/* ============================================================
   APP UI — two-panel layout (form + live preview)
   ============================================================ */

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

:root {
  --navy: #0F172A;
  --navy-light: #1E293B;
  --amber: #E8913A;
  --gray-50: #F8FAFC;
  --gray-100: #F1F5F9;
  --gray-200: #E2E8F0;
  --gray-400: #94A3B8;
  --gray-600: #475569;
  --gray-900: #0F172A;
  --radius: 6px;
  --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-lg: 0 4px 24px rgba(0,0,0,0.12);
}

body {
  font-family: 'DM Sans', system-ui, sans-serif;
  background: var(--gray-100);
  color: var(--gray-900);
  height: 100vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

/* ── HEADER BAR ──────────────────────────────────────────── */
#app-header {
  background: var(--navy);
  color: #fff;
  padding: 0 20px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
  z-index: 10;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 8px;
}

.header-wordmark {
  font-family: 'Instrument Serif', Georgia, serif;
  font-size: 20px;
  font-weight: 400;
  letter-spacing: -0.02em;
  color: #fff;
  line-height: 1;
}

.header-divider {
  color: rgba(255,255,255,0.25);
  font-size: 14px;
  font-weight: 300;
  margin: 0 2px;
}

.header-product {
  font-size: 13px;
  font-weight: 500;
  color: rgba(255,255,255,0.6);
  letter-spacing: 0.01em;
}

#app-header .header-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ── MAIN LAYOUT ─────────────────────────────────────────── */
#app-body {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* ── FORM PANEL ──────────────────────────────────────────── */
#form-panel {
  width: 360px;
  flex-shrink: 0;
  background: #fff;
  border-right: 1px solid var(--gray-200);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* Tabs */
.form-tabs {
  display: flex;
  border-bottom: 1px solid var(--gray-200);
  background: var(--gray-50);
  flex-shrink: 0;
}

.tab-btn {
  flex: 1;
  padding: 10px 4px;
  border: none;
  background: none;
  font-size: 13px;
  font-weight: 500;
  color: var(--gray-600);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: color 0.15s, border-color 0.15s;
  font-family: inherit;
}

.tab-btn:hover {
  color: var(--navy);
}

.tab-btn.active {
  color: var(--amber);
  border-bottom-color: var(--amber);
  font-weight: 600;
}

/* Tab panels */
.tab-panel {
  display: none;
  flex: 1;
  overflow-y: auto;
  padding: 16px;
}

.tab-panel.active {
  display: block;
}

/* Form sections */
.form-section {
  margin-bottom: 20px;
}

.form-section-title {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--gray-400);
  margin-bottom: 10px;
}

/* Form rows */
.form-row {
  margin-bottom: 12px;
}

.form-row label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--gray-600);
  margin-bottom: 4px;
}

.form-row input[type="text"],
.form-row input[type="number"],
.form-row input[type="email"],
.form-row input[type="tel"],
.form-row input[type="url"],
.form-row select,
.form-row textarea {
  width: 100%;
  padding: 7px 10px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  font-size: 14px;
  font-family: inherit;
  color: var(--gray-900);
  background: #fff;
  transition: border-color 0.15s;
  outline: none;
}

.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
  border-color: var(--amber);
  box-shadow: 0 0 0 2px rgba(232,145,58,0.12);
}

.form-row textarea {
  resize: vertical;
  min-height: 90px;
  font-size: 13px;
  line-height: 1.6;
}

/* Three-column input row (for down payment %s) */
.input-row-3 {
  display: flex;
  gap: 8px;
}

.input-row-3 input {
  flex: 1;
  text-align: center;
}

/* Two-column input row */
.input-row-2 {
  display: flex;
  gap: 8px;
}

.input-row-2 .form-row {
  flex: 1;
  margin-bottom: 0;
}

/* Upload fields */
.upload-label {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 10px;
  border: 1px dashed var(--gray-200);
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 13px;
  color: var(--gray-600);
  transition: border-color 0.15s, background 0.15s;
  background: var(--gray-50);
}

