/* ── Reset & Base ─────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0f1117;
  --bg2: #1a1d27;
  --bg3: #22263a;
  --border: rgba(255,255,255,0.08);
  --accent: #6C63FF;
  --accent2: #a78bfa;
  --green: #10B981;
  --red: #EF4444;
  --yellow: #F59E0B;
  --text: #f1f5f9;
  --text2: #94a3b8;
  --text3: #64748b;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 8px 32px rgba(0,0,0,0.4);
  --font: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

html, body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  -webkit-tap-highlight-color: transparent;
  overscroll-behavior: none;
}

/* ── App Header ───────────────────────────────── */
.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  background: rgba(15,17,23,0.92);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

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

.brand-icon {
  width: 42px; height: 42px;
  background: linear-gradient(135deg, var(--accent), #a78bfa);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
}

.brand-name { display: block; font-size: 16px; font-weight: 700; color: var(--text); }
.brand-sub  { display: block; font-size: 11px; color: var(--text3); }

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

.status-dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--text3);
  box-shadow: 0 0 0 0 var(--text3);
  transition: background .4s;
}
.status-dot.connected {
  background: var(--green);
  animation: pulse-green 2s infinite;
}
.status-dot.disconnected { background: var(--red); }

@keyframes pulse-green {
  0%   { box-shadow: 0 0 0 0 rgba(16,185,129,.6); }
  70%  { box-shadow: 0 0 0 8px rgba(16,185,129,0); }
  100% { box-shadow: 0 0 0 0 rgba(16,185,129,0); }
}

.status-label { font-size: 12px; color: var(--text2); }

/* ── Step Panels ──────────────────────────────── */
.step-panel {
  padding: 20px 16px 120px;
  max-width: 800px;
  margin: 0 auto;
  animation: fadeSlideIn .3s ease;
}
.step-panel.hidden { display: none !important; }

@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

.step-header { margin-bottom: 24px; }

.step-badge {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(108,99,255,.2);
  color: var(--accent2);
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .5px;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.step-header h2 { font-size: 22px; font-weight: 700; margin-bottom: 4px; }
.step-header p  { font-size: 13px; color: var(--text2); }

/* ── Forms ────────────────────────────────────── */
.info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 28px;
}

.form-group.full-width { grid-column: 1 / -1; }

.form-group { display: flex; flex-direction: column; gap: 8px; }

.form-group label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text2);
}

.form-group input,
.form-group textarea,
.form-group select {
  background: var(--bg2);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  padding: 14px 16px;
  outline: none;
  transition: border-color .2s, box-shadow .2s;
  width: 100%;
  resize: vertical;
}

.form-group select {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml;charset=UTF-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 44px;
  cursor: pointer;
}

.form-group select option { background: var(--bg2); color: var(--text); }

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(108,99,255,.2);
}

.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text3); }

/* ── Buttons ──────────────────────────────────── */
.btn-primary {
  width: 100%;
  padding: 16px;
  background: linear-gradient(135deg, var(--accent), #a78bfa);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  font-family: var(--font);
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  transition: opacity .2s, transform .1s;
  letter-spacing: .3px;
}
.btn-primary:active { transform: scale(.98); opacity: .9; }

.btn-back {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--bg2); border: 1px solid var(--border);
  color: var(--text2); padding: 8px 16px; border-radius: 30px;
  font-size: 13px; cursor: pointer; font-family: var(--font);
  margin-bottom: 12px; transition: background .2s;
}
.btn-back:hover { background: var(--bg3); }

.btn-submit {
  width: 100%; padding: 18px;
  background: linear-gradient(135deg, #10B981, #059669);
  color: #fff; border: none; border-radius: var(--radius);
  font-family: var(--font); font-size: 17px; font-weight: 700;
  cursor: pointer; transition: opacity .2s, transform .1s;
  margin-top: 20px;
}
.btn-submit:active { transform: scale(.98); opacity: .9; }
.btn-submit:disabled { opacity: .5; cursor: not-allowed; transform: none; }

/* ── Product Search Bar ───────────────────────── */
.product-search-bar { margin-bottom: 12px; }

.product-search-bar input {
  width: 100%;
  background: var(--bg2);
  border: 1.5px solid var(--border);
  border-radius: 30px;
  color: var(--text);
  font-family: var(--font);
  font-size: 14px;
  padding: 12px 18px;
  outline: none;
  transition: border-color .2s, box-shadow .2s;
}
.product-search-bar input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(108,99,255,.2);
}
.product-search-bar input::placeholder { color: var(--text3); }

/* ── Cart Bar ─────────────────────────────────── */
.cart-bar {
  display: flex; align-items: center; justify-content: space-between;
  background: rgba(108,99,255,.15);
  border: 1px solid rgba(108,99,255,.3);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  margin-bottom: 16px;
}

.cart-count-label { font-size: 14px; color: var(--text2); }
.cart-count-label strong { color: var(--accent2); font-size: 16px; }

