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

:root {
  --bg: #0a0810;
  --bg-elevated: #141020;
  --bg-input: #1a1528;
  --text: #eae0cd;
  --text-dim: #7a7282;
  --accent: #673de6;
  --accent-glow: rgba(103, 61, 230, 0.2);
  --accent-hover: #7b52f0;
  --accent-cyan: #00c9db;
  --accent-red: #fc5185;
  --accent-orange: #f5841f;
  --border: rgba(103, 61, 230, 0.12);
  --border-hover: rgba(103, 61, 230, 0.3);
  --surface-glow: rgba(103, 61, 230, 0.08);
  --radius: 12px;
  --success: #4caf50;
  --error: #e74c3c;
  --scanline: rgba(103, 61, 230, 0.08);
  --accent-yellow: #ffcd35;
}

@property --border-angle {
  syntax: '<angle>';
  initial-value: 0deg;
  inherits: false;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Rajdhani', system-ui, sans-serif;
  font-weight: 400;
  min-height: 100vh;
  line-height: 1.6;
  overflow-x: hidden;
}

/* ── Noise / VHS Grain Overlay ── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  opacity: 0.06;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='5' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 200px 200px;
}

/* ── Scanline Overlay ── */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 9998;
  pointer-events: none;
  opacity: 0.03;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    var(--scanline) 2px,
    var(--scanline) 4px
  );
}

h1, h2, h3, h4 {
  font-family: 'Exo 2', sans-serif;
  font-weight: 700;
  line-height: 1.1;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

a { color: var(--accent-cyan); text-decoration: none; }
a:hover { color: var(--accent-hover); }

/* ── Auth Page ── */
.auth-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 24px;
}

.auth-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 48px 40px;
  width: 100%;
  max-width: 420px;
}

.auth-card h1 {
  font-size: 1.8rem;
  text-align: center;
  margin-bottom: 8px;
}

.auth-card .subtitle {
  text-align: center;
  color: var(--text-dim);
  font-size: 0.95rem;
  margin-bottom: 32px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 6px;
}

.form-group input {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-family: inherit;
  font-size: 1rem;
  outline: none;
  transition: border-color 0.2s;
}

.form-group input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 12px var(--accent-glow);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s, box-shadow 0.2s;
}

.btn:active { transform: scale(0.97); }

.btn-primary {
  background: var(--accent);
  color: #fff;
  width: 100%;
}
.btn-primary:hover {
  background: var(--accent-hover);
  box-shadow: 0 0 20px var(--accent-glow);
}

.btn-action {
  position: relative;
  background: var(--bg-input);
  color: var(--text);
  border: 2px solid transparent;
  width: 100%;
  padding: 16px 24px;
  font-size: 1rem;
  overflow: visible;
}
.btn-action::after {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: 6px;
  padding: 2px;
  background: conic-gradient(
    from var(--border-angle),
    var(--accent-cyan),
    var(--accent) 30%,
    var(--accent-yellow) 50%,
    var(--accent-orange) 65%,
    var(--accent-red) 80%,
    var(--accent-cyan)
  );
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0.5;
  z-index: 1;
  pointer-events: none;
  animation: borderSpin 4s linear infinite;
}
.btn-action:hover::after {
  opacity: 1;
}
.btn-action:hover {
  background: rgba(103, 61, 230, 0.08);
  color: var(--accent-cyan);
  box-shadow: 0 0 20px var(--accent-glow);
}

.btn-action.active {
  background: rgba(103, 61, 230, 0.08);
  color: var(--accent-cyan);
  box-shadow: 0 0 20px var(--accent-glow);
}
.btn-action.active::after {
  opacity: 1;
}

@keyframes borderSpin {
  to { --border-angle: 360deg; }
}

.auth-toggle {
  text-align: center;
  margin-top: 24px;
  color: var(--text-dim);
  font-size: 0.9rem;
}

.auth-error {
  background: rgba(231, 76, 60, 0.1);
  border: 1px solid var(--error);
  border-radius: 6px;
  padding: 12px 16px;
  color: var(--error);
  font-size: 0.9rem;
  margin-bottom: 20px;
  display: none;
}

/* ── App Layout ── */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 32px;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
}

.app-header h1 {
  font-size: 1.3rem;
}

.app-header .user-info {
  display: flex;
  align-items: center;
  gap: 16px;
  color: var(--text-dim);
  font-size: 0.9rem;
}

.btn-logout {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-dim);
  padding: 6px 16px;
  font-size: 0.8rem;
  border-radius: 6px;
  cursor: pointer;
  font-family: inherit;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: all 0.2s;
}
.btn-logout:hover {
  border-color: var(--accent-red);
  color: var(--accent-red);
}

