:root {
  --bg-deep: #0a0e1a;
  --bg-surface: #111728;
  --bg-elevated: #161d33;
  --bg-elevated-2: #1a2342;
  --accent: #4f7df5;
  --accent-2: #22d3a7;
  --accent-glow: rgba(79, 125, 245, 0.35);
  --text-primary: #e8ecf4;
  --text-secondary: #8a93ad;
  --text-dim: #5b6480;
  --border: rgba(140, 160, 220, 0.10);
  --border-strong: rgba(140, 160, 220, 0.18);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --shadow-lg: 0 24px 60px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 0 1px rgba(79,125,245,0.35), 0 8px 28px rgba(79,125,245,0.25);
  --danger: #f56e6e;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, sans-serif;
  background: radial-gradient(1200px 600px at 90% -10%, rgba(34,211,167,0.10), transparent 60%),
              radial-gradient(900px 500px at -10% 20%, rgba(79,125,245,0.12), transparent 60%),
              var(--bg-deep);
  color: var(--text-primary);
  min-height: 100vh;
  padding: 48px 20px;
}

.esc-container {
  max-width: 1100px; margin: 0 auto;
  display: flex; flex-direction: column; gap: 24px;
}

/* Header */
.esc-header {
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  padding: 24px 28px;
  background: linear-gradient(180deg, var(--bg-surface), var(--bg-elevated));
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  flex-wrap: wrap;
}
.eh-left { display: flex; align-items: center; gap: 16px; }
.eh-icon {
  width: 44px; height: 44px; display: grid; place-items: center;
  background: rgba(79,125,245,0.12);
  color: var(--accent);
  border: 1px solid rgba(79,125,245,0.25);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-glow);
}
.esc-header h2 { margin: 0; font-size: 22px; letter-spacing: -0.01em; }
.esc-header p { margin: 4px 0 0; color: var(--text-secondary); font-size: 13px; }
.eh-badge {
  font-size: 12px; padding: 6px 12px;
  border-radius: 999px;
  background: rgba(34,211,167,0.10); color: var(--accent-2);
  border: 1px solid rgba(34,211,167,0.25);
}

/* Block */
.esc-block {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  box-shadow: var(--shadow-lg);
}
.esc-block h3 {
  margin: 0 0 6px;
  font-size: 16px; font-weight: 600;
  display: inline-flex; align-items: center; gap: 10px;
}
.esc-block h3 .num {
  font-size: 11px; color: var(--text-dim);
  background: var(--bg-elevated-2);
  padding: 3px 8px; border-radius: 6px;
  border: 1px solid var(--border-strong);
  font-weight: 500;
}
.block-desc {
  margin: 0 0 18px; color: var(--text-secondary); font-size: 13px;
}

/* Chips */
.chip-row { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 14px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-strong);
  color: var(--text-secondary);
  border-radius: 999px;
  font-size: 13px; font-weight: 500;
  cursor: pointer;
  transition: all .2s;
}
.chip:hover { color: var(--text-primary); border-color: var(--accent); }
.chip.active {
  background: rgba(79,125,245,0.15);
  color: var(--text-primary);
  border-color: var(--accent);
  box-shadow: var(--shadow-glow);
}
.chip-icon { font-size: 14px; }

/* Levels (timeline) */
.levels {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  position: relative;
}
.level {
  display: flex; gap: 14px; align-items: flex-start;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px;
  cursor: pointer;
  transition: all .25s;
  position: relative;
  overflow: hidden;
}
.level::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0;
  width: 3px; background: var(--accent);
  transform: scaleY(0); transform-origin: top;
  transition: transform .3s;
}
.level:hover, .level.active {
  border-color: var(--accent);
  background: var(--bg-elevated-2);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}
.level:hover::before, .level.active::before { transform: scaleY(1); }
.level.critical { border-color: rgba(245,110,110,0.30); }
.level.critical::before { background: var(--danger); }
.level.critical:hover, .level.critical.active {
  border-color: var(--danger);
  box-shadow: 0 0 0 1px rgba(245,110,110,0.35), 0 8px 28px rgba(245,110,110,0.20);
}
.lvl-circle {
  width: 36px; height: 36px; border-radius: 50%;
  display: grid; place-items: center;
  background: var(--bg-elevated-2);
  border: 1px solid var(--border-strong);
  color: var(--accent); font-weight: 600; font-size: 14px;
  flex-shrink: 0;
}
.level.critical .lvl-circle { color: var(--danger); border-color: rgba(245,110,110,0.30); }
.lvl-body { display: flex; flex-direction: column; gap: 2px; }
.lvl { font-size: 14px; font-weight: 600; color: var(--text-primary); }
.desc { font-size: 12px; color: var(--text-secondary); }
.lvl-eta {
  font-size: 11px; color: var(--text-dim);
  margin-top: 6px;
  padding: 3px 8px; border-radius: 6px;
  background: rgba(255,255,255,0.04);
  align-self: flex-start;
}

