/* ================================================================
   Klinik Management — Design System
   Based on DESIGN.md (Airtable-style editorial)
   Editorial white canvas · near-black ink · signature surface cards
   ================================================================ */

:root {
  /* —— Bootstrap 5 variable overrides (so .table / .text-muted etc. inherit our palette) —— */
  --bs-body-color:           #333840;
  --bs-body-bg:              #ffffff;
  --bs-heading-color:        #181d26;
  --bs-secondary-color:      #41454d;
  --bs-tertiary-color:       #6b6f78;
  --bs-border-color:         #dddddd;
  --bs-table-color:          #333840;
  --bs-table-color-type:     #333840;
  --bs-table-color-state:    #333840;
  --bs-table-bg:             #ffffff;
  --bs-table-border-color:   #dddddd;
  --bs-table-striped-color:  #333840;
  --bs-table-hover-color:    #181d26;
  --bs-table-hover-bg:       #f8fafc;
  --bs-link-color:           #1b61c9;
  --bs-link-hover-color:     #1a3866;
  --bs-link-color-rgb:       27,97,201;

  /* —— Colors: Brand & Accent —— */
  --primary:           #181d26;
  --primary-active:    #0d1218;

  /* —— Surface —— */
  --canvas:            #ffffff;
  --surface-soft:      #f8fafc;
  --surface-strong:    #e0e2e6;
  --surface-dark:      #181d26;
  --surface-dark-el:   #1d1f25;
  --hairline:          #dddddd;

  /* —— Text —— */
  --ink:               #181d26;
  --body:              #333840;
  --muted:             #41454d;
  --border-strong:     #9297a0;
  --on-primary:        #ffffff;

  /* —— Signature surfaces —— */
  --sig-coral:         #aa2d00;
  --sig-forest:        #0a2e0e;
  --sig-cream:         #f5e9d4;
  --sig-peach:         #fcab79;
  --sig-mint:          #a8d8c4;
  --sig-yellow:        #f4d35e;
  --sig-mustard:       #d9a441;

  /* —— Semantic —— */
  --link:              #1b61c9;
  --link-active:       #1a3866;
  --info:              #254fad;
  --info-border:       #458fff;
  --success:           #006400;
  --success-border:    #39bf45;

  /* —— Spacing (4px base) —— */
  --sp-xxs: 4px; --sp-xs: 8px; --sp-sm: 12px; --sp-md: 16px;
  --sp-lg: 24px; --sp-xl: 32px; --sp-xxl: 48px; --sp-section: 96px;

  /* —— Radius —— */
  --r-xs: 2px; --r-sm: 6px; --r-md: 10px; --r-lg: 12px;
  --r-pill: 9999px; --r-full: 9999px;

  /* —— Type stack —— */
  --font-sans: "Inter Display", "Inter", -apple-system, BlinkMacSystemFont,
               "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
}

/* ================== Base ================== */
* { box-sizing: border-box; }
html, body { background: var(--canvas); color: var(--body); }
body {
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 400;
  line-height: 1.25;
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 { color: var(--ink); font-weight: 400; letter-spacing: 0; margin: 0; }
h1 { font-size: 40px; line-height: 1.2; font-weight: 400; }
h2 { font-size: 32px; line-height: 1.2; font-weight: 400; }
h3 { font-size: 24px; line-height: 1.35; font-weight: 400; }
h4 { font-size: 20px; line-height: 1.5; font-weight: 400; }
h5 { font-size: 18px; line-height: 1.4; font-weight: 500; }
h6 { font-size: 16px; line-height: 1.4; font-weight: 500; }

a { color: var(--link); text-decoration: none; }
a:hover { color: var(--link-active); }
code, .code { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; font-size: 13px; color: var(--ink); }
small, .small { font-size: 13px; color: var(--muted); }
.text-muted { color: var(--muted) !important; }
p { color: var(--body); }
.text-body { color: var(--body) !important; }
.text-dark, .text-ink { color: var(--ink) !important; }
hr { border: none; border-top: 1px solid var(--hairline); margin: var(--sp-lg) 0; }

