/* ========================================================================
   Calculator Chi Phí Gia Công TPCN - Đông Giao OEM/ODM
   Brand colors: Navy #0A1628 + Gold #C8963E
   Fonts: Playfair Display (headings) + Inter (body)
   ======================================================================== */

:root {
  --dg-navy: #0A1628;
  --dg-navy-light: #1a2845;
  --dg-gold: #C8963E;
  --dg-gold-dark: #a87b29;
  --dg-cream: #FAF7F0;
  --dg-gray: #E5E7EB;
  --dg-text: #1F2937;
  --dg-text-light: #6B7280;
  --dg-success: #10B981;
  --dg-shadow: 0 2px 8px rgba(10, 22, 40, 0.08);
  --dg-shadow-lg: 0 8px 24px rgba(10, 22, 40, 0.12);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--dg-text);
  background: var(--dg-cream);
  line-height: 1.6;
  padding: 20px;
}

.dg-container {
  max-width: 900px;
  margin: 0 auto;
  background: #fff;
  border-radius: 16px;
  box-shadow: var(--dg-shadow-lg);
  overflow: hidden;
}

/* HEADER */
.dg-header {
  background: linear-gradient(135deg, var(--dg-navy) 0%, var(--dg-navy-light) 100%);
  color: #fff;
  padding: 40px 30px;
  text-align: center;
  border-bottom: 4px solid var(--dg-gold);
}

.dg-logo {
  height: 48px;
  margin-bottom: 16px;
  filter: brightness(1.1);
}

.dg-brand {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 4px;
  color: var(--dg-gold);
  margin-bottom: 12px;
  opacity: 0.9;
}

.dg-header h1 {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--dg-gold);
}

.dg-subtitle {
  font-size: 0.95rem;
  opacity: 0.85;
}

/* FORM */
.dg-form {
  padding: 30px;
}

.dg-step {
  border: none;
  margin-bottom: 28px;
  padding: 20px;
  background: var(--dg-cream);
  border-radius: 12px;
  border-left: 4px solid var(--dg-gold);
}

.dg-step legend {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--dg-navy);
  padding: 0 8px;
  display: flex;
  align-items: center;
  margin-left: -8px;
  margin-bottom: 16px;
}

.dg-step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--dg-gold);
  color: #fff;
  border-radius: 50%;
  font-size: 0.95rem;
  margin-right: 12px;
  font-family: 'Inter', sans-serif;
}

/* OPTIONS GRID */
.dg-options-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}

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

.dg-option {
  display: block;
  cursor: pointer;
  position: relative;
}

.dg-option input[type="radio"] {
  position: absolute;
  opacity: 0;
}

.dg-option-content {
  display: flex;
  flex-direction: column;
  padding: 16px;
  background: #fff;
  border: 2px solid var(--dg-gray);
  border-radius: 10px;
  transition: all 0.2s ease;
}

.dg-option-content strong {
  font-size: 0.95rem;
  color: var(--dg-navy);
  margin-bottom: 4px;
}

.dg-option-content small {
  font-size: 0.8rem;
  color: var(--dg-text-light);
}

.dg-option:hover .dg-option-content {
  border-color: var(--dg-gold);
  transform: translateY(-2px);
  box-shadow: var(--dg-shadow);
}

.dg-option input[type="radio"]:checked + .dg-option-content {
  border-color: var(--dg-gold);
  background: #fff9ed;
  box-shadow: 0 0 0 3px rgba(200, 150, 62, 0.15);
}

/* PRICE TAGS */
.dg-price-tag {
  display: inline-block;
  margin-top: 8px;
  padding: 3px 10px;
  background: #e0f2e9;
  color: var(--dg-success);
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 4px;
  width: fit-content;
}

.dg-price-mid { background: #fff4d4; color: #b87a00; }
.dg-price-premium { background: #fce4e4; color: #c0392b; }

/* SELECT */
.dg-select {
  width: 100%;
  padding: 12px 16px;
  font-size: 1rem;
  font-family: inherit;
  border: 2px solid var(--dg-gray);
  border-radius: 10px;
  background: #fff;
  cursor: pointer;
  transition: border-color 0.2s;
}

.dg-select:focus {
  outline: none;
  border-color: var(--dg-gold);
}

/* INPUT NUMBER */
.dg-input {
  width: 200px;
  padding: 12px 16px;
  font-size: 1rem;
  font-family: inherit;
  border: 2px solid var(--dg-gray);
  border-radius: 10px;
  text-align: center;
}

.dg-input:focus {
  outline: none;
  border-color: var(--dg-gold);
}

.dg-hint {
  display: block;
  margin-top: 6px;
  color: var(--dg-text-light);
  font-size: 0.8rem;
}

