color: var(--ink-secondary);
}

.btn.alt:hover {
  background: var(--surface);
  color: var(--ink);
}

.btn.big {
  font-size: 1.05rem;
  padding: 0.75rem 1.6rem;
}

.btn[disabled] {
  opacity: 0.55;
  cursor: not-allowed;
  box-shadow: var(--shadow-inset-sm) !important;
  transform: none !important;
}

/* ==================== TERMINAL ==================== */
.term {
  background: var(--term-bg);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-raised), 0 16px 36px rgba(15, 12, 26, 0.22);
  border-radius: var(--radius-lg);
  color: var(--term-ink);
  overflow: hidden;
  min-width: 0;
  transition: all 0.3s ease;
}

.term-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 0.75rem 1.1rem;
  background: rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.term-bar i {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  display: inline-block;
}

.term-bar i:nth-child(1) {
  background: #FF5F56;
}

.term-bar i:nth-child(2) {
  background: #FFBD2E;
}

.term-bar i:nth-child(3) {
  background: #27C93F;
}

.term pre {
  margin: 0;
  padding: 1.2rem;
  font: 500 0.88rem/1.65 ui-monospace, Menlo, Consolas, monospace;
  white-space: pre-wrap;
  word-break: break-word;
  min-height: 15rem;
  color: #D6CAFC;
}

.big-term pre {
  min-height: 24rem;
  max-height: 34rem;
  overflow: auto;
}

.big-term .row {
  padding: 0 1.2rem 1.2rem;
}

.g {
  color: var(--ok);
  font-weight: 600;
}

.y {
  color: var(--warn);
  font-weight: 600;
}

.r {
  color: var(--bad);
  font-weight: 600;
}

.m {
  color: #C4B5FD;
  font-weight: 600;
}

.d {
  opacity: 0.65;
}

/* ==================== SECTIONS & CARDS ==================== */
.block {
  padding: 4rem 0 1.5rem;
}

.sub {
  max-width: 44em;
  margin: 1.2rem 0 1.6rem;
  color: var(--ink-secondary);
  font-size: 1.05rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-raised);
  border-radius: var(--radius-lg);
  padding: 1.6rem;
  transition: box-shadow 0.3s ease;
}

.sim {
  display: grid;
  grid-template-columns: minmax(280px, 1fr) 1.5fr;
  gap: 1.8rem;
  align-items: start;
}

.controls {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

label {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  font-weight: 600;
  color: var(--ink);
}

label.chk {
  flex-direction: row;
  align-items: center;
  gap: 0.75rem;
  font-weight: 500;
  cursor: pointer;
  color: var(--ink-secondary);
}

label.chk:hover {
  color: var(--ink);
}

input[type=checkbox] {
  appearance: none;
  -webkit-appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 7px;
  background: var(--surface);
  box-shadow: var(--shadow-inset-sm);
  border: 1px solid var(--border-subtle);
  cursor: pointer;
  display: grid;
  place-content: center;
  transition: all 0.2s ease;
  flex: none;
}

input[type=checkbox]:checked {
  background: var(--p-gradient);
  box-shadow: var(--p-glow);
  border-color: transparent;
}

input[type=checkbox]:checked::before {
  content: "";
  width: 9px;
  height: 5px;
  border-left: 2px solid #fff;
  border-bottom: 2px solid #fff;
  transform: rotate(-45deg) translate(1px, -1px);
}

select {
  font: inherit;
  padding: 0.65rem 1rem;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: var(--surface);
  box-shadow: var(--shadow-inset-sm);
  color: var(--ink);
  outline: none;
  cursor: pointer;
}

select:focus {
  border-color: var(--p-accent);
}

.hint {
  font-size: 0.88rem;
  margin: 0;
  color: var(--ink-muted);
}

/* ==================== CHORES ==================== */
.chores {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.1rem;
}

