*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0a0a0f;
  --surface: #111118;
  --surface2: #1a1a24;
  --border: #ffffff0f;
  --text: #f0f0f8;
  --text-muted: #6b6b85;
  --accent: #7c6fff;
  --accent-glow: #7c6fff33;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'DM Mono', monospace;
  min-height: 80vh;
  overflow-x: hidden;
}

/* ── Hero ────────────────────────────────────────────────── */
.hero { margin-bottom: 56px; }

.hero h1 {
  font-family: 'Syne', sans-serif;
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -2px;
  margin-bottom: 16px;
}

.hero h1 span { color: var(--text-muted); }

.hero p {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.7;
  max-width: 420px;
}

/* ── Input panel ─────────────────────────────────────────── */
.input-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 28px 36px 32px;
  margin-bottom: 48px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* Header row: tab switcher + dark mode toggle */
.input-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

/* Input tab switcher (Custom / Armonías) */
.input-tab-switcher {
  display: flex;
  gap: 4px;
  background: var(--surface2);
  border-radius: 10px;
  padding: 4px;
}

.input-tab-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-family: 'DM Mono', monospace;
  font-size: 12px;
  padding: 8px 18px;
  border-radius: 7px;
  cursor: pointer;
  transition: all .2s;
  letter-spacing: 1px;
}

.input-tab-btn.active {
  background: var(--surface);
  color: var(--text);
  box-shadow: 0 1px 4px #0006;
}

/* Dark mode toggle */
.dark-toggle {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  user-select: none;
}

.dark-toggle input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-track {
  position: relative;
  width: 40px;
  height: 22px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 11px;
  transition: background .2s, border-color .2s;
  flex-shrink: 0;
}

.dark-toggle input:checked + .toggle-track {
  background: var(--accent);
  border-color: var(--accent);
}

.toggle-thumb {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 14px;
  height: 14px;
  background: #fff;
  border-radius: 50%;
  transition: transform .2s;
}

.dark-toggle input:checked + .toggle-track .toggle-thumb {
  transform: translateX(18px);
}

.toggle-label {
  font-size: 12px;
  letter-spacing: 1px;
  color: var(--text-muted);
  text-transform: uppercase;
}

/* Tab content */
.input-content { display: flex; flex-direction: column; gap: 16px; }
.input-content.hidden { display: none; }

/* Brand fields (flex row, wrap) */
.brand-fields {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.brand-field {
  flex: 1;
  min-width: 160px;
}

/* Armonías fields */
.armonias-fields {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.armonias-fields .field {
  flex: 1;
  min-width: 160px;
}

/* Harmony select */
.harmony-select {
  width: 100%;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 16px;
  color: var(--text);
  font-family: 'DM Mono', monospace;
  font-size: 14px;
  letter-spacing: 0.5px;
  cursor: pointer;
  outline: none;
  transition: border-color .2s;
  -webkit-appearance: none;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236b6b85' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}

.harmony-select:hover  { border-color: #ffffff22; }
.harmony-select:focus  { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); }
.harmony-select option { background: #1a1a24; }

/* Color count controls */
.color-count-controls {
  display: flex;
  gap: 8px;
  align-items: center;
}

.count-btn {
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-family: 'DM Mono', monospace;
  font-size: 12px;
  letter-spacing: 1px;
  padding: 7px 16px;
  border-radius: 8px;
  cursor: pointer;
  transition: all .2s;
}

.count-btn:hover:not(:disabled) {
  border-color: #ffffff22;
  color: var(--text);
}

.count-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.count-btn--add {
  color: var(--accent);
  border-color: #7c6fff33;
}

.count-btn--add:hover:not(:disabled) {
  background: #7c6fff14;
  border-color: var(--accent);
  color: var(--accent);
}

/* Footer: generate button */
.input-footer {
  display: flex;
  justify-content: flex-end;
  padding-top: 4px;
  border-top: 1px solid var(--border);
}