/* MOQ SLIDER */
#dg-moq-slider {
  width: 100%;
  height: 8px;
  border-radius: 4px;
  background: var(--dg-gray);
  outline: none;
  -webkit-appearance: none;
  margin: 20px 0 8px;
}

#dg-moq-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--dg-gold);
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(200, 150, 62, 0.4);
}

#dg-moq-slider::-moz-range-thumb {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--dg-gold);
  cursor: pointer;
  border: none;
}

.dg-moq-display {
  text-align: center;
  font-family: 'Playfair Display', serif;
  font-size: 2rem;
  color: var(--dg-navy);
  font-weight: 700;
  padding: 16px 0;
}

.dg-moq-display span { color: var(--dg-gold); }

.dg-moq-marks {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--dg-text-light);
  margin-top: -4px;
}

/* BUTTONS */
.dg-btn-primary {
  display: block;
  width: 100%;
  padding: 16px 32px;
  font-size: 1.1rem;
  font-weight: 700;
  font-family: inherit;
  color: #fff;
  background: linear-gradient(135deg, var(--dg-gold) 0%, var(--dg-gold-dark) 100%);
  border: none;
  border-radius: 12px;
  cursor: pointer;
  text-align: center;
  text-decoration: none;
  transition: all 0.2s ease;
  margin-top: 20px;
  letter-spacing: 0.3px;
}

.dg-btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 16px rgba(200, 150, 62, 0.35);
}

.dg-btn-secondary {
  display: inline-block;
  margin-top: 20px;
  padding: 12px 24px;
  background: transparent;
  color: var(--dg-navy);
  border: 2px solid var(--dg-navy);
  border-radius: 10px;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  transition: all 0.2s;
}

.dg-btn-secondary:hover {
  background: var(--dg-navy);
  color: #fff;
}

/* RESULT */
.dg-result {
  padding: 30px;
  background: var(--dg-navy);
  color: #fff;
}

.dg-result h2 {
  font-family: 'Playfair Display', serif;
  font-size: 1.8rem;
  color: var(--dg-gold);
  margin-bottom: 24px;
  text-align: center;
}

.dg-result h3 {
  font-family: 'Playfair Display', serif;
  font-size: 1.2rem;
  color: var(--dg-gold);
  margin: 28px 0 12px;
}

.dg-result-summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.dg-result-card {
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(10px);
  padding: 20px;
  border-radius: 12px;
  border: 1px solid rgba(200, 150, 62, 0.3);
  text-align: center;
}

.dg-result-label {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.dg-result-value {
  font-family: 'Playfair Display', serif;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--dg-gold);
}

.dg-breakdown-table {
  width: 100%;
  border-collapse: collapse;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 10px;
  overflow: hidden;
}

.dg-breakdown-table th,
.dg-breakdown-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.dg-breakdown-table th {
  background: rgba(200, 150, 62, 0.2);
  color: var(--dg-gold);
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.dg-breakdown-table tr:last-child td { border-bottom: none; }

.dg-result-note {
  background: rgba(255, 193, 7, 0.1);
  border-left: 4px solid #FFC107;
  padding: 16px;
  border-radius: 8px;
  margin: 24px 0;
  font-size: 0.9rem;
}

.dg-cta-box {
  background: linear-gradient(135deg, var(--dg-gold) 0%, var(--dg-gold-dark) 100%);
  color: #fff;
  padding: 32px;
  border-radius: 12px;
  text-align: center;
  margin-top: 24px;
}

.dg-cta-box h3 {
  color: #fff;
  font-size: 1.4rem;
  margin-bottom: 8px;
}

.dg-cta-box p {
  margin-bottom: 16px;
  opacity: 0.95;
}

.dg-cta-box .dg-btn-primary {
  background: #fff;
  color: var(--dg-navy);
  max-width: 300px;
  margin: 0 auto;
}

.dg-cta-box .dg-btn-primary:hover {
  background: var(--dg-navy);
  color: #fff;
}

.dg-contact-info {
  margin-top: 20px;
  font-size: 1rem;
  opacity: 0.95;
}

.dg-contact-info strong { font-size: 1.1rem; }

/* RESPONSIVE */
@media (max-width: 640px) {
  body { padding: 10px; }
  .dg-header { padding: 24px 20px; }
  .dg-header h1 { font-size: 1.5rem; }
  .dg-form, .dg-result { padding: 20px; }
  .dg-step { padding: 16px; }
  .dg-options-grid, .dg-tier-grid { grid-template-columns: 1fr; }
  .dg-result-summary { grid-template-columns: 1fr; }
  .dg-result-card { padding: 16px; }
}