/* ── BESS Document Generator - CAVO Energías Light Theme ── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  --bg-dark: #EBE5E0;
  --bg-darker: #E0D8D1;
  --bg-card: rgba(255, 255, 255, 0.85);
  --bg-hover: rgba(75, 184, 166, 0.08);
  --accent: #4BB8A6;
  --accent-glow: rgba(75, 184, 166, 0.12);
  --accent-green: #4BB8A6;
  --accent-secondary: #38B2AC;
  --accent-red: #ef4444;
  --accent-orange: #ff8c42;
  --accent-yellow: #fbbf24;
  --text-primary: #0A1E08;
  --text-1: #0A1E08;
  --text-secondary: #4a5e52;
  --text-2: #4a5e52;
  --text-3: #8a9990;
  --border: rgba(10, 30, 8, 0.10);
  --radius: 12px;
  --radius-sm: 8px;
  --glass: rgba(255, 255, 255, 0.5);
  --cavo-dark: #0A1E08;
}

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

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg-dark);
  color: var(--text-1);
  min-height: 100vh;
  background-image:
    radial-gradient(ellipse at 20% 0%, rgba(75,184,166,0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 100%, rgba(56,178,172,0.06) 0%, transparent 50%);
}

.app-container { max-width: 960px; margin: 0 auto; padding: 2rem 1.5rem; }

/* ── Header ── */
.app-header { text-align: center; margin-bottom: 2rem; }
.app-header-logo { display: block; margin: 0 auto 1rem; height: 48px; max-width: 90%; object-fit: contain; }
.app-header h1 { font-size: 1.8rem; font-weight: 700; color: var(--cavo-dark); }
.app-header p { color: var(--text-2); margin-top: 0.4rem; font-size: 0.9rem; }

/* ── Stepper ── */
.stepper { display: flex; align-items: center; justify-content: center; gap: 0; margin-bottom: 2rem; }
.step-item { display: flex; align-items: center; gap: 0.5rem; padding: 0.5rem 1rem; border-radius: 20px; cursor: default; transition: all 0.3s; background: var(--glass); border: 1px solid var(--border); }
.step-item.active { background: var(--accent-glow); border-color: var(--accent); }
.step-item.completed { background: rgba(75,184,166,0.1); border-color: var(--accent-green); }
.step-number { display: inline-flex; align-items: center; justify-content: center; width: 24px; height: 24px; border-radius: 50%; font-size: 0.75rem; font-weight: 700; background: var(--border); }
.step-item.active .step-number { background: var(--accent); color: #000; }
.step-item.completed .step-number { background: var(--accent-green); color: #000; }
.step-label { font-size: 0.85rem; color: var(--text-2); }
.step-item.active .step-label { color: var(--accent); font-weight: 600; }
.step-connector { width: 40px; height: 2px; background: var(--border); }
.step-connector.completed { background: var(--accent-green); }

/* ── Glass Card ── */
.glass-card { background: #0f2b1a; border: 1px solid rgba(75,184,166,0.15); border-radius: var(--radius); padding: 2rem; box-shadow: 0 4px 20px rgba(0,0,0,0.15); color: #e8f0ec; }

/* ── Sections ── */
.section { display: none; animation: fadeIn 0.3s ease; }
.section.active { display: block; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

/* ── Template Banner ── */
.template-banner { display: flex; align-items: center; gap: 1rem; padding: 1rem; background: rgba(75,184,166,0.1); border: 1px solid rgba(75,184,166,0.25); border-radius: var(--radius-sm); margin-bottom: 1.5rem; }
.template-icon { font-size: 1.5rem; }
.template-name { font-weight: 600; }
.template-detail { font-size: 0.85rem; color: var(--text-2); margin-top: 2px; }
.template-status { font-size: 1.2rem; margin-left: auto; }