/* ── Field / color input (reused) ────────────────────────── */
.field label {
  display: block;
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 10px;
}

.color-input-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 16px;
  transition: border-color .2s;
  cursor: pointer;
}

.color-input-wrap:hover        { border-color: #ffffff22; }
.color-input-wrap:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); }

.swatch {
  width: 32px; height: 32px;
  border-radius: 8px;
  border: 2px solid #ffffff22;
  cursor: pointer;
  flex-shrink: 0;
  position: relative;
  overflow: hidden;
}

.swatch input[type="color"] {
  position: absolute;
  inset: -4px;
  width: calc(100% + 8px);
  height: calc(100% + 8px);
  opacity: 0;
  cursor: pointer;
  border: none;
}

.hex-input {
  background: none;
  border: none;
  outline: none;
  color: var(--text);
  font-family: 'DM Mono', monospace;
  font-size: 14px;
  width: 90px;
  letter-spacing: 1px;
}

.hex-input::placeholder { color: var(--text-muted); }

/* ── Generate button ─────────────────────────────────────── */
.generate-btn {
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 12px;
  padding: 0 28px;
  height: 48px;
  font-family: 'Syne', sans-serif;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.3px;
  cursor: pointer;
  transition: all .2s;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.generate-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #ffffff22, transparent);
  opacity: 0;
  transition: opacity .2s;
}

.generate-btn:hover          { transform: translateY(-2px); box-shadow: 0 8px 30px var(--accent-glow); }
.generate-btn:hover::before  { opacity: 1; }
.generate-btn:active         { transform: translateY(0); }

/* ── Output ──────────────────────────────────────────────── */
#output         { display: none; }
#output.visible { display: block; }

.section-label {
  font-size: 11px;
  letter-spacing: 3px;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.section-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

.palette-block { margin-bottom: 48px; }

.palette-name {
  font-family: 'Syne', sans-serif;
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.palette-name .base-swatch {
  width: 20px; height: 20px;
  border-radius: 50%;
  border: 2px solid #ffffff22;
  flex-shrink: 0;
}

/* ── Shades with shift controls ──────────────────────────── */
.shades-with-controls {
  display: flex;
  align-items: stretch;
  gap: 8px;
}

.shades-row {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(78px, 1fr));
  gap: 6px;
}

/* +100 / −100 shift buttons */
.shift-btn {
  flex-shrink: 0;
  width: 40px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text-muted);
  font-family: 'DM Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.5px;
  cursor: pointer;
  transition: all .2s;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  padding: 10px 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.shift-btn:hover {
  background: var(--surface);
  border-color: #ffffff22;
  color: var(--text);
}

.shift-btn--light { order: -1; }
.shift-btn--dark  { order: 1; }

/* ── Shade cell ──────────────────────────────────────────── */
.shade-cell {
  border-radius: 10px;
  overflow: hidden;
  cursor: pointer;
  transition: transform .15s;
  position: relative;
  background: var(--surface2);
}

.shade-cell:hover { transform: scale(0.95); z-index: 2; }

.shade-color {
  height: 80px;
}

.shade-info {
  padding: 6px 8px;
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--surface2);
}

/* Mini color preview dot inside info bar */
.shade-preview {
  width: 14px;
  height: 14px;
  border-radius: 4px;
  flex-shrink: 0;
  border: 1px solid rgba(255,255,255,0.12);
}

.shade-text {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.shade-step {
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 1px;
  display: block;
  line-height: 1.3;
}

.shade-hex {
  font-size: 10px;
  color: var(--text);
  display: block;
  letter-spacing: 0.3px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ── Semantic colors ─────────────────────────────────────── */
.semantic-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 12px;
  margin-bottom: 48px;
}

.semantic-card {
  border-radius: 16px;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--border);
}

.semantic-shades {
  display: flex;
  height: 48px;
}

.semantic-shade { flex: 1; }

.semantic-label { padding: 12px 14px; }

.semantic-name {
  font-family: 'Syne', sans-serif;
  font-size: 13px;
  font-weight: 700;
  display: block;
  margin-bottom: 2px;
}

