/* EdisonRL Grid Builder — Copyright (C) Shreyan Mitra, 2024-2026. */

:root {
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-light: #dbeafe;
  --accent: #f59e0b;
  --accent-dark: #d97706;
  --success: #10b981;
  --success-light: #d1fae5;
  --danger: #ef4444;
  --danger-hover: #dc2626;
  --danger-light: #fee2e2;
  --bg: #f0f4fa;
  --card: #ffffff;
  --border: #e2e8f0;
  --text: #1e293b;
  --muted: #64748b;
  --light: #94a3b8;
  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.08), 0 4px 8px rgba(0, 0, 0, 0.04);
}

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

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  background: var(--bg);
  background-image:
    radial-gradient(circle at 1px 1px, #d6dff0 0.8px, transparent 0);
  background-size: 24px 24px;
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
}

/* ── Header ── */

header {
  background: linear-gradient(135deg, #0f2848 0%, #1a4fa0 50%, #2563eb 100%);
  color: #fff;
  padding: 24px 24px 22px;
  box-shadow: 0 4px 20px rgba(15, 40, 72, 0.25);
  position: relative;
  overflow: hidden;
}

header::after {
  content: "";
  position: absolute;
  top: -40%;
  right: -10%;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.04);
  pointer-events: none;
}

.header-inner {
  max-width: 960px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.logo {
  display: flex;
  align-items: center;
  gap: 16px;
}

.logo-img {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  object-fit: contain;
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.logo h1 {
  margin: 0;
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.4px;
}

.logo p {
  margin: 3px 0 0;
  font-size: 13px;
  opacity: 0.8;
  font-weight: 400;
}

/* ── Layout ── */

main {
  max-width: 960px;
  margin: 0 auto;
  padding: 24px 16px 48px;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

/* ── Cards ── */

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: box-shadow 0.2s ease;
}

.card:hover {
  box-shadow: var(--shadow-lg);
}

.card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%);
}

.card-header h2 {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.2px;
}

.card-header .step-desc {
  margin-left: auto;
  font-size: 12px;
  color: var(--light);
  font-weight: 400;
}

.step-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 10px;
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: #fff;
  font-size: 15px;
  font-weight: 800;
  flex-shrink: 0;
  box-shadow: 0 2px 6px rgba(37, 99, 235, 0.35);
}

/* ── Inline SVG icon helpers ── */

svg[aria-hidden] {
  vertical-align: -0.15em;
  flex-shrink: 0;
}

.btn svg[aria-hidden] {
  font-size: 1em;
}

.step-badge svg[aria-hidden] {
  font-size: 15px;
}

.card-header .step-desc svg[aria-hidden] {
  font-size: 12px;
  opacity: 0.7;
  margin-right: 2px;
}

.action-group h3 svg[aria-hidden] {
  font-size: 13px;
  opacity: 0.7;
  margin-right: 3px;
}

.control-group > label svg[aria-hidden] {
  font-size: 11px;
  opacity: 0.65;
}

.card-body > label svg[aria-hidden] {
  font-size: 12px;
  opacity: 0.65;
  margin-right: 2px;
}

details summary svg[aria-hidden] {
  font-size: 13px;
  opacity: 0.65;
  margin-right: 3px;
}

footer svg[aria-hidden] {
  font-size: 11px;
  opacity: 0.7;
}

.card-body {
  padding: 20px;
}

/* ── Buttons ── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 16px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
  line-height: 1.4;
  font-family: inherit;
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: #fff;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #1d4ed8, #1e40af);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.4);
}

.btn-accent {
  background: linear-gradient(135deg, #f59e0b, #d97706);
  color: #fff;
  box-shadow: 0 2px 6px rgba(245, 158, 11, 0.3);
}

.btn-accent:hover {
  background: linear-gradient(135deg, #d97706, #b45309);
}

.btn-secondary {
  background: #fff;
  color: var(--text);
  border-color: var(--border);
  box-shadow: var(--shadow);
}