.chores label {
  background: var(--surface);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-raised-sm);
  border-radius: var(--radius-md);
  padding: 1rem 1.2rem;
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 0.85rem;
  cursor: pointer;
  font-weight: 500;
  color: var(--ink);
  transition: all 0.25s ease;
}

.chores label:hover {
  box-shadow: var(--shadow-raised);
  transform: translateY(-2px);
}

.chores label:has(input:checked) {
  background: var(--surface-alt);
  box-shadow: var(--shadow-inset-sm);
  border-color: var(--p-accent);
  color: var(--p-accent);
}

.tally {
  margin-top: 1.8rem;
  display: inline-flex;
  gap: 1.4rem;
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-raised);
  border-radius: var(--radius-pill);
  padding: 0.75rem 1.6rem;
}

.tally span {
  font-weight: 600;
  color: var(--ink-secondary);
}

.tally strong {
  font-size: 1.8rem;
  font-weight: 700;
  background: var(--p-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ==================== PIPELINE & TABS ==================== */
.pipe,
.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  background: var(--surface-sunken);
  box-shadow: var(--shadow-inset-sm);
  padding: 0.45rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-subtle);
  margin-bottom: 1.4rem;
}

.pipe button,
.tabs button {
  font: 600 0.95rem 'Space Grotesk', sans-serif;
  background: transparent;
  border: none;
  border-radius: var(--radius-pill);
  padding: 0.55rem 1.2rem;
  cursor: pointer;
  color: var(--ink-secondary);
  transition: all 0.25s ease;
}

.pipe button:hover,
.tabs button:hover {
  color: var(--ink);
}

.pipe button[aria-selected=true],
.tabs button[aria-selected=true] {
  background: var(--surface);
  box-shadow: var(--shadow-raised-sm);
  color: var(--p-accent);
  font-weight: 700;
}

.detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.6rem;
}

.detail h3 {
  margin: 0 0 0.5rem;
}

.detail ul {
  margin: 0.4rem 0 0;
  padding-left: 1.2rem;
  color: var(--ink-secondary);
}

.badge {
  display: inline-flex;
  align-items: center;
  border-radius: var(--radius-pill);
  padding: 0.25rem 0.8rem;
  font-size: 0.82rem;
  font-weight: 700;
  background: var(--surface-alt);
  box-shadow: var(--shadow-inset-sm);
  color: var(--p-accent);
  border: 1px solid var(--border-subtle);
}

/* ==================== DETECTION BARS ==================== */
.bar {
  margin-bottom: 1.2rem;
}

.bar .top {
  display: flex;
  justify-content: space-between;
  font-weight: 600;
  margin-bottom: 0.4rem;
  font-size: 0.92rem;
}

.track {
  position: relative;
  height: 20px;
  background: var(--surface-sunken);
  box-shadow: var(--shadow-inset-sm);
  border-radius: var(--radius-pill);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
}

.fill {
  height: 100%;
  background: var(--p-gradient);
  border-radius: var(--radius-pill);
  box-shadow: var(--p-glow);
  transition: width 0.35s ease;
}

.fill.ok {
  background: linear-gradient(135deg, #34D399, #059669);
  box-shadow: 0 2px 10px var(--ok-glow);
}

.fill.pos {
  background: linear-gradient(135deg, #FBBF24, #D97706);
  box-shadow: 0 2px 10px var(--warn-glow);
}

.mark {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--ink-muted);
  opacity: 0.55;
  z-index: 2;
}

/* ==================== COMMANDS ==================== */
.cmd {
  display: flex;
  gap: 0.8rem;
  align-items: center;
  flex-wrap: wrap;
  margin: 0.9rem 0;
  padding: 0.6rem 0.8rem;
  background: var(--surface-alt);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-inset-sm);
}

.cmd code {
  font-size: 0.98rem;
  padding: 0.35rem 0.8rem;
  background: transparent;
  box-shadow: none;
  border: none;
}