/* ── Upload Zones ── */
.upload-zones { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-bottom: 1rem; }
.upload-zone { padding: 2rem 1.5rem; border: 2px dashed rgba(75,184,166,0.25); border-radius: var(--radius-sm); text-align: center; cursor: pointer; transition: all 0.3s; background: rgba(255,255,255,0.04); }
.upload-zone:hover, .upload-zone.dragover { border-color: var(--accent); background: var(--accent-glow); }
.upload-zone.uploaded { border-color: var(--accent-green); border-style: solid; background: rgba(75,184,166,0.08); }
.zone-icon { font-size: 2rem; display: block; margin-bottom: 0.5rem; }
.zone-title { font-weight: 600; font-size: 0.95rem; }
.zone-subtitle { font-size: 0.8rem; color: var(--text-3); margin-top: 4px; }
.zone-filename { font-size: 0.85rem; color: var(--accent-green); font-weight: 600; margin-top: 6px; }
.upload-zone input[type="file"] { display: none; }

.csv-note { font-size: 0.82rem; color: #a0b8ac; padding: 0.8rem 1rem; background: rgba(255,255,255,0.04); border-radius: var(--radius-sm); border: 1px solid rgba(75,184,166,0.15); margin-bottom: 1.5rem; display: flex; align-items: flex-start; gap: 0.5rem; line-height: 1.4; }
.csv-note.csv-loaded { border-color: rgba(75,184,166,0.4); background: rgba(75,184,166,0.08); color: var(--accent-green); }

/* ── Nav Buttons ── */
.nav-buttons { display: flex; justify-content: space-between; margin-top: 1.5rem; }

/* ── Buttons ── */
.btn { padding: 0.7rem 1.5rem; border: none; border-radius: var(--radius-sm); font-family: inherit; font-size: 0.9rem; font-weight: 600; cursor: pointer; transition: all 0.2s; }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }
.btn-primary { background: linear-gradient(135deg, var(--accent), var(--accent-secondary)); color: #000; }
.btn-primary:hover:not(:disabled) { transform: translateY(-1px); box-shadow: 0 4px 15px rgba(75,184,166,0.3); }
.btn-secondary { background: rgba(255,255,255,0.06); color: #c0d0c8; border: 1px solid rgba(75,184,166,0.2); }
.btn-secondary:hover { border-color: var(--accent); color: #fff; }
.btn-accent { background: var(--accent-green); color: #000; }
.btn-success { background: linear-gradient(135deg, var(--accent-green), #3a9a8a); color: #000; padding: 1rem 2.5rem; font-size: 1.1rem; width: 100%; }
.btn-success:hover:not(:disabled) { transform: translateY(-1px); box-shadow: 0 4px 20px rgba(75,184,166,0.3); }
.btn-sm { padding: 0.4rem 0.8rem; font-size: 0.8rem; }
.btn-ghost { background: transparent; color: var(--text-secondary); border: 1px dashed var(--border); }
.btn-ghost:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); background: var(--accent-glow); }

/* ── Legend ── */
.editor-legend { display: flex; flex-wrap: wrap; align-items: center; gap: 0.8rem; padding: 0.6rem 1rem; margin-bottom: 1rem; background: rgba(0,0,0,0.2); border: 1px solid rgba(75,184,166,0.12); border-radius: var(--radius-sm); }
.legend-title { font-size: 0.78rem; font-weight: 700; color: #a0b8ac; }
.legend-item { display: inline-flex; align-items: center; gap: 0.3rem; font-size: 0.72rem; color: #8a9a92; }
.legend-sep { color: rgba(75,184,166,0.25); font-size: 0.85rem; margin: 0 0.2rem; }

/* ── Offer Lines Inline ── */
.offer-lines-inline { margin-top: 1rem; padding-top: 1rem; border-top: 1px solid rgba(75,184,166,0.12); }
.offer-lines-title { font-size: 0.9rem; font-weight: 600; color: #c0d0c8; margin-bottom: 0.6rem; }

