/* ==========================================================
   NEXUS · Comment-to-DM AI
   Tema escuro futurista · WebGL atrás · GSAP nas transições
   ========================================================== */

:root {
  --bg: #07080d;
  --bg-soft: #0d0f18;
  --panel: rgba(18, 20, 32, 0.55);
  --panel-strong: rgba(22, 24, 38, 0.85);
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);
  --text: #e9ecf5;
  --muted: #8b90a8;
  --muted-2: #5d6178;
  --primary: #a78bfa;
  --cyan: #22d3ee;
  --pink: #f472b6;
  --green: #34d399;
  --red: #f87171;
  --gradient: linear-gradient(135deg, #a78bfa 0%, #22d3ee 50%, #f472b6 100%);
  --shadow-glow: 0 0 60px rgba(167, 139, 250, 0.15);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html,
body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family:
    "Space Grotesk",
    -apple-system,
    "Segoe UI",
    Roboto,
    sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
button,
input,
textarea,
select {
  font-family: inherit;
  color: inherit;
}
code,
.mono {
  font-family: "JetBrains Mono", monospace;
}

/* ---------- WebGL canvas ---------- */
#webgl {
  position: fixed;
  inset: 0;
  z-index: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
}
.grain {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.05;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence baseFrequency='0.9' /></filter><rect width='100%25' height='100%25' filter='url(%23n)' opacity='0.7'/></svg>");
}

/* ---------- Loader ---------- */
#loader {
  position: fixed;
  inset: 0;
  z-index: 99;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  gap: 24px;
  transition: opacity 0.6s ease;
}
.loader-ring {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  border: 2px solid transparent;
  border-top-color: var(--primary);
  border-right-color: var(--cyan);
  animation: spin 0.9s linear infinite;
}
.loader-text {
  font-weight: 700;
  letter-spacing: 8px;
  font-size: 14px;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ---------- Topbar ---------- */
.topbar {
  position: relative;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 36px;
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  background: rgba(7, 8, 13, 0.55);
  border-bottom: 1px solid var(--border);
}
.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}
.logo-glow {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-glow);
}
.brand-text h1 {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 2px;
}
.brand-text span {
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 1px;
  text-transform: uppercase;
}

.nav {
  display: flex;
  gap: 4px;
  padding: 4px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: 999px;
}
.nav-btn {
  position: relative;
  padding: 8px 16px;
  border: none;
  background: transparent;
  color: var(--muted);
  font-weight: 500;
  font-size: 13px;
  border-radius: 999px;
  cursor: pointer;
  transition:
    color 0.25s,
    background 0.25s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.nav-btn:hover {
  color: var(--text);
}
.nav-btn.active {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
}
.nav-btn .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 8px var(--green);
}
.nav-btn:not(.active) .dot {
  display: none;
}

.actions {
  display: flex;
  gap: 12px;
  align-items: center;
}
.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  border-radius: 999px;
  background: rgba(52, 211, 153, 0.1);
  color: var(--green);
  border: 1px solid rgba(52, 211, 153, 0.25);
}
.pulse {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  position: relative;
}
.pulse::after {
  content: "";
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.4;
  animation: pulse 1.6s ease-out infinite;
}
@keyframes pulse {
  0% {
    transform: scale(0.6);
    opacity: 0.6;
  }
  100% {
    transform: scale(2.2);
    opacity: 0;
  }
}

/* ---------- Buttons (Uiverse-inspired) ---------- */
.btn {
  position: relative;
  isolation: isolate;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  padding: 10px 22px;
  font-size: 13px;
  font-weight: 600;
  border-radius: 12px;
  cursor: pointer;
  letter-spacing: 0.4px;
  text-transform: lowercase;
  overflow: hidden;
  transition:
    transform 0.25s cubic-bezier(0.2, 0.8, 0.2, 1),
    box-shadow 0.3s,
    border-color 0.25s,
    color 0.25s;
}
.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    120deg,
    transparent 0%,
    rgba(255, 255, 255, 0.18) 50%,
    transparent 100%
  );
  transform: translateX(-120%);
  transition: transform 0.65s cubic-bezier(0.2, 0.8, 0.2, 1);
  z-index: -1;
}
.btn:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.35);
}
.btn:hover::before {
  transform: translateX(120%);
}
.btn:active {
  transform: translateY(0) scale(0.98);
}