/* ================== Layout ================== */
.app-wrapper { min-height: 100vh; background: var(--canvas); }
.sidebar {
  width: 248px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--canvas);
  color: var(--ink);
  border-right: 1px solid var(--hairline);
}
@media (min-width: 768px) {
  .sidebar { position: sticky; top: 0; height: 100vh; }
}
.sidebar-brand {
  padding: var(--sp-lg) var(--sp-lg);
  border-bottom: 1px solid var(--hairline);
}
.sidebar-brand h5 { color: var(--ink) !important; font-size: 16px; font-weight: 600; }
.sidebar-brand small { color: var(--muted) !important; font-size: 12px; }

.sidebar .nav-link {
  color: var(--ink) !important;
  padding: var(--sp-sm) var(--sp-lg);
  font-size: 14px;
  font-weight: 400;
  border-left: 2px solid transparent;
  display: flex;
  align-items: center;
  gap: 10px;
}
.sidebar .nav-link i { width: 18px; font-size: 15px; color: var(--ink); }
.sidebar .nav-link:hover {
  background: var(--surface-soft);
  color: var(--ink) !important;
}
.sidebar .nav-link.active {
  background: var(--surface-soft);
  color: var(--ink) !important;
  border-left-color: var(--ink);
  font-weight: 600;
}
.sidebar .nav-link.active i { color: var(--ink); }
.sidebar-footer {
  padding: var(--sp-md) var(--sp-lg);
  border-top: 1px solid var(--hairline);
  font-size: 13px;
  color: var(--ink);
}
.sidebar-footer .text-muted { color: var(--muted) !important; }
.sidebar-footer .fw-semibold { color: var(--ink) !important; font-weight: 600; }
.sidebar-footer .btn-outline-secondary {
  background: var(--canvas) !important;
  color: var(--ink) !important;
  border: 1px solid var(--hairline) !important;
}
.sidebar-footer .btn-outline-secondary:hover {
  background: var(--surface-soft) !important;
  border-color: var(--border-strong) !important;
}

.main-content {
  min-height: 100vh;
  padding: var(--sp-xl) var(--sp-xxl);
  background: var(--canvas);
}
@media (max-width: 767px) {
  .main-content { padding: 88px var(--sp-md) var(--sp-xl); }
}

/* Top mobile nav */
.navbar.bg-dark { background: var(--surface-dark) !important; height: 56px; }
.navbar .navbar-brand { font-size: 14px; font-weight: 500; }

/* ================== Page Header ================== */
.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--sp-md);
  margin-bottom: var(--sp-xl);
  padding-bottom: var(--sp-md);
}
.page-header h2 {
  font-size: 28px;
  font-weight: 400;
  color: var(--ink);
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
}
.page-header h2 i { font-size: 22px; color: var(--ink); opacity: .7; }

/* ================== Buttons ================== */
.btn {
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0;
  border-radius: var(--r-lg);
  padding: 10px 18px;
  border: 1px solid transparent;
  transition: background .12s ease, border-color .12s ease, color .12s ease;
}
.btn-lg { padding: 14px 22px; font-size: 15px; }
.btn-sm { padding: 6px 12px; font-size: 13px; border-radius: var(--r-md); }

/* Primary CTA — near-black, the signature action */
.btn-primary, .btn-success {
  background: var(--primary);
  color: var(--on-primary);
  border-color: var(--primary);
}
.btn-primary:hover, .btn-primary:focus,
.btn-success:hover, .btn-success:focus {
  background: var(--primary-active);
  color: var(--on-primary);
  border-color: var(--primary-active);
  box-shadow: none;
}
.btn-primary:active, .btn-success:active { background: var(--primary-active) !important; }

/* Secondary — white with hairline outline */
.btn-outline-primary, .btn-outline-secondary, .btn-outline-dark {
  background: var(--canvas);
  color: var(--ink);
  border: 1px solid var(--hairline);
}
.btn-outline-primary:hover, .btn-outline-secondary:hover, .btn-outline-dark:hover {
  background: var(--surface-soft);
  color: var(--ink);
  border-color: var(--border-strong);
}