/* ── Editor ── */
.editor-section { margin-bottom: 1rem; border: 1px solid rgba(75,184,166,0.12); border-radius: var(--radius-sm); overflow: hidden; }
.section-header { display: flex; justify-content: space-between; align-items: center; padding: 0.8rem 1rem; background: rgba(75,184,166,0.08); cursor: pointer; font-weight: 600; font-size: 0.95rem; color: #e8f0ec; }
.section-header-left { display: flex; align-items: center; gap: 0.6rem; }
.section-header:hover { background: rgba(75,184,166,0.14); }
.section-toggle { color: #7a9a8c; font-size: 0.8rem; }
.section-desc-bar { display: flex; align-items: center; gap: 0.5rem; padding: 0.35rem 1rem; background: rgba(0,0,0,0.15); border-bottom: 1px solid rgba(75,184,166,0.08); flex-wrap: wrap; }
.section-desc-text { font-size: 0.75rem; color: #7a9a8c; font-style: italic; }
.doc-pill { font-size: 0.68rem; padding: 0.15rem 0.5rem; border-radius: 10px; font-weight: 600; }
.doc-pill.doc-pptx { background: rgba(75,184,166,0.15); color: #5bc4b4; }
.doc-pill.doc-oferta { background: rgba(255,140,66,0.15); color: #ff9a5c; }
.doc-pill.doc-contrato { background: rgba(0,180,216,0.15); color: #3ac4e0; }
.section-summary-badge { font-size: 0.72rem; padding: 0.15rem 0.55rem; border-radius: 10px; background: rgba(255,255,255,0.08); color: #7a9a8c; font-weight: 500; }
.section-summary-badge.complete { background: rgba(75,184,166,0.2); color: var(--accent-green); }
.section-body { padding: 1rem; }
.field-row { display: flex; align-items: center; gap: 0.5rem; margin-bottom: 0.6rem; padding-left: 0.3rem; border-left: 3px solid transparent; transition: border-color 0.2s; }
.field-row.has-value { border-left-color: var(--accent-green); }
.field-row.empty { border-left-color: rgba(255,255,255,0.08); }
.auto-badge { display: inline-block; margin-left: 0.4rem; padding: 0.1rem 0.45rem; background: rgba(59,130,246,0.15); border: 1px solid rgba(59,130,246,0.25); border-radius: 8px; font-size: 0.6rem; font-weight: 600; color: #60a5fa; letter-spacing: 0.3px; }
.field-label { flex: 0 0 200px; font-size: 0.85rem; color: #a0b8ac; }
.marker-tag { font-size: 0.7rem; color: var(--accent-green); margin-left: 0.5rem; background: rgba(75,184,166,0.15); padding: 1px 6px; border-radius: 4px; }
.field-input { flex: 1; padding: 0.5rem 0.8rem; background: rgba(0,0,0,0.2); border: 1px solid rgba(75,184,166,0.15); border-radius: 6px; color: #e8f0ec; font-family: inherit; font-size: 0.85rem; }
.field-input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-glow); }

/* ── Doc Need Indicators (left side) ── */
.doc-needs { display: inline-flex; gap: 0.15rem; flex-shrink: 0; align-items: center; min-width: 52px; justify-content: flex-start; }
.doc-need { font-size: 0.85rem; padding: 0.1rem 0.15rem; line-height: 1; }

/* ── Fill Status Dot (right side) ── */
.fill-dot { flex-shrink: 0; font-size: 0.65rem; line-height: 1; cursor: default; }

/* ── Custom Fields ── */
.add-field-section { margin-top: 1.5rem; padding-top: 1.5rem; border-top: 1px solid var(--border); }
.section-subtitle { font-size: 1rem; font-weight: 600; margin-bottom: 0.8rem; }
.section-desc { font-size: 0.85rem; color: var(--text-2); margin-bottom: 1rem; }
.add-field-row { display: flex; gap: 0.8rem; align-items: flex-end; }
.add-field-row .field-group { flex: 1; }
.add-field-row .field-group label { display: block; margin-bottom: 4px; }
.custom-field-tag { display: inline-flex; align-items: center; gap: 0.5rem; background: rgba(75,184,166,0.1); border: 1px solid rgba(75,184,166,0.25); border-radius: 6px; padding: 0.3rem 0.8rem; margin: 0.4rem 0.3rem 0 0; font-size: 0.8rem; color: var(--accent); }
.tag-remove { background: none; border: none; color: var(--accent-red); cursor: pointer; font-size: 0.9rem; padding: 0 2px; }

/* ── Chart Gallery ── */
.chart-gallery-section { margin-top: 2rem; padding-top: 2rem; border-top: 1px solid var(--border); }
.chart-controls { display: flex; align-items: center; gap: 0.6rem; margin-bottom: 1rem; }
.chart-counter { margin-left: auto; font-size: 0.85rem; color: var(--accent); font-weight: 600; }