/* ── Tabs ── */
.tabs-container {
  max-width: 900px;
  margin: 40px auto;
  padding: 0 24px;
}

.tab-bar {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 32px;
}

.tab-btn {
  padding: 12px 24px;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-dim);
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.2s;
}

.tab-btn:hover { color: var(--text); }
.tab-btn.active {
  color: var(--accent-cyan);
  border-bottom-color: var(--accent-cyan);
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

.tab-panel h2 {
  font-size: 1.4rem;
  margin-bottom: 24px;
}

.action-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 16px;
  margin-bottom: 40px;
}

/* ── Dropzone ── */
.dropzone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 40px 24px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  background: var(--bg);
  display: none;
  margin-top: 16px;
  margin-bottom: 24px;
}

.dropzone.visible { display: block; }
.dropzone:hover, .dropzone.dragover {
  border-color: var(--accent);
  background: var(--surface-glow);
  box-shadow: 0 0 20px var(--accent-glow);
}

.dropzone .dz-icon {
  font-size: 2.5rem;
  margin-bottom: 12px;
}

.dropzone .dz-text {
  color: var(--text-dim);
  font-size: 0.95rem;
}

.dropzone .dz-text strong { color: var(--accent-cyan); }

/* ── Status Messages ── */
.status-bar {
  display: none;
  padding: 16px 20px;
  border-radius: var(--radius);
  margin-bottom: 24px;
  font-size: 0.9rem;
  line-height: 1.6;
}

.status-bar.visible { display: block; }

.status-bar.processing {
  background: var(--surface-glow);
  border: 1px solid var(--accent);
  color: var(--accent-cyan);
}

.status-bar.success {
  background: rgba(76, 175, 80, 0.08);
  border: 1px solid var(--success);
  color: var(--success);
}

.status-bar.error {
  background: rgba(231, 76, 60, 0.08);
  border: 1px solid var(--error);
  color: var(--error);
  white-space: pre-wrap;
}

/* ── Spinner ── */
.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid var(--accent-cyan);
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ── Admin Section ── */
.admin-table-selector {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.admin-toolbar {
  display: none;
  margin-bottom: 16px;
}

.admin-toolbar.visible { display: flex; gap: 12px; }

.btn-add-row {
  padding: 8px 20px;
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.2s, box-shadow 0.2s;
}
.btn-add-row:hover {
  background: var(--accent-hover);
  box-shadow: 0 0 16px var(--accent-glow);
}

.admin-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  max-height: 70vh;
  overflow-y: auto;
  display: none;
}

.admin-table-wrap.visible { display: block; }

.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

.admin-table th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: var(--bg-elevated);
  color: var(--text-dim);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-align: left;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-bottom-width: 2px;
  white-space: nowrap;
}

.admin-table td {
  padding: 6px 12px;
  border: 1px solid var(--border);
  white-space: nowrap;
  cursor: text;
  max-width: 260px;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: background 0.3s;
}

.admin-table tr:hover td { background: var(--surface-glow); }

.admin-table td.editing {
  padding: 2px 4px;
  background: var(--bg-input);
}

.admin-table td.saved {
  background: var(--accent-glow);
}

.admin-table td input {
  width: 100%;
  min-width: 80px;
  padding: 4px 8px;
  background: var(--bg);
  border: 1px solid var(--accent);
  border-radius: 4px;
  color: var(--text);
  font-family: inherit;
  font-size: 0.85rem;
  outline: none;
}

.admin-table .row-actions {
  padding: 6px 8px;
  text-align: center;
  white-space: nowrap;
}

.btn-delete-row {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-dim);
  width: 28px;
  height: 28px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.85rem;
  line-height: 1;
  transition: all 0.2s;
}
.btn-delete-row:hover {
  border-color: var(--accent-red);
  color: var(--accent-red);
  background: rgba(252, 81, 133, 0.1);
}

.admin-table tr.new-row td {
  background: var(--surface-glow);
}

.btn-save-row, .btn-cancel-row {
  padding: 4px 12px;
  font-family: inherit;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border: 1px solid var(--border);
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-save-row {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.btn-save-row:hover {
  background: var(--accent-hover);
  box-shadow: 0 0 12px var(--accent-glow);
}

.btn-cancel-row {
  background: transparent;
  color: var(--text-dim);
}
.btn-cancel-row:hover { border-color: var(--accent-red); color: var(--accent-red); }