/* Danger — kept restrained */
.btn-danger { background: var(--sig-coral); border-color: var(--sig-coral); color: var(--on-primary); }
.btn-danger:hover { background: #8a2400; border-color: #8a2400; }
.btn-outline-danger {
  background: var(--canvas);
  color: var(--sig-coral);
  border: 1px solid var(--hairline);
}
.btn-outline-danger:hover { background: var(--sig-coral); color: var(--on-primary); border-color: var(--sig-coral); }

/* ================== Inputs ================== */
.form-control, .form-select {
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 400;
  color: var(--ink);
  background: var(--canvas);
  border: 1px solid var(--hairline);
  border-radius: var(--r-sm);
  padding: 10px 14px;
  height: 44px;
  box-shadow: none;
}
textarea.form-control { height: auto; }
.form-control:focus, .form-select:focus {
  border-color: var(--info-border);
  box-shadow: 0 0 0 3px rgba(69,143,255,.15);
  outline: none;
}
.form-control-sm, .form-select-sm { height: 36px; font-size: 13px; padding: 7px 10px; }
.form-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: 6px;
  letter-spacing: 0;
}
.input-group-text {
  background: var(--surface-soft);
  border: 1px solid var(--hairline);
  border-radius: var(--r-sm);
  color: var(--muted);
  font-size: 14px;
}
.form-check-input:checked { background-color: var(--primary); border-color: var(--primary); }
.form-check-input:focus { box-shadow: 0 0 0 3px rgba(69,143,255,.15); border-color: var(--info-border); }

/* ================== Cards ================== */
.card {
  background: var(--canvas);
  border: 1px solid var(--hairline);
  border-radius: var(--r-md);
  box-shadow: none;
}
.card .card-body { padding: var(--sp-lg); }
.card .card-header {
  background: var(--canvas);
  border-bottom: 1px solid var(--hairline);
  font-weight: 500;
  font-size: 15px;
  color: var(--ink);
  padding: var(--sp-md) var(--sp-lg);
}

/* Form card variant */
.form-card {
  background: var(--canvas);
  padding: var(--sp-xl);
  border: 1px solid var(--hairline);
  border-radius: var(--r-md);
}
.form-section-title {
  font-size: 14px;
  font-weight: 500;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .08em;
  padding-bottom: var(--sp-sm);
  border-bottom: 1px solid var(--hairline);
  margin-bottom: var(--sp-md);
  margin-top: var(--sp-md);
}

/* ================== Signature Stat Cards ================== */
/* Per DESIGN.md: full-bleed signature surfaces in coral / forest / dark / cream */
.stat-card {
  border: 1px solid var(--hairline);
  border-radius: var(--r-md);
  background: var(--canvas);
  box-shadow: none;
  transition: transform .12s ease;
}
.stat-card .card-body { padding: var(--sp-lg); }
.stat-card .stat-icon { font-size: 24px; opacity: .55; }
.stat-card .stat-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .08em;
  font-weight: 500;
  opacity: .75;
  margin-bottom: 6px;
}
.stat-card .stat-value {
  font-size: 28px;
  font-weight: 400;
  letter-spacing: -.02em;
  line-height: 1.1;
}

/* Signature card backgrounds (replaces old gradient cards) */
.sig-dark    { background: var(--surface-dark);   color: var(--on-primary); border: none; }
.sig-coral   { background: var(--sig-coral);      color: var(--on-primary); border: none; }
.sig-forest  { background: var(--sig-forest);     color: var(--on-primary); border: none; }
.sig-cream   { background: var(--sig-cream);      color: var(--ink); border: none; }
.sig-peach   { background: var(--sig-peach);      color: var(--ink); border: none; }
.sig-mint    { background: var(--sig-mint);       color: var(--ink); border: none; }
.sig-yellow  { background: var(--sig-yellow);     color: var(--ink); border: none; }
.sig-mustard { background: var(--sig-mustard);    color: var(--ink); border: none; }
.sig-soft    { background: var(--surface-soft);   color: var(--ink); border: 1px solid var(--hairline); }

/* legacy gradient class names — remap to signature surfaces */
.bg-grad-blue   { background: var(--surface-dark); color: var(--on-primary); border: none; }
.bg-grad-green  { background: var(--sig-forest);   color: var(--on-primary); border: none; }
.bg-grad-red    { background: var(--sig-coral);    color: var(--on-primary); border: none; }
.bg-grad-orange { background: var(--sig-mustard);  color: var(--ink); border: none; }
.bg-grad-teal   { background: var(--sig-mint);     color: var(--ink); border: none; }
.bg-grad-purple { background: var(--sig-cream);    color: var(--ink); border: none; }
.bg-grad-blue .stat-icon, .bg-grad-green .stat-icon, .bg-grad-red .stat-icon { opacity: .7; }