.btn-secondary:hover {
  background: #f8fafc;
  border-color: #cbd5e1;
  box-shadow: var(--shadow-md);
}

.btn-danger {
  background: #fff;
  color: var(--danger);
  border-color: var(--danger);
}

.btn-danger:hover {
  background: var(--danger-light);
}

.btn-sm {
  padding: 5px 12px;
  font-size: 12px;
}

.btn-lg {
  padding: 12px 32px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.2px;
}

.file-btn {
  cursor: pointer;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* ── Table ── */

.types-scroll {
  overflow-x: auto;
  margin-bottom: 12px;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

th {
  text-align: left;
  padding: 8px 10px;
  font-weight: 600;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--muted);
  border-bottom: 2px solid var(--border);
  white-space: nowrap;
}

td {
  padding: 6px 10px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

tr:hover td {
  background: #f8fafc;
}

td input,
td select {
  width: 100%;
  min-width: 50px;
}

td input[type="number"] {
  width: 68px;
  min-width: 68px;
}

td input[type="checkbox"] {
  width: auto;
  min-width: auto;
  accent-color: var(--primary);
  cursor: pointer;
}

td input[type="color"] {
  width: 36px;
  min-width: 36px;
  height: 28px;
  padding: 2px;
  border-radius: 6px;
  cursor: pointer;
  border: 2px solid var(--border);
}

td input[type="color"]:hover {
  border-color: var(--primary);
}

td .del {
  background: none;
  border: 1px solid #e2e8f0;
  color: var(--light);
  border-radius: 6px;
  padding: 4px 7px;
  cursor: pointer;
  font-size: 14px;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.12s;
}

td .del:hover {
  background: var(--danger-light);
  border-color: var(--danger);
  color: var(--danger);
}

/* ── Forms ── */

input,
select {
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: 7px;
  font-size: 13px;
  color: var(--text);
  background: #fff;
  font-family: inherit;
  transition: border-color 0.15s, box-shadow 0.15s;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

/* ── Scenario Controls ── */

.scenario-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 16px;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.scenario-selector {
  display: flex;
  gap: 6px;
  align-items: center;
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.control-group > label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  color: var(--muted);
}

.control-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  width: 100%;
}

.control-row input,
.control-row select {
  width: 80px;
}

/* ── Grid Editor ── */

.grid-editor {
  display: flex;
  gap: 24px;
  align-items: flex-start;
}

.paint-palette {
  flex-shrink: 0;
  min-width: 130px;
}

.paint-palette > label {
  display: block;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--muted);
  margin-bottom: 8px;
}

.swatches {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.swatch {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 10px;
  border: 2px solid transparent;
  border-radius: 8px;
  cursor: pointer;
  font-size: 12px;
  transition: all 0.15s;
  background: #fff;
}

.swatch:hover {
  background: #f1f5f9;
  border-color: #cbd5e1;
}

.swatch.active {
  border-color: var(--primary);
  background: var(--primary-light);
  font-weight: 700;
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.15);
}

.swatch-color {
  width: 22px;
  height: 22px;
  border-radius: 5px;
  border: 1px solid rgba(0, 0, 0, 0.12);
  flex-shrink: 0;
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.06);
}

.swatch-label {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ── Grid ── */

.grid-area {
  flex: 1;
  overflow: auto;
  background: #f8fafc;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.04);
}

.grid {
  display: inline-grid;
  gap: 3px;
  background: #94a3b8;
  border: 2px solid #64748b;
  border-radius: 8px;
  padding: 3px;
}

.cell {
  width: 52px;
  height: 52px;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 10px;
  font-weight: 700;
  color: rgba(30, 41, 59, 0.7);
  transition: all 0.12s ease;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: inherit;
  text-shadow: 0 1px 1px rgba(255, 255, 255, 0.5);
  box-shadow: inset 0 -2px 0 rgba(0, 0, 0, 0.06), 0 1px 1px rgba(0, 0, 0, 0.05);
}