.chart-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(270px, 1fr)); gap: 1rem; }
.chart-card { border: 2px solid var(--border); border-radius: var(--radius-sm); overflow: hidden; cursor: pointer; transition: all 0.3s; background: var(--glass); }
.chart-card:hover:not(.unavailable) { border-color: rgba(0,212,255,0.3); transform: translateY(-2px); box-shadow: 0 4px 15px rgba(0,0,0,0.3); }
.chart-card.selected { border-color: var(--accent-green); background: rgba(75,184,166,0.06); box-shadow: 0 0 0 1px rgba(75,184,166,0.2), 0 4px 15px rgba(0,0,0,0.2); }
.chart-card.unavailable { opacity: 0.4; cursor: not-allowed; }

.chart-preview { width: 100%; aspect-ratio: 16/10; overflow: hidden; background: #080818; display: flex; align-items: center; justify-content: center; }
.chart-preview img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s; }
.chart-card:hover:not(.unavailable) .chart-preview img { transform: scale(1.02); }
.unavailable-preview { background: rgba(0,0,0,0.3); }
.unavail-icon { font-size: 2rem; opacity: 0.5; }

.chart-info { padding: 0.8rem; }
.chart-name { font-weight: 600; font-size: 0.9rem; margin-bottom: 4px; }
.chart-desc { font-size: 0.75rem; color: var(--text-3); line-height: 1.3; }

.chart-toggle { padding: 0.4rem 0.8rem; text-align: center; border-top: 1px solid var(--border); }
.toggle-label { font-size: 0.75rem; color: var(--text-3); }
.chart-card.selected .toggle-label { color: var(--accent-green); }
.chart-card.selected .toggle-label::before { content: '✓ '; }

.chart-loading { grid-column: 1 / -1; text-align: center; padding: 2rem; color: var(--text-3); display: flex; align-items: center; justify-content: center; gap: 0.8rem; }
.chart-error { grid-column: 1 / -1; text-align: center; padding: 1.5rem; color: var(--accent-red); }

.spinner { display: inline-block; width: 20px; height: 20px; border: 2px solid var(--border); border-top-color: var(--accent); border-radius: 50%; animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Generate Section ── */
.generate-section { margin-top: 2rem; padding-top: 2rem; border-top: 1px solid var(--border); text-align: center; }

.summary-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-bottom: 1.5rem; }
.summary-stat { background: rgba(75,184,166,0.08); border: 1px solid rgba(75,184,166,0.2); border-radius: var(--radius-sm); padding: 1rem; text-align: center; }
.stat-value { font-size: 1.8rem; font-weight: 700; color: var(--accent); }
.stat-label { font-size: 0.75rem; color: #a0b8ac; margin-top: 4px; }

.progress-container { display: none; margin-top: 1rem; }
.progress-bar { width: 100%; height: 6px; background: var(--glass); border-radius: 3px; overflow: hidden; }
.progress-fill { height: 100%; background: linear-gradient(90deg, var(--accent), var(--accent-green)); transition: width 0.5s ease; width: 0%; }
.progress-text { font-size: 0.8rem; color: var(--text-3); margin-top: 6px; }

.download-card { display: none; margin-top: 1.5rem; padding: 1.5rem; background: rgba(75,184,166,0.08); border: 1px solid rgba(75,184,166,0.2); border-radius: var(--radius-sm); }
.dl-icon { font-size: 2rem; }
.dl-filename { font-size: 0.85rem; color: var(--text-2); margin: 0.5rem 0 1rem; }
.download-card h3 { margin-top: 0.5rem; }