.btn-cart {
  background: var(--accent); color: #fff;
  border: none; border-radius: 30px;
  padding: 8px 18px; font-size: 13px; font-weight: 600;
  cursor: pointer; font-family: var(--font); transition: opacity .2s;
}
.btn-cart:active { opacity: .8; }

/* ── Category Tabs ────────────────────────────── */
.category-tabs {
  display: flex; gap: 8px; overflow-x: auto;
  padding-bottom: 12px; margin-bottom: 16px;
  scrollbar-width: none;
}
.category-tabs::-webkit-scrollbar { display: none; }

.cat-tab {
  flex-shrink: 0;
  display: flex; align-items: center; gap: 6px;
  padding: 9px 16px;
  background: var(--bg2);
  border: 1.5px solid var(--border);
  border-radius: 30px;
  font-size: 13px; font-weight: 500; color: var(--text2);
  cursor: pointer; font-family: var(--font);
  transition: all .2s;
  white-space: nowrap;
}
.cat-tab:hover  { border-color: var(--accent); color: var(--text); }
.cat-tab.active {
  background: rgba(108,99,255,.2);
  border-color: var(--accent);
  color: var(--accent2);
  font-weight: 600;
}
.cat-tab .cat-icon { font-size: 16px; }

/* ── Product Grid ─────────────────────────────── */
.product-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.product-card {
  background: var(--bg2);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  cursor: pointer;
  transition: all .2s;
  position: relative;
  overflow: hidden;
}
.product-card:hover  { border-color: var(--accent); transform: translateY(-2px); }
.product-card:active { transform: scale(.97); }
.product-card.in-cart {
  border-color: var(--green);
  background: rgba(16,185,129,.07);
}

.product-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  opacity: 0; transition: opacity .2s;
}
.product-card:hover::before,
.product-card.in-cart::before { opacity: 1; }

.product-card-code {
  font-size: 10px; font-weight: 700; letter-spacing: 1px;
  color: var(--text3); margin-bottom: 6px; font-family: 'Courier New', monospace;
}

.product-card-name {
  font-size: 14px; font-weight: 600; color: var(--text);
  line-height: 1.4; margin-bottom: 8px;
}

.product-card-unit {
  font-size: 11px; color: var(--text3); margin-bottom: 10px;
}

.product-card-price {
  font-size: 13px; font-weight: 700; color: var(--accent2);
}

.product-card-badge {
  position: absolute; top: 10px; right: 10px;
  background: var(--green);
  color: #fff; border-radius: 20px;
  padding: 3px 9px; font-size: 11px; font-weight: 700;
  display: none;
}
.product-card.in-cart .product-card-badge { display: block; }

/* ── Cart Items ───────────────────────────────── */
.order-summary-box {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px; margin-bottom: 20px;
}

.summary-row {
  display: flex; justify-content: space-between;
  padding: 6px 0; font-size: 14px; color: var(--text2);
  border-bottom: 1px solid var(--border);
}
.summary-row:last-child { border-bottom: none; }
.summary-row strong { color: var(--text); text-align: right; max-width: 60%; }

.cart-items-list { display: flex; flex-direction: column; gap: 10px; margin-bottom: 20px; }

.cart-item {
  display: flex; align-items: center; gap: 12px;
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 14px;
}

.cart-item-info { flex: 1; }
.cart-item-code  { font-size: 10px; font-weight: 700; letter-spacing: 1px; color: var(--text3); font-family: monospace; }
.cart-item-name  { font-size: 14px; font-weight: 600; margin: 2px 0; }
.cart-item-unit  { font-size: 12px; color: var(--text3); }
.cart-item-qty   {
  background: rgba(108,99,255,.2); border: 1px solid rgba(108,99,255,.3);
  color: var(--accent2); border-radius: 8px;
  padding: 6px 14px; font-size: 15px; font-weight: 700;
  text-align: center; min-width: 60px;
}
.cart-item-subtotal { font-size: 13px; font-weight: 700; color: var(--green); text-align: right; white-space: nowrap; }
.btn-remove-item {
  background: rgba(239,68,68,.15); border: 1px solid rgba(239,68,68,.3);
  color: var(--red); border-radius: 8px; padding: 8px 10px;
  font-size: 16px; cursor: pointer; transition: background .2s;
  flex-shrink: 0;
}
.btn-remove-item:hover { background: rgba(239,68,68,.3); }

.cart-empty {
  text-align: center; padding: 40px 20px; color: var(--text3); font-size: 14px;
}

.order-total-box {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px; margin-bottom: 20px;
}
.total-row {
  display: flex; justify-content: space-between;
  padding: 6px 0; font-size: 14px; color: var(--text2);
}
.total-row.grand { padding-top: 12px; border-top: 1px solid var(--border); margin-top: 6px; }
.total-row.grand span { font-size: 15px; font-weight: 600; color: var(--text); }
.total-row.grand strong { font-size: 18px; font-weight: 800; color: var(--green); }