.cell:hover {
  filter: brightness(0.88);
  transform: scale(1.08);
  z-index: 1;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.cell.start-cell {
  box-shadow: inset 0 0 0 2px #16a34a, 0 0 8px rgba(22, 163, 74, 0.3);
}

.cell.start-cell::after {
  content: "START";
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 7px;
  font-weight: 800;
  color: #fff;
  background: #16a34a;
  border-radius: 3px;
  padding: 0 4px;
  line-height: 13px;
  letter-spacing: 0.3px;
}

/* ── Hyperparameters ── */

.hp-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}

.hp-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.hp-group > label {
  font-size: 12px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.1px;
}

.hp-group > label svg[aria-hidden] {
  font-size: 12px;
  opacity: 0.55;
  margin-right: 2px;
}

.hp-group > input {
  padding: 8px 10px;
  font-size: 14px;
  font-weight: 600;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #f8fafc;
  width: 100%;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.hp-group > input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
  background: #fff;
}

.hp-hint {
  font-size: 11px;
  color: var(--light);
  line-height: 1.35;
}

/* ── Action Groups ── */

.action-groups {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-bottom: 16px;
}

.action-group {
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: linear-gradient(180deg, #fafbfd 0%, #f4f7fb 100%);
}

.action-group h3 {
  margin: 0 0 12px;
  font-size: 12px;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ── Advanced / Details ── */

details {
  margin-bottom: 12px;
}

details summary {
  cursor: pointer;
  font-size: 13px;
  color: var(--muted);
  padding: 8px 0;
  user-select: none;
  font-weight: 500;
}

details summary:hover {
  color: var(--text);
}

.advanced-inner {
  padding: 12px 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.advanced-inner > label {
  font-size: 12px;
  color: var(--muted);
  font-weight: 500;
}

/* ── Code Areas ── */

.code-area {
  width: 100%;
  font-family: "SF Mono", "Fira Code", "Cascadia Code", "Consolas", monospace;
  font-size: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px;
  background: #f8fafc;
  resize: vertical;
  box-sizing: border-box;
  color: var(--text);
  line-height: 1.6;
}

.card-body > label {
  display: block;
  font-size: 12px;
  color: var(--muted);
  font-weight: 600;
  margin-bottom: 4px;
  margin-top: 10px;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

/* ── Toast ── */

.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  padding: 12px 24px;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 600;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.18);
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 100;
  max-width: 600px;
  text-align: center;
  opacity: 0;
  pointer-events: none;
  backdrop-filter: blur(8px);
}

.toast.visible {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.toast.success {
  background: linear-gradient(135deg, #065f46, #047857);
  color: #d1fae5;
}

.toast.error {
  background: linear-gradient(135deg, #991b1b, #b91c1c);
  color: #fee2e2;
}

.toast.info {
  background: linear-gradient(135deg, #1e3a5f, #1e4280);
  color: #dbeafe;
}

/* ── Footer ── */

footer {
  text-align: center;
  padding: 20px 16px;
  color: var(--light);
  font-size: 12px;
  border-top: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.5);
}

footer p {
  margin: 0;
}

footer .disclaimer {
  margin-top: 6px;
  font-size: 10px;
  opacity: 0.7;
  font-style: italic;
}

/* ── Responsive ── */

@media (max-width: 640px) {
  header {
    padding: 16px;
  }

  .logo h1 {
    font-size: 18px;
  }

  main {
    padding: 12px 10px 30px;
  }

  .card-body {
    padding: 14px;
  }

  .grid-editor {
    flex-direction: column;
  }

  .paint-palette {
    min-width: unset;
    width: 100%;
  }

  .swatches {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .action-groups {
    grid-template-columns: 1fr;
  }

  .scenario-controls {
    gap: 8px;
  }

  .control-row {
    gap: 8px;
  }

  .cell {
    width: 44px;
    height: 44px;
  }
}