.opts,
.grid3 {
  display: grid;
  gap: 1.2rem;
}

.opts {
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
}

.opts div,
.grid3 div {
  background: var(--surface);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-raised-sm);
  border-radius: var(--radius-lg);
  padding: 1.4rem;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.opts div:hover,
.grid3 div:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-raised);
}

.grid3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid3 b {
  display: block;
  font-size: 1.15rem;
  color: var(--ink);
  margin-bottom: 0.4rem;
}

.grid3 p,
.opts p {
  color: var(--ink-secondary);
  margin: 0.4rem 0 0;
}

/* ==================== FOOTER ==================== */
footer {
  margin-top: 5rem;
  padding: 0 1.2rem 2.5rem;
}

.footer-card {
  max-width: 1150px;
  margin: 0 auto;
  background: var(--surface);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-raised);
  border-radius: var(--radius-lg);
  padding: 2rem 2.5rem;
  text-align: center;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.2rem;
}

.footer-copy {
  margin: 1.5rem 0 0;
  color: var(--ink-secondary);
  font-size: 0.95rem;
}

/* Footer Author Section */
.footer-author {
  margin: 1.6rem 0 1.2rem;
  padding: 1.1rem 1.4rem;
  background: var(--surface-alt);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-raised-sm);
  border-radius: var(--radius-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.author-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 0.95rem;
  color: var(--ink);
}

.author-avatar-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--surface);
  box-shadow: var(--shadow-raised-sm);
  font-size: 1.05rem;
}

.author-text {
  font-weight: 500;
}

.author-text strong {
  color: var(--p-accent);
  font-weight: 700;
}

.author-socials {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.author-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--ink-secondary);
  background: var(--surface);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-raised-sm);
  border-radius: var(--radius-pill);
  padding: 0.4rem 0.85rem;
  transition: all 0.22s ease;
  text-decoration: none;
}

.author-link:hover {
  color: var(--p-accent);
  box-shadow: var(--shadow-raised);
  transform: translateY(-2px);
  border-color: var(--p-accent);
}

.author-link:active {
  box-shadow: var(--shadow-inset-sm);
  transform: translateY(1px);
}

/* ==================== TOAST ==================== */
#toast {
  position: fixed;
  bottom: 1.8rem;
  left: 50%;
  transform: translate(-50%, 150%);
  background: var(--surface);
  color: var(--ink);
  padding: 0.75rem 1.6rem;
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-raised-lg), var(--p-glow);
  border: 1px solid var(--border-soft);
  font-weight: 600;
  z-index: 1100;
  pointer-events: none;
  opacity: 0;
}

#toast.show {
  transform: translate(-50%, 0);
  opacity: 1;
}

/* ==================== AI CHATBOT WIDGET ==================== */

/* Nav button */
.btn-ai-nav {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.88rem;
  font-weight: 600;
  color: #fff;
  background: var(--p-gradient);
  box-shadow: var(--p-glow), var(--shadow-raised-sm);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--radius-pill);
  padding: 0.45rem 0.95rem;
  cursor: pointer;
  font-family: inherit;
  transition: all 0.25s ease;
}

.btn-ai-nav:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 10px 24px rgba(124, 58, 237, 0.4);
}

.btn-ai-nav:active {
  transform: translateY(1px);
}

.btn-ai-nav .ai-sparkle {
  color: #FBBF24;
  font-size: 1rem;
  display: inline-block;
  animation: pulseSparkle 2.2s infinite ease-in-out;
}

@keyframes pulseSparkle {

  0%,
  100% {
    transform: scale(1) rotate(0deg);
    opacity: 0.9;
  }

  50% {
    transform: scale(1.25) rotate(15deg);
    opacity: 1;
    filter: drop-shadow(0 0 4px #FBBF24);
  }
}

