@import url('https://fonts.googleapis.com/css2?family=Lexend:wght@500;600;700&family=Source+Sans+3:wght@400;500;600;700&display=swap');

:root {
  /* Brand */
  --color-primary: #1e3a5f;
  --color-primary-hover: #16293f;
  --color-cta: #059669;
  --color-cta-hover: #047857;
  --color-cta-light: #ecfdf5;

  /* Surfaces */
  --bg: #f8fafc;
  --panel: #ffffff;
  --border: #e4e7eb;
  --text: #0f172a;
  --text-dim: #475569;

  /* Legacy aliases (kept so existing rules below stay simple) */
  --accent: var(--color-cta);
  --accent-dark: var(--color-cta-hover);
  --accent-light: var(--color-cta-light);

  /* Status */
  --danger: #dc2626;
  --danger-light: #fef2f2;
  --danger-border: #fecaca;
  --warn: #92400e;
  --warn-light: #fef3c7;
  --warn-border: #fde68a;

  --focus-ring: rgba(30, 58, 95, 0.35);
  --radius: 10px;
  --radius-sm: 7px;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.10);
  --shadow-modal: 0 24px 60px rgba(15, 23, 42, 0.25);

  --font-heading: 'Lexend', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif;

  --sidebar-bg: #1e3a5f;
  --sidebar-bg-hover: rgba(255, 255, 255, 0.08);
  --sidebar-bg-active: rgba(255, 255, 255, 0.14);
  --sidebar-text: #cdd9e8;

  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;

  font-size: 15px;
  color-scheme: light;
}

/* Dark tokens: apply via system preference (unless explicitly set to light),
   or via explicit [data-theme="dark"] toggle (wins either direction). */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #0b1220;
    --panel: #131d31;
    --border: #263349;
    --text: #e6edf5;
    --text-dim: #93a3ba;

    --color-primary: #5b8ac9;
    --color-primary-hover: #7ea3d6;
    --color-cta: #10b981;
    --color-cta-hover: #34d399;
    --color-cta-light: rgba(16, 185, 129, 0.16);
    --accent: var(--color-cta);
    --accent-dark: var(--color-cta-hover);
    --accent-light: var(--color-cta-light);

    --danger: #f87171;
    --danger-light: rgba(220, 38, 38, 0.16);
    --danger-border: rgba(248, 113, 113, 0.35);
    --warn: #fbbf24;
    --warn-light: rgba(217, 119, 6, 0.18);
    --warn-border: rgba(251, 191, 36, 0.35);

    --focus-ring: rgba(91, 138, 201, 0.4);
    --shadow-modal: 0 24px 60px rgba(0, 0, 0, 0.55);

    --sidebar-bg: #0e1a2e;
    --sidebar-text: #a9bcd4;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0b1220;
  --panel: #131d31;
  --border: #263349;
  --text: #e6edf5;
  --text-dim: #93a3ba;

  --color-primary: #5b8ac9;
  --color-primary-hover: #7ea3d6;
  --color-cta: #10b981;
  --color-cta-hover: #34d399;
  --color-cta-light: rgba(16, 185, 129, 0.16);
  --accent: var(--color-cta);
  --accent-dark: var(--color-cta-hover);
  --accent-light: var(--color-cta-light);

  --danger: #f87171;
  --danger-light: rgba(220, 38, 38, 0.16);
  --danger-border: rgba(248, 113, 113, 0.35);
  --warn: #fbbf24;
  --warn-light: rgba(217, 119, 6, 0.18);
  --warn-border: rgba(251, 191, 36, 0.35);

  --focus-ring: rgba(91, 138, 201, 0.4);
  --shadow-modal: 0 24px 60px rgba(0, 0, 0, 0.55);

  --sidebar-bg: #0e1a2e;
  --sidebar-text: #a9bcd4;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  transition: background var(--transition-base), color var(--transition-base);
}

h1, h2, h3, .brand, .stat-card .value {
  font-family: var(--font-heading);
}

a { color: var(--color-primary); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}