/* Primary — gradient + animated conic ring on hover */
.btn-primary {
  border: none;
  color: #0a0b14;
  background: var(--gradient);
  box-shadow:
    0 8px 24px rgba(167, 139, 250, 0.28),
    inset 0 1px 0 rgba(255, 255, 255, 0.4);
}
.btn-primary::after {
  content: "";
  position: absolute;
  inset: -2px;
  border-radius: inherit;
  padding: 2px;
  background: conic-gradient(from 0deg, #a78bfa, #22d3ee, #f472b6, #a78bfa);
  -webkit-mask:
    linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.3s;
  animation: spin-conic 4s linear infinite;
  z-index: -1;
}
.btn-primary:hover {
  filter: brightness(1.08) saturate(1.1);
  box-shadow:
    0 16px 40px rgba(167, 139, 250, 0.45),
    inset 0 1px 0 rgba(255, 255, 255, 0.5);
}
.btn-primary:hover::after {
  opacity: 1;
}
@keyframes spin-conic {
  to {
    transform: rotate(360deg);
  }
}

/* Ghost — animated gradient border (Uiverse style) */
.btn-ghost {
  background: rgba(34, 211, 238, 0.04);
  color: var(--cyan);
  border-color: transparent;
  position: relative;
}
.btn-ghost::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(
    135deg,
    rgba(34, 211, 238, 0.5),
    rgba(167, 139, 250, 0.4),
    rgba(244, 114, 182, 0.4)
  );
  background-size: 200% 200%;
  -webkit-mask:
    linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  z-index: -1;
  transition: background-position 0.6s ease;
}
.btn-ghost:hover {
  color: #fff;
  background: rgba(34, 211, 238, 0.1);
}
.btn-ghost:hover::after {
  background-position: 100% 100%;
}

/* Danger */
.btn-danger {
  color: var(--red);
  border-color: rgba(248, 113, 113, 0.35);
  background: rgba(248, 113, 113, 0.06);
}
.btn-danger:hover {
  color: #fff;
  background: rgba(248, 113, 113, 0.18);
  border-color: rgba(248, 113, 113, 0.6);
  box-shadow: 0 12px 28px rgba(248, 113, 113, 0.25);
}

.icon-btn {
  width: 34px;
  height: 34px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
  border-radius: 10px;
  color: var(--muted);
  cursor: pointer;
  font-size: 18px;
  display: grid;
  place-items: center;
  transition: all 0.25s;
}
.icon-btn:hover {
  color: var(--text);
  border-color: var(--border-strong);
  background: rgba(255, 255, 255, 0.07);
  transform: rotate(90deg);
}

/* ---------- Main ---------- */
#app {
  position: relative;
  z-index: 5;
  max-width: 1280px;
  margin: 0 auto;
  padding: 48px 36px 120px;
}
.view {
  display: none;
  animation: viewIn 0.5s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.view.active {
  display: block;
}
@keyframes viewIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.view-title {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 8px;
}
.view-sub {
  color: var(--muted);
  margin-bottom: 32px;
  max-width: 640px;
  line-height: 1.6;
}

/* ---------- Hero ---------- */
.hero {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 64px;
}
.kicker {
  display: inline-block;
  padding: 6px 12px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--cyan);
  border: 1px solid rgba(34, 211, 238, 0.25);
  background: rgba(34, 211, 238, 0.06);
  border-radius: 999px;
  margin-bottom: 20px;
}
.hero-title {
  font-size: clamp(36px, 5vw, 64px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -1.5px;
  margin-bottom: 20px;
}
.gradient {
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.outline {
  -webkit-text-stroke: 1.5px var(--text);
  color: transparent;
}
.hero-sub {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.7;
  max-width: 540px;
}
.hero-right {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  position: relative;
}
#hero-3d {
  grid-column: 1 / -1;
  height: 360px;
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  background:
    radial-gradient(
      ellipse at 30% 40%,
      rgba(167, 139, 250, 0.18),
      transparent 60%
    ),
    radial-gradient(
      ellipse at 70% 70%,
      rgba(34, 211, 238, 0.14),
      transparent 60%
    ),
    radial-gradient(
      ellipse at 50% 100%,
      rgba(244, 114, 182, 0.1),
      transparent 60%
    ),
    rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border);
  backdrop-filter: blur(8px);
  margin-bottom: 4px;
}
#hero-3d canvas {
  display: block;
  width: 100% !important;
  height: 100% !important;
}
.stat {
  padding: 24px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  backdrop-filter: blur(12px);
  transition: all 0.3s;
}
.stat:hover {
  border-color: var(--border-strong);
  transform: translateY(-3px);
}
.stat:nth-child(2n) {
  margin-top: 20px;
}
.stat .num {
  font-size: 36px;
  font-weight: 700;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-family: "JetBrains Mono", monospace;
}
.stat .lbl {
  font-size: 11px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-top: 4px;
}