/* Floating Launcher Button */
.chatbot-toggle-btn {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 999;
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.65rem 1.15rem 0.65rem 0.85rem;
  border-radius: var(--radius-pill);
  background: var(--surface);
  color: var(--ink);
  border: 1px solid var(--border-soft);
  /* box-shadow: var(--shadow-raised-lg); */
  cursor: pointer;
  font-family: inherit;
  font-weight: 600;
  font-size: 0.92rem;
  transition: all 0.28s cubic-bezier(0.34, 1.56, 0.64, 1);
  user-select: none;
}

.chatbot-toggle-btn:hover {
  transform: translateY(-3px) scale(1.03);
  /* box-shadow: var(--shadow-raised-lg), var(--p-glow); */
  color: var(--p-accent);
}

.chatbot-toggle-btn:active {
  transform: translateY(1px) scale(0.98);
  box-shadow: var(--shadow-inset-sm);
}

.chatbot-toggle-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--p-gradient);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--p-glow);
  position: relative;
  flex-shrink: 0;
  transition: transform 0.3s ease;
}

.chatbot-toggle-btn.open .chatbot-toggle-icon {
  transform: rotate(90deg);
}

.chatbot-toggle-icon .icon-chat,
.chatbot-toggle-icon .icon-close {
  position: absolute;
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.chatbot-toggle-icon .icon-close {
  opacity: 0;
  transform: scale(0.6);
}

.chatbot-toggle-btn.open .chatbot-toggle-icon .icon-chat {
  opacity: 0;
  transform: scale(0.6);
}

.chatbot-toggle-btn.open .chatbot-toggle-icon .icon-close {
  opacity: 1;
  transform: scale(1);
}

.chatbot-toggle-label {
  letter-spacing: -0.01em;
}

.chatbot-toggle-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 0 2px var(--surface), 0 0 8px var(--ok-glow);
  animation: pulseDot 2s infinite ease-in-out;
}

@keyframes pulseDot {

  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }

  50% {
    opacity: 0.6;
    transform: scale(1.2);
  }
}

/* Chatbot Widget Container */
.chatbot-widget {
  position: fixed;
  bottom: 88px;
  right: 24px;
  z-index: 1000;
  width: 400px;
  max-width: calc(100vw - 32px);
  height: 590px;
  max-height: calc(100vh - 110px);
  background: var(--surface);
  border: 1px solid var(--border-soft);
  /* box-shadow: var(--shadow-raised-lg); */
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
  transform: translateY(20px) scale(0.95);
  transform-origin: bottom right;
  transition: opacity 0.28s ease, transform 0.28s cubic-bezier(0.34, 1.3, 0.64, 1);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.chatbot-widget.open {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0) scale(1);
}

/* Header */
.chatbot-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.85rem 1.1rem;
  background: var(--surface-alt);
  border-bottom: 1px solid var(--border-subtle);
  user-select: none;
}

.chatbot-brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
}

.chatbot-avatar {
  position: relative;
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: var(--surface);
  box-shadow: var(--shadow-raised-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4px;
}

.chatbot-avatar .logo-img {
  width: 28px;
  height: 28px;
  border-radius: 7px;
  box-shadow: none;
}

.chatbot-avatar .status-dot {
  position: absolute;
  bottom: -2px;
  right: -2px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--ok);
  border: 2px solid var(--surface-alt);
}

.chatbot-title-box {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}

.chatbot-title {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-weight: 700;
  font-size: 1rem;
  color: var(--ink);
}

.chatbot-badge {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.15rem 0.45rem;
  border-radius: var(--radius-pill);
  background: var(--p-gradient);
  color: #fff;
  box-shadow: var(--p-glow);
}

.chatbot-subtitle {
  font-size: 0.78rem;
  color: var(--ink-muted);
}

.chatbot-header-actions {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.chatbot-icon-btn {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--surface);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-raised-sm);
  color: var(--ink-secondary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
}

.chatbot-icon-btn:hover {
  color: var(--p-accent);
  box-shadow: var(--shadow-raised);
  transform: scale(1.05);
}

