:root {
  --ink: #0f0f0f;
  --ink-soft: #262626;
  --paper: #ffffff;
  --paper-soft: #fafafa;
  --muted: #85878c;
  --line: #e6e6e6;

  --bs-body-bg: var(--paper);
  --bs-body-color: #1a1a1a;
  --bs-body-font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  --bs-primary: var(--ink);
  --bs-primary-rgb: 15, 15, 15;
  --bs-primary-bg-subtle: #ededed;
  --bs-primary-border-subtle: #d4d4d4;
  --bs-primary-text-emphasis: #111111;

  --bs-secondary: #737373;
  --bs-secondary-rgb: 115, 115, 115;
  --bs-secondary-bg-subtle: #f3f3f3;
  --bs-secondary-border-subtle: #d9d9d9;

  --bs-success: #111111;
  --bs-success-rgb: 17, 17, 17;
  --bs-success-bg-subtle: #f0f0f0;
  --bs-success-border-subtle: #dcdcdc;

  --bs-info: #2f2f2f;
  --bs-info-rgb: 47, 47, 47;
  --bs-info-bg-subtle: #f4f4f4;
  --bs-info-border-subtle: #dedede;

  --bs-warning: #4d4d4d;
  --bs-warning-rgb: 77, 77, 77;
  --bs-warning-bg-subtle: #f5f5f5;
  --bs-warning-border-subtle: #dfdfdf;

  --bs-danger: #111111;
  --bs-danger-rgb: 17, 17, 17;
  --bs-danger-bg-subtle: #ffffff;
  --bs-danger-border-subtle: #cccccc;

  --bs-border-color: var(--line);
  --bs-border-color-translucent: rgba(0, 0, 0, 0.08);
  --bs-border-radius: 10px;
  --bs-border-radius-sm: 8px;
  --bs-border-radius-lg: 14px;

  --bs-link-color: #111111;
  --bs-link-color-rgb: 17, 17, 17;
  --bs-link-hover-color: #333333;
  --bs-focus-ring-color: rgba(15, 15, 15, 0.12);
}

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

body {
  margin: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

code {
  background: #f4f4f4;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.16em 0.42em;
  color: var(--ink);
  font-size: 0.85em;
}

pre {
  background: #f8f8f8;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1rem;
  overflow-x: auto;
}

::selection {
  background: #d9d9d9;
  color: #111111;
}

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-thumb {
  background: #d1d1d1;
  border-radius: 999px;
}

::-webkit-scrollbar-thumb:hover {
  background: #aaaaaa;
}

.app-body {
  background: var(--paper-soft);
  min-height: 100vh;
}

.auth-body {
  min-height: 100vh;
  display: flex;
  justify-content: center;
  padding: 3.5rem 1rem;
  background: var(--paper-soft);
}

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

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  width: 256px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--ink);
  border-right: 1px solid #222222;
  color: #d9d9d9;
  z-index: 20;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1.5rem 1.25rem 1.35rem;
}

.brand-mark {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  background: #ffffff;
  color: var(--ink);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: -0.04em;
}

.brand-name {
  font-weight: 700;
  font-size: 1.05rem;
  color: #ffffff;
  letter-spacing: -0.02em;
}

.side-nav {
  flex: 1;
  overflow-y: auto;
  padding: 0.15rem 0.9rem 0.8rem;
}

.side-section {
  padding: 1.15rem 0.65rem 0.4rem;
  font-size: 0.62rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: #5e5e5e;
}

.side-link {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin: 0.12rem 0;
  padding: 0.6rem 0.75rem;
  border-radius: 10px;
  color: #c7c7c7;
  font-size: 0.88rem;
  font-weight: 500;
  text-decoration: none;
  transition: background 0.1s ease, color 0.1s ease;
}

.side-link:hover {
  background: #1c1c1c;
  color: #ffffff;
  text-decoration: none;
}

.side-link.active,
.side-link.active:hover {
  background: #ffffff;
  color: var(--ink);
  font-weight: 600;
}

.side-foot {
  margin-top: auto;
  padding: 1rem 1.2rem 1.2rem;
  border-top: 1px solid #222222;
}

