/* =========================================================
   Paragon Traders Invoicing — base: tokens, reset, controls
   ========================================================= */

:root {
  /* brand — sampled from the Paragon teal mark */
  --teal-600: #0b8b99;
  --teal-500: #00a2b9;
  --teal-400: #22b6c9;
  --teal-050: #e8f7f9;

  --ink-900: #10242c;
  --ink-700: #254049;
  --ink-500: #52696f;
  --ink-400: #7b8f95;
  --line: #e2e9ec;
  --line-strong: #cfdbdf;
  --surface: #ffffff;
  --surface-2: #f6f9fa;
  --canvas: #eef3f5;

  --danger: #c8443c;
  --danger-bg: #fdeceb;
  --warn: #b0771a;
  --warn-bg: #fdf3e2;
  --ok: #1c8a5a;
  --ok-bg: #e7f6ef;
  --info: #2a6fbf;
  --info-bg: #e9f1fb;

  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 16px;
  --r-xl: 22px;

  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-5: 24px;
  --sp-6: 32px;
  --sp-7: 48px;

  --shadow-1: 0 1px 2px rgba(16, 36, 44, .06), 0 1px 3px rgba(16, 36, 44, .05);
  --shadow-2: 0 4px 14px rgba(16, 36, 44, .10);
  --shadow-3: 0 18px 48px rgba(16, 36, 44, .18);

  --font: "Inter", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --mono: "SFMono-Regular", "Consolas", "Liberation Mono", monospace;
}

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

html, body { height: 100%; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.5;
  color: var(--ink-900);
  background: var(--canvas);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, p { margin: 0; }

a { color: var(--teal-600); text-decoration: none; }
a:hover { text-decoration: underline; }

img { max-width: 100%; }

[hidden] { display: none !important; }

:focus-visible {
  outline: 3px solid rgba(0, 162, 185, .55);
  outline-offset: 2px;
  border-radius: var(--r-sm);
}

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

/* ---------------------------------- buttons ---------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  min-height: 42px;
  padding: 0 16px;
  border: 1px solid transparent;
  border-radius: var(--r-md);
  background: var(--surface);
  color: var(--ink-700);
  font: inherit;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  white-space: nowrap;
  transition: background-color .15s, border-color .15s, box-shadow .15s, transform .05s;
}
.btn:active { transform: translateY(1px); }
.btn[disabled] { opacity: .55; cursor: not-allowed; }

.btn--primary {
  background: var(--teal-500);
  border-color: var(--teal-500);
  color: #fff;
  box-shadow: var(--shadow-1);
}
.btn--primary:hover:not([disabled]) { background: var(--teal-600); border-color: var(--teal-600); }

.btn--dark { background: var(--ink-900); border-color: var(--ink-900); color: #fff; }
.btn--dark:hover { background: var(--ink-700); }

.btn--outline { border-color: var(--line-strong); background: var(--surface); }
.btn--outline:hover { border-color: var(--teal-500); color: var(--teal-600); }

.btn--ghost { background: transparent; border-color: transparent; color: var(--ink-500); }
.btn--ghost:hover { background: var(--teal-050); color: var(--teal-600); }

.btn--danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn--danger:hover { filter: brightness(.94); }

.btn--sm { min-height: 34px; padding: 0 11px; font-size: 13px; border-radius: var(--r-sm); }
.btn--block { width: 100%; }
.btn--icon { min-height: 36px; min-width: 36px; padding: 0; }

.linkbtn {
  border: 0;
  background: none;
  padding: 0;
  font: inherit;
  font-size: inherit;
  color: var(--teal-600);
  cursor: pointer;
}
.linkbtn:hover { text-decoration: underline; }

.linkbtn--danger { color: var(--danger); }

.iconbtn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px; height: 40px;
  border: 0;
  border-radius: var(--r-md);
  background: transparent;
  color: var(--ink-500);
  cursor: pointer;
}
.iconbtn:hover { background: var(--teal-050); color: var(--teal-600); }

/* ---------------------------------- fields ---------------------------------- */

.field { margin-bottom: var(--sp-4); }

.field > label,
.form-label {
  display: block;
  margin-bottom: 5px;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-700);
}
.form-label .req { color: var(--danger); margin-inline-start: 2px; }

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="url"],
input[type="password"],
input[type="search"],
input[type="date"],
input[type="number"],
input[type="datetime-local"],
select,
textarea {
  width: 100%;
  min-height: 44px;
  padding: 9px 12px;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-md);
  background: var(--surface);
  color: var(--ink-900);
  font: inherit;
  font-size: 15px;
}
textarea { min-height: 84px; resize: vertical; line-height: 1.5; }

input:hover, select:hover, textarea:hover { border-color: #b6c7cc; }

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--teal-500);
  box-shadow: 0 0 0 3px rgba(0, 162, 185, .16);
}

input[readonly] { background: var(--surface-2); color: var(--ink-500); }

input.is-invalid, select.is-invalid, textarea.is-invalid {
  border-color: var(--danger);
  background: #fffafa;
}

.field__error {
  display: block;
  margin-top: 4px;
  font-size: 12.5px;
  color: var(--danger);
}
.field__hint { display: block; margin-top: 4px; font-size: 12.5px; color: var(--ink-400); }

select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%2352696f' stroke-width='2' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-inline-end: 32px;
}

input[type="checkbox"] { width: 18px; height: 18px; min-height: 0; accent-color: var(--teal-500); cursor: pointer; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-3); }
.form-row--3 { grid-template-columns: 1fr 1fr 1fr; }
@media (max-width: 640px) {
  .form-row, .form-row--3 { grid-template-columns: 1fr; }
}

.check {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: 14px;
  color: var(--ink-700);
  cursor: pointer;
  user-select: none;
}

/* ---------------------------------- badges ---------------------------------- */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 9px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .02em;
  text-transform: uppercase;
}
.badge::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: currentColor;
}
.badge--paid, .badge--ok { background: var(--ok-bg); color: var(--ok); }
.badge--unpaid, .badge--danger { background: var(--danger-bg); color: var(--danger); }
.badge--partial { background: var(--warn-bg); color: var(--warn); }
.badge--draft, .badge--muted { background: #eef2f4; color: var(--ink-500); }
.badge--info { background: var(--info-bg); color: var(--info); }

/* ---------------------------------- misc ---------------------------------- */

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-1);
}

.card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
  padding: 16px 20px;
  border-bottom: 1px solid var(--line);
}
.card__title { font-size: 15px; font-weight: 700; color: var(--ink-900); }
.card__body { padding: 20px; }

.muted { color: var(--ink-400); }
.small { font-size: 13px; }
.strong { font-weight: 700; }
.num { font-variant-numeric: tabular-nums; white-space: nowrap; }
.right { text-align: right; }

.empty {
  padding: 46px 24px;
  text-align: center;
  color: var(--ink-400);
}
.empty__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px; height: 56px;
  margin-bottom: 12px;
  border-radius: 50%;
  background: var(--teal-050);
  color: var(--teal-500);
}
.empty h3 { font-size: 16px; color: var(--ink-700); margin-bottom: 4px; }
.empty p { font-size: 14px; margin-bottom: 16px; }