.semantic-hex {
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 1px;
}

/* ── Export panel ────────────────────────────────────────── */
.export-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 32px;
  margin-top: 48px;
}

.export-tabs {
  display: flex;
  gap: 4px;
  background: var(--surface2);
  border-radius: 10px;
  padding: 4px;
  margin-bottom: 24px;
  width: fit-content;
}

.tab-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-family: 'DM Mono', monospace;
  font-size: 12px;
  padding: 8px 16px;
  border-radius: 8px;
  cursor: pointer;
  transition: all .2s;
  letter-spacing: 1px;
}

.tab-btn.active {
  background: var(--surface);
  color: var(--text);
  box-shadow: 0 1px 4px #0006;
}

.code-block {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  font-size: 12px;
  line-height: 1.8;
  overflow-x: auto;
  max-height: 360px;
  overflow-y: auto;
  white-space: pre;
  color: #a0a0c8;
  display: none;
}

.code-block.active { display: block; }

.code-block .k { color: #7c6fff; }
.code-block .v { color: #56d9a0; }
.code-block .p { color: #6b6b85; }
.code-block .s { color: #e0a070; }

.buttons-color {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 12px;
}

.bs-gen-btn, .copy-btn {
  background: var(--color-accent);
  color: var(--color-text-inverse);
  border: none;
  border-radius: var(--radius-lg);
  padding: 10px 20px;
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: var(--weight-bold);
  cursor: pointer;
  transition: all var(--duration-base) var(--ease-out-expo);
  letter-spacing: 0.01em;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  white-space: nowrap;
}

.bs-gen-btn:hover {
  background: var(--color-accent-dim);
  transform: translateY(-1px);
  box-shadow: 0 8px 28px var(--color-accent-glow);
}

.bs-gen-btn:active { transform: translateY(0); }

.bs-gen-btn--figma {
  background: #1a1a2e;
  color: #fff;
  box-shadow: none;
}

.bs-gen-btn--figma:hover {
  background: #2a2a3e;
  box-shadow: 0 8px 24px rgba(26,26,46,.4);
  transform: translateY(-1px);
}

.bs-gen-btn--figma:active { transform: translateY(0); }

.copy-btn:hover { border-color: #ffffff22; color: var(--text-muted); }

/* ── Toast ───────────────────────────────────────────────── */
.toast {
  position: fixed;
  bottom: 32px;
  right: -50px;
  background: var(--surface);
  border: 1px solid #56d9a055;
  color: #56d9a0;
  border-radius: 12px;
  padding: 12px 20px;
  font-size: 13px;
  letter-spacing: 1px;
  transform: translateY(80px);
  opacity: 0;
  transition: all .3s cubic-bezier(.34,1.56,.64,1);
  z-index: 999;
}

.toast.show { transform: translateX(-70px) !important; opacity: 1 !important; }

/* ── Scrollbar ───────────────────────────────────────────── */
::-webkit-scrollbar         { width: 6px; height: 6px; }
::-webkit-scrollbar-track   { background: transparent; }
::-webkit-scrollbar-thumb   { background: #ffffff15; border-radius: 3px; }

/* ── Mobile ──────────────────────────────────────────────── */
@media (max-width: 640px) {
  .input-panel { padding: 20px; }

  .input-panel-header { gap: 12px; }

  .brand-fields,
  .armonias-fields { flex-direction: column; }

  .buttons-color {
    width: 100%;
    flex-direction: column;
    justify-content: center;
    align-items: center;
  }

  .copy-btn, .bs-gen-btn--figma {
    width: 100%;
    justify-content: center;
  }

  .input-footer { justify-content: stretch; }
  .generate-btn { width: 100%; }

  .shades-row { grid-template-columns: repeat(5, 1fr); }

  .shade-info   { display: none; }
  .shade-color  { height: 48px; }

  .shift-btn {
    width: 28px;
    font-size: 9px;
  }
}