.side-user {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin-bottom: 0.85rem;
}

.avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  background: #2a2a2a;
  color: #ffffff;
  font-size: 0.78rem;
  font-weight: 700;
}

.side-user-email {
  font-size: 0.8rem;
  font-weight: 500;
  color: #d9d9d9;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.side-user-role {
  font-size: 0.64rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #6b6b6b;
}

.side-logout {
  display: block;
  padding: 0.55rem 0.75rem;
  border: 1px solid #383838;
  border-radius: 10px;
  color: #c7c7c7;
  font-size: 0.82rem;
  font-weight: 500;
  text-align: center;
  text-decoration: none;
  transition: background 0.1s ease, color 0.1s ease, border-color 0.1s ease;
}

.side-logout:hover {
  background: #ffffff;
  border-color: #ffffff;
  color: var(--ink);
  text-decoration: none;
}

.app-main {
  flex: 1;
  min-width: 0;
  padding: 2.5rem 2.8rem 4rem;
  background: var(--paper-soft);
}

/* ---- Auth ---- */
.auth-shell {
  width: 100%;
  max-width: 400px;
}

.auth-card {
  padding: 2.75rem 2.5rem 2.5rem;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.03);
}

.auth-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.9rem;
  margin-bottom: 2.1rem;
}

.auth-logo-mark {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: var(--ink);
  color: #ffffff;
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.04em;
}

.auth-logo-name {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.auth-sub {
  margin: -0.8rem 0 1.75rem;
  font-size: 0.855rem;
  text-align: center;
  color: var(--muted);
}

/* ---- Typography ---- */
h1, h2, h3, h4, h5, h6 {
  color: var(--ink);
}

h2 {
  font-size: 1.45rem;
  font-weight: 650;
  letter-spacing: -0.025em;
}

.text-muted {
  color: var(--muted) !important;
}

.text-danger,
.text-success {
  color: var(--ink) !important;
}

.text-warning {
  color: #505050 !important;
}

.fw-bold,
.fw-semibold {
  color: var(--ink);
}

.fw-bold {
  font-weight: 700;
}

.lead {
  font-size: 1rem;
  color: #555555;
}

/* ---- Cards ---- */
.card {
  overflow: hidden;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.02);
}

.card-header {
  padding: 0.95rem 1.2rem;
  background: #ffffff;
  border-bottom: 1px solid #f0f0f0;
  font-size: 0.89rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.card-title {
  margin-bottom: 0.25rem;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #888888;
}

.card-title small {
  font: inherit;
  color: inherit;
  text-transform: inherit;
  letter-spacing: inherit;
}

.text-bg-primary,
.text-bg-success,
.text-bg-danger,
.text-bg-warning,
.text-bg-info,
.text-bg-secondary {
  background: #111111 !important;
  color: #ffffff !important;
}

/* ---- Tables ---- */
.table {
  --bs-table-bg: transparent;
  color: var(--ink);
  font-size: 0.89rem;
}

.table > :not(caption) > * > * {
  padding: 0.8rem 1rem;
  border-color: #f3f3f3;
  background-color: transparent;
}

.table thead th {
  background: #fcfcfc;
  border-bottom: 1px solid #eaeaea;
  color: #7a7a7a;
  font-size: 0.69rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  white-space: nowrap;
}

.table-light {
  --bs-table-bg: transparent;
  --bs-table-accent-bg: transparent;
  background: transparent;
}

.table tbody tr:hover,
.table-hover > tbody > tr:hover > * {
  background: #f8f8f8;
}

.table a {
  color: var(--ink);
  font-weight: 500;
  text-decoration: none;
}

.table a:hover {
  text-decoration: underline;
}

.table-sm > :not(caption) > * > * {
  padding: 0.55rem 0.75rem;
}

.table td,
.table th {
  vertical-align: middle;
}

/* ---- Forms ---- */
.form-control,
.form-select,
textarea {
  padding: 0.6rem 0.85rem;
  border: 1px solid #d4d4d4;
  border-radius: 10px;
  font-size: 0.89rem;
  color: var(--ink);
  background-color: #ffffff;
  transition: border-color 0.12s ease, box-shadow 0.12s ease;
}