button { font-family: inherit; cursor: pointer; }

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.icon { flex-shrink: 0; display: inline-block; vertical-align: middle; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  padding: 9px 16px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  transition: background var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}
.btn:hover { background: var(--bg); border-color: #c9cfd9; }
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: var(--color-cta);
  border-color: var(--color-cta);
  color: #fff;
}
.btn-primary:hover { background: var(--color-cta-hover); border-color: var(--color-cta-hover); }
.btn-danger {
  background: var(--danger-light);
  border-color: var(--danger-border);
  color: var(--danger);
}
.btn-danger:hover { filter: brightness(0.97); }
.btn-sm { padding: 5px 10px; font-size: 13px; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn:disabled:hover { background: var(--panel); transform: none; }

input, select, textarea {
  font-family: inherit;
  font-size: 14px;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--panel);
  color: var(--text);
  width: 100%;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--focus-ring);
}
label {
  display: block;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text-dim);
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}
.field { margin-bottom: 14px; }
.field-row { display: flex; gap: 12px; flex-wrap: wrap; }
.field-row > .field { flex: 1; min-width: 140px; }

/* ---- App shell ---- */
.app-shell { display: flex; min-height: 100vh; }

.mobile-topbar {
  display: none;
  position: sticky;
  top: 0;
  z-index: 150;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--sidebar-bg);
  color: #fff;
}
.mobile-topbar .brand-mini { font-family: var(--font-heading); font-weight: 600; font-size: 15px; }
.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  border: none;
  background: transparent;
  color: inherit;
  transition: background var(--transition-fast);
}
.icon-btn:hover { background: rgba(255, 255, 255, 0.1); }
.icon-btn.on-panel { color: var(--text-dim); }
.icon-btn.on-panel:hover { background: var(--bg); color: var(--text); }

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(8, 12, 20, 0.5);
  z-index: 190;
}

.sidebar {
  width: 224px;
  flex-shrink: 0;
  background: var(--sidebar-bg);
  color: var(--sidebar-text);
  display: flex;
  flex-direction: column;
  padding: 18px 12px;
  transition: background var(--transition-base);
}
.sidebar .brand {
  font-weight: 700;
  font-size: 15.5px;
  padding: 6px 10px 20px;
  line-height: 1.3;
  color: #fff;
}
.sidebar .brand small { display: block; font-weight: 400; opacity: 0.65; font-size: 11px; font-family: var(--font-body); }
.nav-item {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 10px 12px;
  border-radius: 8px;
  color: var(--sidebar-text);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 2px;
  border: none;
  background: transparent;
  width: 100%;
  text-align: left;
  transition: background var(--transition-fast), color var(--transition-fast);
}
.nav-item .icon { opacity: 0.85; }
.nav-item:hover { background: var(--sidebar-bg-hover); color: #fff; }
.nav-item.active { background: var(--sidebar-bg-active); color: #fff; }
.nav-item.active .icon { opacity: 1; }
.sidebar-footer { margin-top: auto; padding: 10px; display: flex; flex-direction: column; gap: 8px; }
.sidebar-footer .btn {
  width: 100%;
  justify-content: center;
  background: transparent;
  border-color: rgba(255, 255, 255, 0.18);
  color: var(--sidebar-text);
}
.sidebar-footer .btn:hover { background: rgba(255, 255, 255, 0.08); color: #fff; }
.theme-toggle { display: flex; align-items: center; gap: 8px; }
.theme-toggle .moon-icon { display: none; }
:root[data-theme="dark"] .theme-toggle .sun-icon { display: none; }
:root[data-theme="dark"] .theme-toggle .moon-icon { display: inline-block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .sun-icon { display: none; }
  :root:not([data-theme="light"]) .theme-toggle .moon-icon { display: inline-block; }
}

.main { flex: 1; min-width: 0; padding: 28px 36px 60px; }
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}
.topbar h1 { font-size: 22px; margin: 0; font-weight: 600; }
.topbar .sub { color: var(--text-dim); font-size: 13.5px; margin-top: 2px; }

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
  transition: background var(--transition-base), border-color var(--transition-base);
}
.panel h2 { margin: 0 0 14px; font-size: 15px; font-weight: 600; }

.grid-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 14px; margin-bottom: 20px; }
.stat-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}
.stat-card:hover { transform: translateY(-1px); box-shadow: var(--shadow-md); }
.stat-card .label { font-size: 12px; text-transform: uppercase; letter-spacing: 0.03em; color: var(--text-dim); font-weight: 600; }
.stat-card .value { font-size: 24px; font-weight: 700; margin-top: 6px; }