/* ── Formula Fields ── */
.formula-field-row { position: relative; }
.formula-badge {
  display: inline-block; margin-left: 0.5rem; padding: 0.1rem 0.5rem;
  background: linear-gradient(135deg, rgba(0,212,255,0.2), rgba(75,184,166,0.2));
  border: 1px solid rgba(0,212,255,0.3); border-radius: 10px;
  font-size: 0.65rem; font-weight: 600; color: var(--accent);
  text-transform: uppercase; letter-spacing: 0.5px;
}
.formula-input-group {
  display: flex; gap: 0.4rem; flex: 1; align-items: center;
}
.formula-input-group .field-input { flex: 1; }
.formula-toggle-btn {
  padding: 0.4rem 0.7rem; border: 1px solid rgba(0,212,255,0.3);
  border-radius: var(--radius-sm); background: rgba(0,212,255,0.08);
  color: var(--accent); font-weight: 700; font-size: 0.8rem; font-style: italic;
  cursor: pointer; transition: all 0.2s; white-space: nowrap;
}
.formula-toggle-btn:hover {
  background: rgba(0,212,255,0.2); border-color: var(--accent);
}
.formula-detail {
  display: none; flex-direction: column; gap: 0.4rem;
  margin-top: 0.4rem; padding: 0.6rem 0.8rem;
  background: rgba(0,212,255,0.04); border: 1px solid rgba(0,212,255,0.12);
  border-radius: var(--radius-sm);
}
.formula-detail.open { display: flex; }
.formula-desc {
  font-size: 0.75rem; color: var(--accent-green); font-weight: 500;
}
.formula-expr {
  font-family: 'Courier New', monospace; font-size: 0.8rem;
  padding: 0.3rem 0.5rem; border-radius: 4px;
  background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1);
  color: var(--text-1);
}
.formula-recalc-btn {
  align-self: flex-end; padding: 0.3rem 0.8rem;
  background: var(--accent-green); color: #000; border: none;
  border-radius: 4px; font-size: 0.75rem; font-weight: 600;
  cursor: pointer; transition: opacity 0.2s;
}
.formula-recalc-btn:hover { opacity: 0.85; }

/* ── Offer Section ── */
.generate-buttons {
  display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap;
}
.generate-buttons .btn { position: relative; }
.btn-completeness {
  display: inline-block; margin-left: 0.5rem; padding: 0.15rem 0.5rem;
  background: rgba(255,255,255,0.15); border-radius: 8px;
  font-size: 0.7rem; font-weight: 600; opacity: 0.8;
}
.btn-completeness.complete {
  background: rgba(75,184,166,0.3); color: #fff;
}
.btn-offer {
  background: linear-gradient(135deg, #ff8c42, #e6703a); color: #fff;
  border: none; padding: 0.85rem 2rem; border-radius: var(--radius);
  font-size: 1rem; font-weight: 600; cursor: pointer;
  transition: all 0.3s; box-shadow: 0 0 15px rgba(255,140,66,0.3);
}
.btn-offer:hover { transform: translateY(-2px); box-shadow: 0 0 25px rgba(255,140,66,0.5); }
.btn-offer:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

.offer-lines-card {
  margin: 1rem 0; border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden;
}
.offer-line-row {
  display: flex; gap: 0.5rem; align-items: center;
  padding: 0.3rem 0;
}
.offer-line-row .field-input { flex: 1; }
.offer-line-add {
  display: flex; gap: 0.5rem; align-items: center;
  padding: 0.5rem 0; border-top: 1px solid var(--border); margin-top: 0.5rem;
}
.offer-line-add .field-input { flex: 1; }
.offer-line-remove {
  background: rgba(239,68,68,0.15); color: var(--accent-red);
  border: 1px solid rgba(239,68,68,0.3); border-radius: 4px;
  padding: 0.2rem 0.5rem; cursor: pointer; font-size: 0.8rem;
}
.offer-line-remove:hover { background: rgba(239,68,68,0.3); }

/* ── Contract EPC Section ── */
.btn-contract {
  background: linear-gradient(135deg, #0077b6, #00b4d8); color: #fff;
  border: none; padding: 0.85rem 2rem; border-radius: var(--radius);
  font-size: 1rem; font-weight: 600; cursor: pointer;
  transition: all 0.3s; box-shadow: 0 0 15px rgba(0,180,216,0.3);
}
.btn-contract:hover { transform: translateY(-2px); box-shadow: 0 0 25px rgba(0,180,216,0.5); }
.btn-contract:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