.form-control:focus,
.form-select:focus,
textarea:focus {
  border-color: var(--ink);
  outline: none;
  box-shadow: 0 0 0 0.22rem rgba(15, 15, 15, 0.06);
}

.form-control-sm,
.form-select-sm {
  padding: 0.35rem 0.65rem;
  border-radius: 8px;
  font-size: 0.82rem;
}

.form-label {
  margin-bottom: 0.35rem;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--ink);
}

.form-text {
  font-size: 0.78rem;
  color: var(--muted);
}

.form-check-input {
  width: 1.05em;
  height: 1.05em;
  margin-top: 0.15em;
  border: 1px solid #cfcfcf;
  border-radius: 4px;
}

.form-check-input:checked {
  background-color: var(--ink);
  border-color: var(--ink);
}

.form-check-input:focus {
  border-color: var(--ink);
  box-shadow: 0 0 0 0.18rem rgba(15, 15, 15, 0.08);
}

.form-check-label {
  font-size: 0.89rem;
  color: var(--ink);
}

.form-control[type="file"] {
  padding: 1.2rem;
  border: 1px dashed #c7c7c7;
  border-radius: 12px;
  background: #fafafa;
}

.form-control[type="file"]:hover {
  background: #f4f4f4;
  border-color: #aaaaaa;
}

.form-control::placeholder {
  color: #bbbbbb;
}

/* ---- Buttons ---- */
.btn {
  padding: 0.55rem 1.15rem;
  border-radius: 10px;
  font-size: 0.865rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: background 0.12s ease, border-color 0.12s ease, color 0.12s ease, box-shadow 0.12s ease;
}

.btn-primary,
.btn-success {
  background: var(--ink);
  border: 1px solid var(--ink);
  color: #ffffff;
}

.btn-primary:hover,
.btn-primary:focus-visible,
.btn-success:hover {
  background: var(--ink-soft);
  border-color: var(--ink-soft);
  color: #ffffff;
}

.btn-primary:active,
.btn-success:active {
  background: #000000;
  border-color: #000000;
  color: #ffffff;
}

.btn-danger {
  background: #ffffff;
  border: 1px solid #c0c0c0;
  color: var(--ink);
}

.btn-danger:hover {
  background: #f5f5f5;
  border-color: #999999;
}

.btn-warning,
.btn-info {
  background: #f0f0f0;
  border: 1px solid #d5d5d5;
  color: var(--ink);
}

.btn-warning:hover,
.btn-info:hover {
  background: #e6e6e6;
  border-color: #cccccc;
}

.btn-secondary {
  background: #f2f2f2;
  border: 1px solid #d9d9d9;
  color: var(--ink);
}

.btn-secondary:hover {
  background: #e6e6e6;
  border-color: #c2c2c2;
}

.btn-light {
  background: #f4f4f4;
  border: 1px solid #e0e0e0;
  color: var(--ink);
}

.btn-light:hover {
  background: #eaeaea;
  border-color: #cccccc;
}

.btn-dark {
  background: #111111;
  border: 1px solid #111111;
  color: #ffffff;
}

.btn-dark:hover {
  background: var(--ink-soft);
  border-color: var(--ink-soft);
  color: #ffffff;
}

.btn-outline-primary {
  background: #ffffff;
  border: 1px solid #d4d4d4;
  color: var(--ink);
}

.btn-outline-primary:hover,
.btn-outline-primary:focus-visible {
  background: var(--ink);
  border-color: var(--ink);
  color: #ffffff;
}

.btn-outline-secondary {
  background: #ffffff;
  border: 1px solid #d9d9d9;
  color: #555555;
}

.btn-outline-secondary:hover {
  background: #f5f5f5;
  border-color: #bbbbbb;
  color: var(--ink);
}

.btn-outline-success,
.btn-outline-dark {
  background: #ffffff;
  border: 1px solid #c0c0c0;
  color: var(--ink);
}