/* Form */
.esc-form { display: flex; flex-direction: column; gap: 18px; }
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.field { display: flex; flex-direction: column; gap: 6px; }
.field.full { grid-column: 1 / -1; }
.field label { font-size: 12px; color: var(--text-secondary); font-weight: 500; }
.field input, .field select, .field textarea {
  background: var(--bg-elevated);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  color: var(--text-primary);
  font-size: 14px;
  font-family: inherit;
  outline: none;
  transition: all .2s;
}
.field input::placeholder, .field textarea::placeholder { color: var(--text-dim); }
.field input:focus, .field select:focus, .field textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(79,125,245,0.18);
  background: var(--bg-elevated-2);
}
.field select {
  appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'><path fill='none' stroke='%238a93ad' stroke-width='2' d='M1 1l5 5 5-5'/></svg>");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}
.field textarea { resize: vertical; min-height: 110px; }
.field.invalid input, .field.invalid select, .field.invalid textarea {
  border-color: var(--danger);
  box-shadow: 0 0 0 3px rgba(245,110,110,0.15);
}
.err { color: var(--danger); font-size: 11px; min-height: 14px; }
.textarea-meta { display: flex; justify-content: space-between; }
.char-count { font-size: 11px; color: var(--text-dim); }

/* File drop */
.file-drop {
  border: 1.5px dashed var(--border-strong);
  border-radius: var(--radius-md);
  background: var(--bg-elevated);
  padding: 18px;
  transition: all .2s;
  text-align: center;
}
.file-drop.drag {
  border-color: var(--accent);
  background: rgba(79,125,245,0.06);
}
.fd-content {
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  color: var(--text-secondary); font-size: 13px;
}
.fd-content svg { color: var(--accent); }
.fd-content small { color: var(--text-dim); font-size: 11px; }
.link {
  background: none; border: 0; padding: 0;
  color: var(--accent); cursor: pointer;
  font: inherit; text-decoration: underline;
}
.file-list {
  list-style: none; margin: 12px 0 0; padding: 0;
  display: flex; flex-direction: column; gap: 6px;
}
.file-list li {
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 12px;
  background: var(--bg-elevated-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 12px;
}
.file-list .rm {
  background: none; border: 0; color: var(--text-dim);
  cursor: pointer; font-size: 16px; line-height: 1;
}
.file-list .rm:hover { color: var(--danger); }

/* Actions */
.form-actions {
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
  flex-wrap: wrap;
}
.form-status { font-size: 12px; color: var(--text-dim); }
.submit-btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 22px;
  background: linear-gradient(135deg, var(--accent), #6a91ff);
  color: white;
  border: 0; border-radius: var(--radius-sm);
  font-size: 14px; font-weight: 600;
  cursor: pointer;
  box-shadow: var(--shadow-glow);
  transition: transform .15s, box-shadow .2s, opacity .2s;
}
.submit-btn:hover { transform: translateY(-1px); }
.submit-btn:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }
.submit-btn .btn-arrow { transition: transform .2s; }
.submit-btn:hover .btn-arrow { transform: translateX(3px); }
.submit-btn.loading .btn-label::after {
  content: "..."; display: inline-block; width: 14px; text-align: left;
  animation: dots 1.2s steps(4, end) infinite;
}
@keyframes dots { 0%{content:"";} 25%{content:".";} 50%{content:"..";} 75%{content:"...";} }

/* Response cards */
.response-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin: 6px 0 14px;
}
.resp-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  display: flex; flex-direction: column; gap: 4px;
  transition: all .2s;
}
.resp-card:hover { border-color: var(--accent); transform: translateY(-2px); box-shadow: var(--shadow-glow); }
.resp-icon { font-size: 18px; }
.resp-card strong { font-size: 13px; }
.resp-card span:last-child { color: var(--text-secondary); font-size: 12px; }
.note { color: var(--text-dim); font-size: 12px; margin: 0; }

/* Toast */
.toast {
  position: fixed; bottom: 24px; right: 24px;
  display: flex; align-items: center; gap: 10px;
  padding: 12px 18px;
  background: var(--bg-elevated-2);
  border: 1px solid rgba(34,211,167,0.30);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  color: var(--text-primary);
  font-size: 13px;
  opacity: 0; transform: translateY(20px); pointer-events: none;
  transition: all .3s;
  z-index: 100;
}
.toast.show { opacity: 1; transform: translateY(0); }
.toast-icon {
  width: 22px; height: 22px; border-radius: 50%;
  background: var(--accent-2); color: var(--bg-deep);
  display: grid; place-items: center; font-weight: 700; font-size: 13px;
}

@media (max-width: 640px) {
  body { padding: 24px 12px; }
  .esc-block, .esc-header { padding: 18px; }
  .form-grid { grid-template-columns: 1fr; }
  .submit-btn { width: 100%; justify-content: center; }
}