.contract-card {
  margin: 1rem 0; border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden;
}
.contract-grid {
  display: flex; flex-direction: column; gap: 0.7rem;
}
.contract-row {
  display: flex; gap: 1rem;
}
.contract-row .contract-field {
  flex: 1; display: flex; flex-direction: column; gap: 0.25rem;
}
.contract-row .contract-field.full-width { flex: 1 1 100%; }
.contract-row .contract-field label {
  font-size: 0.78rem; font-weight: 500; color: var(--text-secondary);
}
.contract-auto-note {
  font-size: 0.75rem; color: var(--text-secondary); opacity: 0.7;
  margin: 0.5rem 0 0; padding: 0.4rem 0.6rem;
  background: rgba(59,130,246,0.08); border-radius: 4px;
  border-left: 3px solid rgba(59,130,246,0.4);
}
.upload-hint {
  display: block; font-size: 0.7rem; color: var(--text-secondary);
  opacity: 0.6; margin-top: 0.2rem; font-style: italic;
}
.file-upload {
  padding: 0.35rem; cursor: pointer;
  font-size: 0.8rem;
}
.contract-checkbox-row {
  display: flex; gap: 0.5rem; align-items: center;
}
.contract-checkbox-row .field-input { flex: 1; }
.checkbox-inline {
  display: flex; align-items: center; gap: 0.3rem;
  font-size: 0.75rem; color: var(--text-secondary);
  white-space: nowrap; cursor: pointer;
}
.checkbox-inline input[type="checkbox"] { cursor: pointer; }

/* Milestones */
.milestones-section {
  margin-top: 0.8rem; padding-top: 0.8rem;
  border-top: 1px solid var(--border);
}
.milestones-label {
  font-size: 0.82rem; font-weight: 600; color: var(--text-secondary);
  margin-bottom: 0.4rem; display: block;
}
.milestones-row {
  display: flex; align-items: center; gap: 0.6rem; flex-wrap: wrap;
}
.milestone-item {
  display: flex; flex-direction: column; align-items: center; gap: 0.2rem;
}
.milestone-title {
  font-size: 0.72rem; font-weight: 500; color: var(--text-secondary);
}
.milestone-input-wrap {
  display: flex; align-items: center; gap: 0.2rem;
}
.milestone-input {
  width: 50px; padding: 0.35rem 0.4rem; font-size: 0.85rem;
  background: var(--bg-darker); border: 1px solid var(--border);
  border-radius: 4px; color: var(--text-primary); text-align: center;
}
.milestone-input-wrap span {
  font-size: 0.8rem; color: var(--text-secondary);
}
.milestone-sep {
  font-size: 1.1rem; font-weight: 700; color: var(--text-secondary);
}
.milestone-total {
  background: rgba(16,185,129,0.1); padding: 0.3rem 0.6rem;
  border-radius: 6px;
}
.milestone-sum {
  font-size: 0.95rem; font-weight: 700; color: var(--accent-green);
}
.milestone-sum.invalid { color: var(--accent-red); }

/* ── Dropdown Select (modelo batería) ── */
select.field-select {
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M2 4l4 4 4-4' fill='none' stroke='%234a5e52' stroke-width='1.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  padding-right: 2rem;
}
select.field-select:focus { border-color: var(--accent); }
.modelo-input-group { display: flex; flex-direction: column; gap: 0.4rem; flex: 1; }
.modelo-manual-input { border-style: dashed; }

/* ── Button Sizes ── */
.btn-lg { font-size: 1.1rem; padding: 0.85rem 2rem; }
.btn-sm { font-size: 0.82rem; padding: 0.35rem 0.75rem; }

/* ── Generate Buttons ── */
.generate-buttons {
  display: flex; flex-direction: column; gap: 0.75rem;
  margin-top: 1.5rem;
}
.btn-generate-equal {
  width: 100%; font-size: 1rem; padding: 0.85rem 1.5rem;
  text-align: center;
}

/* ── Results Panel ── */
.results-panel {
  background: var(--bg-card);
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-top: 1.5rem;
  box-shadow: 0 4px 20px rgba(75, 184, 166, 0.12);
  animation: fadeSlideIn 0.4s ease;
}
@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}
.results-header {
  display: flex; align-items: center; gap: 0.75rem;
  margin-bottom: 1rem; padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}
.results-icon { font-size: 1.5rem; }
.results-header h3 { font-size: 1.1rem; font-weight: 600; color: var(--text-1); }
.results-header h3 span { color: var(--accent); font-weight: 700; }