/* ---------- Flow ---------- */
.flow-wrap {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}
.flow-trigger {
  width: 100%;
  max-width: 560px;
  padding: 20px 24px;
  background: linear-gradient(
    135deg,
    rgba(167, 139, 250, 0.12),
    rgba(34, 211, 238, 0.06)
  );
  border: 1px solid rgba(167, 139, 250, 0.3);
  border-radius: 18px;
  display: flex;
  align-items: center;
  gap: 16px;
  backdrop-filter: blur(12px);
}
.trigger-tag {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--primary);
  padding: 4px 10px;
  background: rgba(167, 139, 250, 0.15);
  border-radius: 6px;
}
.trigger-body {
  display: flex;
  align-items: center;
  gap: 10px;
}
.trigger-label {
  color: var(--muted);
  font-size: 14px;
}
#trigger-keyword {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  padding: 4px 10px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 6px;
  border: 1px solid var(--border);
}
.flow-pipe {
  width: 2px;
  height: 36px;
  background: linear-gradient(180deg, transparent, var(--primary), transparent);
}
.nodes {
  display: flex;
  flex-direction: column;
  gap: 36px;
  width: 100%;
  align-items: center;
  position: relative;
}
.nodes::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1px;
  background: linear-gradient(
    180deg,
    transparent 0%,
    var(--border-strong) 5%,
    var(--border-strong) 95%,
    transparent 100%
  );
  transform: translateX(-50%);
  z-index: 0;
}
.node {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 560px;
  padding: 22px 24px;
  background: var(--panel-strong);
  border: 1px solid var(--border);
  border-radius: 18px;
  backdrop-filter: blur(20px);
  cursor: pointer;
  transition: all 0.35s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.node:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}
.node.active {
  border-color: var(--primary);
  box-shadow:
    0 0 0 1px var(--primary),
    0 0 60px rgba(167, 139, 250, 0.25);
}
.node-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}
.node-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  padding: 4px 10px;
  border-radius: 6px;
}
.badge-comment {
  background: rgba(167, 139, 250, 0.15);
  color: var(--primary);
}
.badge-ask {
  background: rgba(34, 211, 238, 0.15);
  color: var(--cyan);
}
.badge-link {
  background: rgba(244, 114, 182, 0.15);
  color: var(--pink);
}
.badge-confirm {
  background: rgba(52, 211, 153, 0.15);
  color: var(--green);
}
.badge-text {
  background: rgba(255, 255, 255, 0.08);
  color: var(--muted);
}
.node-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--muted);
}
.node-msg {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text);
  margin-bottom: 8px;
}
.node-meta {
  display: flex;
  gap: 12px;
  font-size: 11px;
  color: var(--muted-2);
  text-transform: uppercase;
  letter-spacing: 1px;
}
.node-meta .ai-on {
  color: var(--cyan);
}

.add-node {
  margin-top: 36px;
  padding: 14px 28px;
  background: transparent;
  border: 1px dashed var(--border-strong);
  color: var(--muted);
  border-radius: 12px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  transition: all 0.25s;
}
.add-node:hover {
  border-color: var(--primary);
  color: var(--text);
  background: rgba(167, 139, 250, 0.05);
}

/* ---------- Negotiator cards ---------- */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
  margin-bottom: 48px;
}
.tech-card {
  position: relative;
  padding: 28px 24px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 18px;
  backdrop-filter: blur(12px);
  overflow: hidden;
  transition: all 0.35s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.tech-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    circle at top right,
    rgba(167, 139, 250, 0.12),
    transparent 60%
  );
  opacity: 0;
  transition: opacity 0.35s;
}
.tech-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-strong);
}
.tech-card:hover::before {
  opacity: 1;
}
.tech-num {
  display: inline-block;
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  color: var(--cyan);
  margin-bottom: 12px;
  letter-spacing: 2px;
}
.tech-card h3 {
  font-size: 18px;
  margin-bottom: 8px;
  font-weight: 600;
}
.tech-card p {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.6;
}

.trigger-list h4 {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--muted);
  margin-bottom: 14px;
}
.pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.pills span {
  padding: 6px 12px;
  background: rgba(244, 114, 182, 0.1);
  border: 1px solid rgba(244, 114, 182, 0.25);
  color: var(--pink);
  border-radius: 999px;
  font-size: 12px;
  font-family: "JetBrains Mono", monospace;
}