.chatbot-icon-btn:active {
  box-shadow: var(--shadow-inset-sm);
  transform: scale(0.95);
}

/* Messages Area */
.chatbot-messages {
  flex: 1;
  padding: 1rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  scroll-behavior: smooth;
}

.chatbot-messages::-webkit-scrollbar {
  width: 6px;
}

.chatbot-messages::-webkit-scrollbar-track {
  background: transparent;
}

.chatbot-messages::-webkit-scrollbar-thumb {
  background: var(--border-subtle);
  border-radius: var(--radius-pill);
}

/* Welcome Card */
.chatbot-welcome {
  background: var(--surface-alt);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-raised-sm);
  border-radius: var(--radius-md);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.chatbot-welcome h4 {
  margin: 0;
  font-size: 0.96rem;
  color: var(--ink);
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.chatbot-welcome p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--ink-secondary);
  line-height: 1.5;
}

/* Suggested chips */
.chatbot-chips-title {
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--ink-muted);
  margin-top: 0.35rem;
}

.chatbot-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.chatbot-chip {
  background: var(--surface);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-raised-sm);
  border-radius: var(--radius-pill);
  padding: 0.35rem 0.75rem;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--ink-secondary);
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: inherit;
  text-align: left;
}

.chatbot-chip:hover {
  color: var(--p-accent);
  box-shadow: var(--shadow-raised);
  transform: translateY(-1px);
  border-color: var(--p-accent);
}

.chatbot-chip:active {
  box-shadow: var(--shadow-inset-sm);
  transform: translateY(1px);
}

/* Message Bubbles */
.chat-row {
  display: flex;
  gap: 0.55rem;
  max-width: 90%;
  animation: fadeInMsg 0.25s ease-out forwards;
}

@keyframes fadeInMsg {
  from {
    opacity: 0;
    transform: translateY(6px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.chat-row.user {
  align-self: flex-end;
  flex-direction: row-reverse;
}

.chat-row.bot {
  align-self: flex-start;
}

.chat-avatar-mini {
  width: 26px;
  height: 26px;
  border-radius: 8px;
  background: var(--surface-alt);
  box-shadow: var(--shadow-raised-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2px;
  flex-shrink: 0;
  margin-top: 4px;
}

.chat-avatar-mini .logo-img {
  width: 20px;
  height: 20px;
  border-radius: 5px;
  box-shadow: none;
}

.chat-bubble {
  padding: 0.75rem 0.95rem;
  font-size: 0.88rem;
  line-height: 1.55;
  border-radius: 16px;
  word-break: break-word;
  position: relative;
}

.chat-row.user .chat-bubble {
  background: var(--p-gradient);
  color: #fff;
  border-bottom-right-radius: 4px;
  box-shadow: var(--p-glow);
}

.chat-row.bot .chat-bubble {
  background: var(--surface-alt);
  color: var(--ink);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-raised-sm);
  border-bottom-left-radius: 4px;
}

.chat-bubble a {
  color: var(--p-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
  word-break: break-all;
}

.chat-row.user .chat-bubble a {
  color: #fff;
  font-weight: 600;
}

.chat-bubble code {
  background: rgba(124, 58, 237, 0.1);
  color: var(--p-accent);
  padding: 0.15em 0.4em;
  border-radius: 6px;
  font-size: 0.88em;
  font-family: ui-monospace, Menlo, Consolas, monospace;
}

.chat-row.user .chat-bubble code {
  background: rgba(255, 255, 255, 0.25);
  color: #fff;
}

.chat-cmd-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  cursor: pointer;
  user-select: all;
  transition: all 0.2s ease;
}

.chat-cmd-pill:hover {
  background: var(--p-accent);
  color: #fff;
}

.chat-time {
  font-size: 0.68rem;
  color: var(--ink-muted);
  margin-top: 0.25rem;
  text-align: right;
}