.results-list { display: flex; flex-direction: column; gap: 0.6rem; margin-bottom: 1.25rem; }
.result-row {
  display: flex; align-items: center; justify-content: space-between;
  background: var(--bg-hover); border-radius: var(--radius-sm);
  padding: 0.75rem 1rem; transition: all 0.2s;
}
.result-row:hover { background: rgba(75, 184, 166, 0.12); }
.result-info { display: flex; align-items: center; gap: 0.75rem; }
.result-icon { font-size: 1.4rem; }
.result-label { font-weight: 600; color: var(--text-1); font-size: 0.95rem; }
.result-filename { color: var(--text-3); font-size: 0.8rem; margin-top: 0.15rem; font-family: monospace; }
.result-dl-btn { white-space: nowrap; }

.results-actions { display: flex; justify-content: center; }
.results-actions .btn { font-size: 1rem; padding: 0.7rem 2rem; }

/* ── Download Card (PPTX) ── */
.download-card {
  text-align: center; padding: 1.5rem;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); margin-top: 1rem;
}
.dl-icon { font-size: 2rem; }
.dl-filename { color: var(--text-3); font-size: 0.85rem; margin: 0.5rem 0; font-family: monospace; }

/* ── Offer Lines (Service Lines) ── */
.offer-lines-inline { margin-top: 1rem; padding-top: 0.75rem; border-top: 1px solid var(--border); }
.offer-lines-title { color: var(--text-2); font-size: 0.95rem; margin: 0 0 0.5rem 0; }
.offer-line-row {
  display: flex; align-items: center; gap: 0.5rem; margin-bottom: 0.4rem;
}
.offer-line-row .field-input { flex: 1; }
.offer-line-row .offer-line-remove {
  background: rgba(255,80,80,0.15); color: #ff5050; border: 1px solid rgba(255,80,80,0.3);
  border-radius: 4px; width: 28px; height: 28px; cursor: pointer; font-size: 0.85rem;
  display: flex; align-items: center; justify-content: center; transition: all 0.15s;
}
.offer-line-row .offer-line-remove:hover { background: rgba(255,80,80,0.3); }
.offer-line-add {
  display: flex; align-items: center; gap: 0.5rem; margin-top: 0.5rem;
}
.offer-line-add .field-input { flex: 1; }

/* Product row (first line - battery model) */
.offer-product-row {
  background: rgba(75,184,166,0.06); border: 1px solid rgba(75,184,166,0.25);
  border-radius: 6px; padding: 0.4rem 0.5rem; position: relative;
}
.offer-product-row .product-field {
  font-weight: 600; color: var(--accent);
}
.product-row-badge {
  font-size: 1rem; flex-shrink: 0; width: 24px; text-align: center;
}
.product-row-lock {
  font-size: 0.75rem; opacity: 0.5; flex-shrink: 0; cursor: help;
}
.product-subtotal {
  font-size: 0.78rem; color: var(--text-3); text-align: right;
  padding: 0.15rem 0.5rem 0; min-height: 1.1em;
}
.offer-lines-separator {
  display: flex; align-items: center; gap: 0.5rem;
  margin: 0.6rem 0 0.3rem; font-size: 0.78rem; color: var(--text-3);
}
.offer-lines-separator::before, .offer-lines-separator::after {
  content: ''; flex: 1; height: 1px; background: var(--border);
}
.offer-line-units { flex: 0 0 60px !important; text-align: center; }

/* ── Responsive ── */
@media (max-width: 640px) {
  .upload-zones { grid-template-columns: 1fr; }
  .chart-grid { grid-template-columns: 1fr; }
  .field-row { flex-direction: column; gap: 0.3rem; }
  .field-label { flex: none; }
  .summary-grid { grid-template-columns: 1fr; }
  .generate-buttons { flex-direction: column; }
  .contract-row { flex-direction: column; }
  .milestones-row { flex-direction: column; }
  .result-row { flex-direction: column; gap: 0.5rem; align-items: flex-start; }
}