/* ================== Tables ================== */
.table {
  font-size: 14px;
  color: var(--body) !important;
  margin-bottom: 0;
  --bs-table-color: var(--body);
  --bs-table-bg: transparent;
}
.table thead th {
  background: var(--canvas) !important;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--ink) !important;
  border-bottom: 1px solid var(--hairline);
  padding: 14px 16px;
}
.table tbody td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--hairline);
  vertical-align: middle;
  color: var(--body) !important;
  background: transparent;
}
.table tbody tr:last-child td { border-bottom: none; }
.table-hover tbody tr:hover td { background: var(--surface-soft) !important; color: var(--ink) !important; }
.table .fw-semibold, .table .fw-bold { font-weight: 600; color: var(--ink) !important; }
.table .text-muted { color: var(--muted) !important; }
.table-light, .table-light > td, .table-light > th {
  background: var(--surface-soft) !important;
  color: var(--ink) !important;
}
.table-danger, .table-danger > td { background: #fff4f0 !important; color: var(--ink) !important; }

/* Empty-state row */
.table tbody td.text-center.text-muted {
  color: #41454d !important;
  font-style: italic;
  padding: 32px 16px;
}

/* ===== NUCLEAR fallback: force visible dark text on every table cell ===== */
/* Defends against Bootstrap CSS variable cascade in cases where browser doesn't pick up our overrides. */
.card .table,
.card .table thead,
.card .table thead tr,
.card .table thead th,
.card .table tbody,
.card .table tbody tr,
.card .table tbody td,
.card .table tfoot td {
  color: #181d26 !important;
}
.card .table tbody td { color: #333840 !important; }
.card .table thead th { color: #181d26 !important; font-weight: 600 !important; }
.card .table .text-muted,
.card .table small.text-muted,
.card .table td.text-muted { color: #41454d !important; }

/* Form labels & body text — explicit colors */
body, body p, body label, body span, body div, body td, body th { /* no-op anchor */ }
.form-label, label.form-label { color: #181d26 !important; font-weight: 500; }
.card-body, .card-body p, .card-body div, .card-body span:not(.badge) { color: #333840; }
.card-body .text-muted, body .text-muted { color: #41454d !important; }
.card-body h1, .card-body h2, .card-body h3, .card-body h4, .card-body h5, .card-body h6,
.card-body .fw-bold, .card-body .fw-semibold, .card-body strong { color: #181d26 !important; }

/* Make sure code blocks are visible */
code, .code { color: #181d26 !important; background: #f8fafc; padding: 2px 6px; border-radius: 4px; font-size: 12.5px; }

/* ================== Badges & Status ================== */
.badge {
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .04em;
  padding: 4px 10px;
  border-radius: var(--r-sm);
  text-transform: uppercase;
}
.badge-status { padding: 4px 10px; }
.badge-unpaid    { background: #fff0ec; color: var(--sig-coral); }
.badge-partial   { background: var(--sig-cream); color: #6b4a14; }
.badge-paid      { background: #e8f5e9; color: var(--success); }
.badge-cancelled { background: var(--surface-strong); color: var(--muted); }

/* Bootstrap color bridges */
.bg-primary   { background-color: var(--primary)      !important; }
.bg-secondary { background-color: var(--muted)        !important; }
.bg-success   { background-color: var(--success)      !important; }
.bg-danger    { background-color: var(--sig-coral)    !important; }
.bg-warning   { background-color: var(--sig-mustard)  !important; color: var(--ink) !important; }
.bg-info      { background-color: var(--info)         !important; }
.bg-light     { background-color: var(--surface-soft) !important; color: var(--ink) !important; }
.bg-dark      { background-color: var(--surface-dark) !important; }
.text-primary { color: var(--ink)        !important; }
.text-danger  { color: var(--sig-coral)  !important; }
.text-success { color: var(--success)    !important; }
.text-warning { color: #6b4a14           !important; }