/* ── Price Tier Selection (Qty Modal) ─────────── */
.price-tier-label {
  font-size: 12px; font-weight: 600; color: var(--text2);
  margin-bottom: 8px;
}

.price-tier-list {
  display: flex; flex-direction: column; gap: 8px;
  margin-bottom: 14px;
}

.price-tier-btn {
  display: flex; align-items: center; justify-content: space-between;
  background: var(--bg3);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  cursor: pointer; font-family: var(--font);
  color: var(--text2);
  transition: all .15s;
  -webkit-tap-highlight-color: transparent;
}
.price-tier-btn:active { transform: scale(.98); }
.price-tier-btn.active {
  border-color: var(--green);
  background: rgba(16,185,129,.12);
  color: var(--text);
}
.price-tier-btn .tier-unit  { font-size: 13px; font-weight: 600; }
.price-tier-btn .tier-price { font-size: 15px; font-weight: 800; color: var(--accent2); }
.price-tier-btn.active .tier-price { color: var(--green); }

.ppn-note {
  margin-top: 10px;
  font-size: 11px;
  color: var(--text3);
  text-align: right;
}

/* ── QTY Modal ────────────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(0,0,0,.7); backdrop-filter: blur(8px);
  display: flex; align-items: flex-end; justify-content: center;
  animation: fadeIn .2s ease;
}
.modal-overlay.hidden { display: none !important; }

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.modal-box {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 24px 24px 0 0;
  padding: 28px 24px 40px;
  width: 100%; max-width: 480px;
  animation: slideUp .25s ease;
  position: relative;
}
@keyframes slideUp {
  from { transform: translateY(100%); }
  to   { transform: translateY(0); }
}

.modal-close {
  position: absolute; top: 16px; right: 16px;
  background: var(--bg3); border: none; color: var(--text2);
  width: 32px; height: 32px; border-radius: 50%;
  font-size: 16px; cursor: pointer;
}

.modal-product-code  { font-size: 11px; font-weight: 700; letter-spacing: 1.5px; color: var(--text3); font-family: monospace; margin-bottom: 6px; }
.modal-product-name  { font-size: 20px; font-weight: 700; margin-bottom: 4px; }
.modal-product-unit  { font-size: 13px; color: var(--text2); margin-bottom: 4px; }
.modal-product-price { font-size: 16px; font-weight: 700; color: var(--accent2); margin-bottom: 24px; }

.qty-control {
  display: flex; align-items: center; justify-content: center; gap: 16px;
  margin-bottom: 28px;
}

.qty-btn {
  width: 54px; height: 54px;
  background: var(--bg3); border: 1.5px solid var(--border);
  color: var(--text); font-size: 26px; border-radius: 14px;
  cursor: pointer; font-family: var(--font);
  display: flex; align-items: center; justify-content: center;
  transition: background .2s;
  -webkit-tap-highlight-color: transparent;
}
.qty-btn:active { background: var(--accent); color: #fff; }
.qty-btn.minus:active { background: var(--red); }

.qty-input {
  width: 90px; text-align: center;
  background: var(--bg3); border: 1.5px solid var(--accent);
  color: var(--text); font-size: 28px; font-weight: 700;
  border-radius: 14px; padding: 10px; font-family: var(--font);
}
.qty-input::-webkit-inner-spin-button,
.qty-input::-webkit-outer-spin-button { -webkit-appearance: none; }

.modal-actions { display: grid; grid-template-columns: 1fr 2fr; gap: 12px; }

.btn-modal-cancel {
  background: var(--bg3); border: 1px solid var(--border);
  color: var(--text2); padding: 14px; border-radius: var(--radius-sm);
  font-size: 14px; cursor: pointer; font-family: var(--font);
}
.btn-modal-add {
  background: linear-gradient(135deg, var(--accent), #a78bfa);
  color: #fff; border: none; padding: 14px;
  border-radius: var(--radius-sm); font-size: 15px; font-weight: 700;
  cursor: pointer; font-family: var(--font); transition: opacity .2s;
}
.btn-modal-add:active { opacity: .85; }

/* ── Success Screen ───────────────────────────── */
.success-screen {
  display: flex; flex-direction: column; align-items: center;
  justify-content: center; text-align: center;
  min-height: 70vh; gap: 16px; padding: 20px;
}
.success-icon { font-size: 80px; animation: bounceIn .5s ease; }
@keyframes bounceIn {
  0%   { transform: scale(0); opacity: 0; }
  60%  { transform: scale(1.15); }
  100% { transform: scale(1); opacity: 1; }
}
.success-screen h2   { font-size: 28px; font-weight: 800; }
.success-order-id    { font-size: 18px; font-weight: 700; color: var(--accent2); font-family: monospace; }
.success-msg         { font-size: 14px; color: var(--text2); line-height: 1.7; }

/* ── Responsive ───────────────────────────────── */
@media (min-width: 600px) {
  .product-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 480px) {
  .info-grid { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: 1fr 1fr; }
}