.upload-label:hover {
  border-color: var(--amber);
  background: #fff;
}

.upload-label svg {
  flex-shrink: 0;
  opacity: 0.5;
}

.upload-label input[type="file"] {
  display: none;
}

/* Upload preview thumbnails */
.upload-thumb-row {
  display: flex;
  gap: 8px;
  margin-top: 6px;
}

.upload-thumb {
  position: relative;
  width: 60px;
  height: 48px;
  border-radius: 4px;
  overflow: hidden;
  background: var(--gray-100);
  border: 1px solid var(--gray-200);
  display: none;
}

.upload-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Toggle / checkbox */
.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 0;
}

.toggle-row label {
  font-size: 13px;
  font-weight: 500;
  color: var(--gray-600);
}

input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--amber);
  cursor: pointer;
}

/* Color picker row */
.color-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.color-row label {
  font-size: 13px;
  font-weight: 500;
  color: var(--gray-600);
  flex: 1;
}

input[type="color"] {
  width: 36px;
  height: 28px;
  padding: 1px 2px;
  border: 1px solid var(--gray-200);
  border-radius: 4px;
  cursor: pointer;
  background: none;
}

/* Help text */
.form-hint {
  font-size: 12px;
  color: var(--gray-400);
  margin-top: 4px;
  line-height: 1.4;
}

/* ── BUTTONS ─────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  border: none;
  transition: background 0.15s, opacity 0.15s;
}

.btn-primary {
  background: var(--amber);
  color: #fff;
}

.btn-primary:hover {
  background: #d4802c;
}

.btn-ghost {
  background: rgba(255,255,255,0.1);
  color: #fff;
  border: 1px solid rgba(255,255,255,0.2);
}

.btn-ghost:hover {
  background: rgba(255,255,255,0.18);
}

.btn-outline {
  background: transparent;
  color: var(--gray-600);
  border: 1px solid var(--gray-200);
}

.btn-outline:hover {
  border-color: var(--gray-400);
  color: var(--gray-900);
}

.btn-sm {
  padding: 6px 10px;
  font-size: 12px;
}

/* ── PREVIEW PANEL ───────────────────────────────────────── */
#preview-panel {
  flex: 1;
  overflow-y: auto;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 24px;
  background: var(--gray-100);
}

.preview-frame {
  background: #fff;
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 700px;
  border-radius: 2px;
}

/* ── DIVIDER ─────────────────────────────────────────────── */
.divider {
  height: 1px;
  background: var(--gray-200);
  margin: 16px 0;
}

/* ── SCROLLBAR ───────────────────────────────────────────── */
.tab-panel::-webkit-scrollbar {
  width: 4px;
}
.tab-panel::-webkit-scrollbar-track {
  background: transparent;
}
.tab-panel::-webkit-scrollbar-thumb {
  background: var(--gray-200);
  border-radius: 4px;
}

/* ── PRINT: hide everything except sheet ─────────────────── */
@media print {
  body {
    background: white;
    height: auto;
    overflow: visible;
  }
  #app-header,
  #form-panel {
    display: none !important;
  }
  #app-body,
  #preview-panel {
    display: block !important;
    overflow: visible !important;
    padding: 0 !important;
    background: white !important;
  }
  .preview-frame {
    box-shadow: none !important;
    max-width: none !important;
    border-radius: 0 !important;
  }
}

/* ── PROJECTS ────────────────────────────────────────────── */
.btn-full {
  width: 100%;
  justify-content: center;
  margin-top: 4px;
}

.projects-empty {
  text-align: center;
  padding: 20px 0 8px;
}

.project-card {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 13px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  margin-bottom: 8px;
  background: var(--gray-50);
  transition: border-color 0.15s, background 0.15s;
}

.project-card:hover {
  border-color: var(--gray-400);
  background: #fff;
}

.project-card-info {
  flex: 1;
  min-width: 0;
}

.project-card-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-900);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.project-card-meta {
  font-size: 11px;
  color: var(--gray-400);
  margin-top: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.project-card-actions {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
}