/* ── Toggle switch ── */
.toggle {
  position: relative;
  display: inline-block;
  width: 40px;
  height: 22px;
  cursor: pointer;
}
.toggle input { opacity: 0; width: 0; height: 0; }
.toggle-slider {
  position: absolute;
  inset: 0;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 22px;
  transition: background 0.2s, border-color 0.2s;
}
.toggle-slider::before {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  left: 2px;
  bottom: 2px;
  background: var(--text-dim);
  border-radius: 50%;
  transition: transform 0.2s, background 0.2s;
}
.toggle input:checked + .toggle-slider {
  background: rgba(76, 175, 80, 0.2);
  border-color: var(--success);
}
.toggle input:checked + .toggle-slider::before {
  transform: translateX(18px);
  background: var(--success);
}

/* ── Password modal ── */
.pw-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}
.pw-modal {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px 32px;
  width: 340px;
  max-width: 90vw;
}
.pw-modal h3 {
  margin: 0 0 8px;
  color: var(--accent-cyan);
}
.pw-modal p {
  margin: 0 0 16px;
  color: var(--text-dim);
  font-size: 0.9rem;
}
.pw-modal input {
  width: 100%;
  padding: 10px 12px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-size: 0.95rem;
  margin-bottom: 16px;
  box-sizing: border-box;
}
.pw-modal input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 12px var(--accent-glow);
}
.pw-modal-actions {
  display: flex;
  gap: 8px;
}
.pw-modal-actions .btn { flex: 1; }
.pw-modal-error {
  color: var(--error);
  font-size: 0.85rem;
  margin-top: 10px;
  min-height: 1.2em;
}

.btn-pw-row {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-dim);
  cursor: pointer;
  font-size: 0.85rem;
  padding: 2px 6px;
}
.btn-pw-row:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

/* ── Sales Order Form ── */
.so-fieldset {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-bottom: 20px;
}

.so-fieldset legend {
  font-family: 'Exo 2', sans-serif;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  padding: 0 8px;
}

.so-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 14px;
}

.so-field {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.so-field.so-wide { grid-column: span 2; }
.so-field.so-sm { max-width: 120px; }

.so-field label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.so-field input,
.so-field select,
.so-field textarea {
  padding: 8px 12px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-family: inherit;
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.2s;
}

.so-field input:focus,
.so-field select:focus,
.so-field textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
}

.so-field select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%237a7282'%3E%3Cpath d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
}

.so-field select option,
.so-field select optgroup {
  background: var(--bg-elevated);
  color: var(--text);
}

/* Searchable Select */
.searchable-select {
  position: relative;
}
.ss-input {
  width: 100%;
  box-sizing: border-box;
}
.ss-dropdown {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  max-height: 220px;
  overflow-y: auto;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-top: none;
  border-radius: 0 0 6px 6px;
  z-index: 50;
}
.ss-dropdown.open { display: block; }
.ss-option {
  padding: 8px 12px;
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--text);
}
.ss-option:hover,
.ss-option.highlighted {
  background: rgba(103, 61, 230, 0.15);
  color: var(--accent-cyan);
}
.ss-option .ss-num {
  color: var(--text-dim);
  margin-right: 6px;
  font-size: 0.8rem;
}
.ss-empty {
  padding: 10px 12px;
  color: var(--text-dim);
  font-size: 0.85rem;
  font-style: italic;
}

.so-field textarea {
  resize: vertical;
  min-height: 48px;
}

.so-actions {
  display: flex;
  gap: 12px;
  margin-bottom: 24px;
}

.so-actions .so-add-btn { flex: 0 0 auto; width: auto; }
.so-actions .so-clear-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-dim);
  width: auto;
}
.so-actions .so-clear-btn:hover {
  border-color: var(--accent-red);
  color: var(--accent-red);
}

.so-export-bar {
  display: flex;
  align-items: center;
  gap: 16px;
}

.so-export-bar .btn { width: auto; }

.so-row-count {
  font-size: 0.9rem;
  color: var(--text-dim);
}

.so-export-bar .so-clear-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-dim);
  margin-left: auto;
}
.so-export-bar .so-clear-btn:hover {
  border-color: var(--accent-red);
  color: var(--accent-red);
}

/* ── Responsive ── */
@media (max-width: 600px) {
  .auth-card { padding: 32px 24px; }
  .app-header { padding: 12px 16px; }
  .tabs-container { padding: 0 16px; margin: 24px auto; }
  .tab-btn { padding: 10px 14px; font-size: 0.85rem; }
  .action-grid { grid-template-columns: 1fr; }
}