.chat-row.user .chat-time {
  color: rgba(255, 255, 255, 0.75);
}

.chat-retry-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-top: 0.5rem;
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--bad);
  background: var(--surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-pill);
  padding: 0.25rem 0.65rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.chat-retry-btn:hover {
  background: var(--surface-sunken);
  transform: translateY(-1px);
}

/* Typing indicator */
.typing-dots {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 0.35rem 0.25rem;
}

.typing-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--p-accent);
  animation: typingBounce 1.4s infinite ease-in-out;
}

.typing-dot:nth-child(1) {
  animation-delay: 0s;
}

.typing-dot:nth-child(2) {
  animation-delay: 0.2s;
}

.typing-dot:nth-child(3) {
  animation-delay: 0.4s;
}

@keyframes typingBounce {

  0%,
  80%,
  100% {
    transform: translateY(0);
    opacity: 0.4;
  }

  40% {
    transform: translateY(-6px);
    opacity: 1;
  }
}

/* Input Area */
.chatbot-input-area {
  padding: 0.75rem 1rem 0.65rem 1rem;
  background: var(--surface-alt);
  border-top: 1px solid var(--border-subtle);
}

.chatbot-form {
  display: flex;
  align-items: flex-end;
  gap: 0.55rem;
  background: var(--surface);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-inset-sm);
  border-radius: 18px;
  padding: 0.35rem 0.45rem 0.35rem 0.85rem;
  transition: all 0.2s ease;
}

.chatbot-form:focus-within {
  border-color: var(--p-accent);
  box-shadow: var(--shadow-inset-sm), 0 0 0 2px rgba(124, 58, 237, 0.2);
}

.chatbot-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--ink);
  font-family: inherit;
  font-size: 0.88rem;
  line-height: 1.4;
  resize: none;
  max-height: 110px;
  padding: 0.35rem 0;
}

.chatbot-input::placeholder {
  color: var(--ink-muted);
}

.chatbot-send-btn {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: none;
  background: var(--p-gradient);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--p-glow);
  flex-shrink: 0;
  transition: all 0.2s ease;
}

.chatbot-send-btn:hover:not(:disabled) {
  transform: scale(1.08);
}

.chatbot-send-btn:active:not(:disabled) {
  transform: scale(0.94);
}

.chatbot-send-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  box-shadow: none;
}

.chatbot-footer-caption {
  font-size: 0.68rem;
  color: var(--ink-muted);
  text-align: center;
  margin-top: 0.4rem;
}

/* Mobile Responsiveness */
@media (max-width: 640px) {
  .chatbot-widget {
    bottom: 0;
    right: 0;
    left: 0;
    width: 100%;
    max-width: 100%;
    height: 85vh;
    max-height: 85vh;
    border-radius: 22px 22px 0 0;
    box-shadow: 0 -10px 30px rgba(0, 0, 0, 0.25);
  }

  .chatbot-toggle-btn {
    bottom: 16px;
    right: 16px;
    padding: 0.65rem 0.95rem 0.65rem 0.75rem;
  }

  .chatbot-toggle-label {
    display: none;
  }

  .btn-ai-nav span:not(.ai-sparkle) {
    display: none;
  }
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 860px) {

  .hero,
  .sim,
  .detail {
    grid-template-columns: 1fr;
  }

  .nav-inner {
    border-radius: var(--radius-lg);
    flex-wrap: wrap;
  }

  .nav-links {
    order: 3;
    width: 100%;
    justify-content: center;
    padding-top: 0.4rem;
  }

  .footer-top {
    justify-content: center;
    text-align: center;
  }

  .footer-author {
    flex-direction: column;
    text-align: center;
    justify-content: center;
  }

  .author-socials {
    justify-content: center;
  }
}

@media (prefers-reduced-motion: reduce) {

  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
    scroll-behavior: auto !important;
  }
}