:root {
  --bg: #f2f6fb;
  --panel: #ffffff;
  --text: #101523;
  --muted: #5c6475;
  --accent: #004aac;
  --accent-2: #e6f0ff;
  --border: #d6e0f0;
  --glow: rgba(0, 74, 172, 0.12);
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.08);
  --radius: 16px;
  --font: "Poppins", "Verdana", sans-serif;
  --sans: "Poppins", "Verdana", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--sans);
  background:
    radial-gradient(circle at top right, rgba(0, 74, 172, 0.12), transparent 45%),
    radial-gradient(circle at 10% 20%, rgba(0, 74, 172, 0.08), transparent 40%),
    linear-gradient(130deg, #f2f6fb 0%, #eef3fb 45%, #f7f9fd 100%);
  color: var(--text);
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 28px;
  background: var(--accent);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-logo {
  width: 120px;
  height: 44px;
  object-fit: contain;
  filter: brightness(0) invert(1);
}


.actions {
  display: flex;
  gap: 12px;
}

.mobile-actions {
  display: none;
  padding: 16px 28px 28px;
  gap: 12px;
}

.mobile-actions .btn {
  width: 100%;
}

.btn {
  padding: 10px 16px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: #ffffff;
  cursor: pointer;
  font-weight: 600;
  color: var(--text);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-primary {
  background: #ffffff;
  border-color: #ffffff;
  color: var(--accent);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}

.topbar .actions .btn {
  border-color: rgba(255, 255, 255, 0.35);
}

.topbar .actions .btn-primary {
  border-color: #ffffff;
  color: #fff;
  background: #ffffff;
  color: var(--accent);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.18);
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.08);
}

.btn-outline {
  background: transparent;
}

.layout {
  display: grid;
  grid-template-columns: minmax(420px, 520px) minmax(0, 1fr);
  gap: 24px;
  padding: 24px 28px 32px;
}

.panel {
  background: var(--panel);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.form-panel {
  background: linear-gradient(180deg, #ffffff 0%, #f7faff 100%);
}

.form-panel h1 {
  margin-top: 0;
  font-family: var(--font);
}

.tips {
  margin: 6px 0 16px;
  padding: 12px 14px;
  border-radius: 12px;
  background: rgba(0, 74, 172, 0.08);
  border: 1px solid rgba(0, 74, 172, 0.15);
}

.tips-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--accent);
}

.tips-sub {
  font-size: 12px;
  color: var(--muted);
  margin-top: 4px;
}

.field-row,
.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 14px;
}


.field-row label,
.field label {
  font-weight: 600;
  color: var(--muted);
}

input,
select,
textarea {
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  font-family: var(--sans);
}

input[type="color"] {
  padding: 0;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  border: 1px solid var(--border);
  cursor: pointer;
}

input[type="color"]::-webkit-color-swatch-wrapper {
  padding: 0;
}

input[type="color"]::-webkit-color-swatch {
  border: none;
  border-radius: 6px;
}

textarea {
  min-height: 90px;
  resize: vertical;
}

.grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid.two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.totals {
  margin-top: 8px;
}

.is-hidden {
  display: none;
}

.design-options h2 {
  margin-top: 6px;
}

.item-row {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr) minmax(0, 1fr) auto;
  gap: 10px;
  align-items: end;
  margin-bottom: 12px;
}

.remove-item {
  height: 40px;
  align-self: end;
}

.preview-panel {
  min-height: 80vh;
  position: sticky;
  top: 88px;
  align-self: start;
}

.invoice {
  background: #fff;
  border-radius: 18px;
  padding: 22px;
  border: 1px solid var(--border);
  font-family: var(--font);
  max-width: 780px;
  margin: 0 auto;
  transform: scale(0.9);
  transform-origin: top center;
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.08);
}

.invoice-head {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 18px;
}

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

#logoPreview {
  width: 72px;
  height: 72px;
  object-fit: contain;
  border-radius: 10px;
  border: none;
  padding: 0;
}

.company-name {
  font-size: 20px;
  font-weight: 700;
}

.company-details {
  color: var(--muted);
  white-space: pre-line;
}

.invoice-meta {
  text-align: right;
}

.invoice-meta .title {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--header-title-color, var(--text));
}

.meta-row {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  font-family: var(--sans);
  color: var(--muted);
}

.invoice-body {
  padding: 18px 0;
}

.bill-to .label {
  font-weight: 700;
  color: var(--muted);
}

.to-rest {
  white-space: pre-line;
}

.items-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 14px;
  font-family: var(--sans);
}

.items-table th,
.items-table td {
  padding: 10px;
  border-bottom: 1px solid var(--border);
}

.items-table th {
  text-align: left;
  font-size: 12px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: var(--table-header-bg, #f2efe9);
}

.summary {
  margin-top: 18px;
  max-width: 260px;
  margin-left: auto;
  font-family: var(--sans);
}

.summary .row {
  display: flex;
  justify-content: space-between;
  padding: 6px 0;
  border-bottom: 1px dashed var(--border);
}

.summary .row.total {
  font-size: 18px;
  border-bottom: none;
  margin-top: 6px;
  color: var(--accent);
}

.invoice-footer {
  border-top: 1px solid var(--border);
  padding-top: 14px;
  color: var(--muted);
  font-family: var(--sans);
}

/* Template variations */
.template-modern {
  --accent: #0b6e4f;
  --accent-2: #e7f9f2;
  background: #f8fffb;
  border: 2px solid #0b6e4f;
}

.template-modern .invoice-meta .title {
  color: var(--accent);
}

.template-modern .items-table th {
  color: var(--accent);
}

.template-minimal {
  font-family: var(--sans);
  border: 1px solid #111;
  background: #fff;
}

.template-minimal .invoice-meta .title {
  font-family: var(--sans);
  text-transform: uppercase;
  letter-spacing: 0.15em;
}

.template-minimal .items-table th {
  color: #111;
}


@media (max-width: 980px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .preview-panel {
    min-height: auto;
  }

  .invoice {
    transform: none;
  }

  .topbar .actions {
    display: none;
  }

  .mobile-actions {
    display: grid;
  }
}