.table-scroll { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); white-space: nowrap; }
th { color: var(--text-dim); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: 0.02em; }
tr:last-child td { border-bottom: none; }
tr.clickable { cursor: pointer; }
tr.clickable:hover { background: var(--bg); }
.text-right { text-align: right; }
.amount { font-variant-numeric: tabular-nums; }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11.5px;
  font-weight: 600;
  padding: 2px 9px;
  border-radius: 20px;
}
.badge.printed { background: var(--accent-light); color: var(--accent-dark); }
.badge.voided { background: var(--danger-light); color: var(--danger); }
.badge.draft { background: var(--bg); color: var(--text-dim); border: 1px solid var(--border); }
.badge.warn { background: var(--warn-light); color: var(--warn); }
.badge.ok { background: var(--accent-light); color: var(--accent-dark); }

.toolbar { display: flex; gap: 10px; align-items: center; margin-bottom: 16px; flex-wrap: wrap; }
.toolbar .spacer { flex: 1; }

.empty-state { text-align: center; padding: 40px 20px; color: var(--text-dim); }
.empty-state .icon { opacity: 0.35; margin-bottom: 10px; }

.modal-backdrop {
  position: fixed; inset: 0; background: rgba(8, 12, 20, 0.5);
  display: flex; align-items: flex-start; justify-content: center;
  padding: 40px 16px; overflow-y: auto; z-index: 100;
  animation: fade-in var(--transition-base);
}
.modal {
  background: var(--panel); border-radius: 12px; padding: 24px;
  width: 100%; max-width: 560px;
  box-shadow: var(--shadow-modal);
  border: 1px solid var(--border);
  animation: modal-in var(--transition-base);
}
.modal h2 { margin-top: 0; font-weight: 600; }
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 18px; flex-wrap: wrap; }

@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes modal-in { from { opacity: 0; transform: translateY(8px) scale(0.98); } to { opacity: 1; transform: none; } }

.error-text { color: var(--danger); font-size: 13.5px; margin: 6px 0 0; }
.hint { color: var(--text-dim); font-size: 12.5px; margin-top: 4px; }

.masked-field { display: flex; align-items: center; gap: 8px; }
.masked-field .value { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }

.auth-page {
  min-height: 100vh; display: flex; align-items: center; justify-content: center; background: var(--bg);
  padding: 20px;
}
.auth-card {
  background: var(--panel); border: 1px solid var(--border); border-radius: 14px;
  padding: 36px; width: 100%; max-width: 380px;
  box-shadow: var(--shadow-md);
}
.auth-card h1 { font-size: 19px; margin: 0 0 6px; font-weight: 600; }
.auth-card p.sub { color: var(--text-dim); font-size: 13.5px; margin: 0 0 22px; }
.auth-card .btn-primary { width: 100%; justify-content: center; margin-top: 6px; }

.checkbox-row { display: flex; align-items: center; gap: 8px; }
.checkbox-row input { width: auto; }
.checkbox-row label { margin: 0; text-transform: none; font-weight: 500; font-size: 13.5px; color: var(--text); }

.section-title { font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.03em; color: var(--text-dim); margin: 22px 0 10px; }
.section-title:first-child { margin-top: 0; }

/* ---- Toasts ---- */
.toast-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 300;
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-width: min(340px, calc(100vw - 32px));
}
.toast {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--panel);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 10px;
  padding: 12px 14px;
  font-size: 13.5px;
  box-shadow: var(--shadow-md);
  animation: toast-in var(--transition-base);
}
.toast.success { border-color: var(--accent-light); }
.toast.success .icon { color: var(--accent); }
.toast.error { border-color: var(--danger-border); }
.toast.error .icon { color: var(--danger); }
.toast.leaving { animation: toast-out var(--transition-base) forwards; }
@keyframes toast-in { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
@keyframes toast-out { to { opacity: 0; transform: translateY(6px); } }

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .mobile-topbar { display: flex; }
  .app-shell { min-height: calc(100vh - 64px); }
  .sidebar {
    position: fixed;
    top: 0; bottom: 0; left: 0;
    z-index: 200;
    transform: translateX(-100%);
    box-shadow: var(--shadow-modal);
  }
  .sidebar.open { transform: translateX(0); }
  .sidebar-overlay.open { display: block; }
  .main { padding: 20px 16px 48px; }
  .topbar h1 { font-size: 19px; }
  .grid-cards { grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); }
  .modal { padding: 20px; }
  .field-row { flex-direction: column; gap: 0; }
}