/* ================== Alerts ================== */
.alert {
  border: 1px solid var(--hairline);
  border-radius: var(--r-md);
  font-size: 14px;
  padding: var(--sp-md) var(--sp-lg);
  background: var(--surface-soft);
  color: var(--ink);
}
.alert-success { background: #f0f8f0; border-color: var(--success-border); color: var(--success); }
.alert-danger  { background: #fff4f0; border-color: var(--sig-coral); color: var(--sig-coral); }
.alert-info    { background: #f0f6fc; border-color: var(--info-border); color: var(--info); }
.alert-warning { background: var(--sig-cream); border-color: var(--sig-mustard); color: #6b4a14; }

/* ================== Pagination ================== */
.pagination .page-link {
  color: var(--ink);
  border: 1px solid var(--hairline);
  background: var(--canvas);
  font-size: 13px;
  padding: 6px 12px;
  border-radius: var(--r-sm);
  margin: 0 2px;
}
.pagination .page-item.active .page-link {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--on-primary);
}
.pagination .page-link:hover { background: var(--surface-soft); color: var(--ink); }

/* ================== Modals ================== */
.modal-content {
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  box-shadow: 0 12px 48px rgba(24,29,38,.12);
}
.modal-header {
  border-bottom: 1px solid var(--hairline);
  padding: var(--sp-md) var(--sp-lg);
}
.modal-title { font-size: 18px; font-weight: 500; color: var(--ink); }
.modal-body { padding: var(--sp-lg); }
.modal-footer { border-top: 1px solid var(--hairline); padding: var(--sp-md) var(--sp-lg); }

/* ================== Login (Editorial Hero) ================== */
.login-page {
  min-height: 100vh;
  background: var(--canvas);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--sp-xxl) var(--sp-md);
}
.login-card {
  width: 100%;
  max-width: 420px;
  background: var(--canvas);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  padding: var(--sp-xxl);
  box-shadow: none;
}
.login-card .brand-mark {
  width: 56px; height: 56px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--surface-dark);
  color: var(--on-primary);
  border-radius: var(--r-md);
  margin-bottom: var(--sp-md);
  font-size: 22px;
}
.login-card h1 {
  font-size: 28px;
  font-weight: 400;
  letter-spacing: -.01em;
  margin-bottom: 6px;
}
.login-card .lede { font-size: 14px; color: var(--muted); margin-bottom: var(--sp-xl); }
.login-card .btn-primary { width: 100%; padding: 14px 18px; font-size: 15px; }
.login-card .default-cred {
  margin-top: var(--sp-lg);
  font-size: 13px;
  color: var(--muted);
  text-align: center;
  padding-top: var(--sp-md);
  border-top: 1px solid var(--hairline);
}

/* ================== Items table (invoice/purchase) ================== */
.items-table { border: 1px solid var(--hairline); border-radius: var(--r-md); overflow: hidden; }
.items-table thead th { background: var(--surface-soft); }
.items-table tbody td { border-bottom: 1px solid var(--hairline); }
.items-table input.form-control {
  height: 38px;
  font-size: 14px;
  padding: 8px 10px;
}
.items-table .remove-btn { cursor: pointer; color: var(--sig-coral); }

/* ================== Misc ================== */
.dropdown-menu {
  border: 1px solid var(--hairline);
  border-radius: var(--r-md);
  box-shadow: 0 8px 24px rgba(24,29,38,.08);
}
.dropdown-item { font-size: 14px; padding: 8px 16px; }
.dropdown-item:hover { background: var(--surface-soft); color: var(--ink); }

.btn-close { opacity: .55; }
.btn-close:hover { opacity: 1; }

/* Section rhythm */
.section { padding-top: var(--sp-section); padding-bottom: var(--sp-section); }

/* Utility */
.gap-section { gap: var(--sp-section); }
.bordered-soft { border: 1px solid var(--hairline); border-radius: var(--r-md); }

/* ================== Print ================== */
@media print {
  .no-print { display: none !important; }
  .sidebar, .navbar, .main-content > .alert { display: none !important; }
  body { background: var(--canvas); }
  .main-content { padding: 0 !important; }
}