/* ---------- Forms ---------- */
.form-grid {
  display: grid;
  gap: 20px;
  max-width: 800px;
}
.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.field > span {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--muted);
  font-weight: 600;
}
.field input,
.field textarea {
  width: 100%;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 14px;
  font-size: 14px;
  color: var(--text);
  outline: none;
  transition:
    border-color 0.25s,
    background 0.25s;
  resize: vertical;
  font-family: inherit;
}
.field textarea {
  font-family: "JetBrains Mono", monospace;
  font-size: 13px;
  line-height: 1.6;
}
.field input:focus,
.field textarea:focus {
  border-color: var(--primary);
  background: rgba(167, 139, 250, 0.04);
}
.check {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--muted);
  cursor: pointer;
}
.check input {
  accent-color: var(--primary);
  width: 18px;
  height: 18px;
}

/* ---------- Sessions table ---------- */
.table-wrap {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  backdrop-filter: blur(12px);
}
table {
  width: 100%;
  border-collapse: collapse;
}
th,
td {
  text-align: left;
  padding: 14px 18px;
  font-size: 13px;
}
th {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--muted);
  font-weight: 600;
  border-bottom: 1px solid var(--border);
}
tbody tr {
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}
tbody tr:last-child {
  border-bottom: none;
}
.empty {
  text-align: center;
  color: var(--muted-2);
  padding: 36px;
}

/* ---------- Chat / Simulator ---------- */
.chat-shell {
  max-width: 640px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 22px;
  overflow: hidden;
  backdrop-filter: blur(20px);
}
.chat-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.2);
}
.avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--gradient);
  flex-shrink: 0;
}
.chat-header strong {
  display: block;
  font-size: 14px;
}
.chat-mode {
  display: inline-block;
  margin-top: 2px;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--muted);
  padding: 2px 8px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 999px;
}
.chat-mode.negotiator {
  color: var(--pink);
  background: rgba(244, 114, 182, 0.12);
}
.chat-log {
  height: 420px;
  overflow-y: auto;
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.bubble {
  max-width: 78%;
  padding: 12px 16px;
  border-radius: 18px;
  font-size: 14px;
  line-height: 1.5;
  word-wrap: break-word;
  animation: bubbleIn 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
}
@keyframes bubbleIn {
  from {
    opacity: 0;
    transform: translateY(8px) scale(0.96);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}
.bubble.user {
  align-self: flex-end;
  background: rgba(255, 255, 255, 0.08);
  border-bottom-right-radius: 4px;
}
.bubble.bot {
  align-self: flex-start;
  background: var(--gradient);
  color: #0a0b14;
  border-bottom-left-radius: 4px;
  font-weight: 500;
}
.bubble.typing {
  background: rgba(255, 255, 255, 0.06);
  color: var(--muted);
  font-style: italic;
}
.chat-form {
  display: flex;
  gap: 8px;
  padding: 14px;
  border-top: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.2);
}
.chat-form input {
  flex: 1;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 14px;
  font-size: 14px;
  color: var(--text);
  outline: none;
}
.chat-form input:focus {
  border-color: var(--primary);
}

/* ---------- Editor (slide-over) ---------- */
.editor {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 440px;
  max-width: 100vw;
  background: rgba(13, 15, 24, 0.95);
  border-left: 1px solid var(--border);
  backdrop-filter: blur(24px);
  z-index: 50;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.editor:not(.hidden) {
  transform: translateX(0);
}
.editor-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 24px;
  border-bottom: 1px solid var(--border);
}
.editor-head h3 {
  font-size: 16px;
  font-weight: 600;
}
.editor-body {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.editor-actions {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}
.preview-out {
  margin-top: 12px;
  padding: 14px;
  background: rgba(34, 211, 238, 0.06);
  border: 1px solid rgba(34, 211, 238, 0.2);
  border-radius: 12px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--text);
  font-style: italic;
}
.hidden {
  display: none !important;
}

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%) translateY(120%);
  background: var(--panel-strong);
  border: 1px solid var(--border-strong);
  backdrop-filter: blur(20px);
  padding: 12px 22px;
  border-radius: 12px;
  font-size: 13px;
  font-weight: 500;
  z-index: 100;
  transition: transform 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.toast.show {
  transform: translateX(-50%) translateY(0);
}
.toast.error {
  border-color: rgba(248, 113, 113, 0.4);
  color: var(--red);
}

/* ---------- Responsive ---------- */
@media (max-width: 920px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .topbar {
    flex-wrap: wrap;
    gap: 12px;
    padding: 14px 18px;
  }
  .nav {
    order: 3;
    width: 100%;
    overflow-x: auto;
    justify-content: flex-start;
  }
  #app {
    padding: 32px 18px 80px;
  }
  .editor {
    width: 100%;
  }
}