.btn-outline-success:hover,
.btn-outline-dark:hover {
  background: var(--ink);
  border-color: var(--ink);
  color: #ffffff;
}

.btn-outline-danger {
  background: #ffffff;
  border: 1px solid #c0c0c0;
  color: var(--ink);
}

.btn-outline-danger:hover {
  background: #f5f5f5;
  border-color: #999999;
  color: var(--ink);
}

.btn-outline-warning {
  background: #ffffff;
  border: 1px solid #d5d5d5;
  color: var(--ink);
}

.btn-outline-warning:hover {
  background: #f0f0f0;
  border-color: #cccccc;
  color: var(--ink);
}

.btn-outline-info {
  background: #ffffff;
  border: 1px solid #d5d5d5;
  color: #444444;
}

.btn-outline-info:hover {
  background: #f2f2f2;
  border-color: #bfbfbf;
  color: var(--ink);
}

.btn-outline-light {
  background: transparent;
  border: 1px solid #444444;
  color: #dddddd;
}

.btn-outline-light:hover {
  background: #ffffff;
  border-color: #ffffff;
  color: var(--ink);
}

.btn-sm {
  padding: 0.35rem 0.85rem;
  border-radius: 8px;
  font-size: 0.8rem;
}

.btn-lg {
  padding: 0.7rem 1.4rem;
  border-radius: 12px;
  font-size: 0.95rem;
}

.btn[disabled],
.btn.disabled {
  opacity: 0.45;
  pointer-events: none;
}

/* ---- Badges ---- */
.badge {
  padding: 0.35em 0.7em;
  border-radius: 8px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.badge.bg-primary,
.badge.bg-success,
.badge.bg-dark {
  background: #111111 !important;
  color: #ffffff !important;
}

.badge.bg-secondary {
  background: #ededed !important;
  color: #111111 !important;
}

.badge.bg-info {
  background: #f0f0f0 !important;
  color: #111111 !important;
}

.badge.bg-warning,
.badge.bg-light {
  background: #f3f3f3 !important;
  color: #242424 !important;
}

.badge.bg-danger {
  background: #ffffff !important;
  border: 1px solid #cccccc;
  color: #111111 !important;
}

.badge.text-dark {
  color: #111111 !important;
}

.badge.rounded-pill {
  padding-right: 0.65em;
  padding-left: 0.65em;
  border-radius: 999px;
}

.badge-status {
  font-size: 0.7rem;
}

/* ---- Alerts ---- */
.alert {
  margin-bottom: 1rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  font-size: 0.89rem;
}

.alert-warning,
.alert-info,
.alert-success {
  background: #f6f6f6;
  border-color: #e2e2e2;
  color: #111;
}

.alert-danger {
  background: #ffffff;
  border-color: #bbbbbb;
  color: #111;
}

.alert .alert-link {
  color: #111;
  font-weight: 600;
  text-decoration: underline;
}

.alert .btn-close {
  filter: invert(1);
}

.btn-close {
  filter: invert(1);
  opacity: 0.6;
}

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

/* ---- Navigation ---- */
.breadcrumb {
  margin-bottom: 0.25rem;
  font-size: 0.82rem;
}

.breadcrumb-item a {
  color: #555555;
  text-decoration: none;
}

.breadcrumb-item a:hover {
  color: var(--ink);
  text-decoration: underline;
}

.breadcrumb-item.active {
  color: var(--muted);
  font-weight: 500;
}

.breadcrumb-item + .breadcrumb-item::before {
  color: #c4c4c4;
}

.nav-pills {
  gap: 0.55rem;
}

.nav-pills .nav-link {
  padding: 0.55rem 0.85rem;
  border: 1px solid transparent;
  border-radius: 999px;
  background: #f2f2f2;
  color: #555555;
  font-size: 0.81rem;
  font-weight: 600;
}

.nav-pills .nav-link.active,
.nav-pills .show > .nav-link {
  background: var(--ink);
  border-color: var(--ink);
  color: #ffffff;
}

.nav-pills .nav-link.disabled,
.nav-pills .nav-link.text-muted {
  background: transparent;
  border-color: transparent;
  color: #bbbbbb;
}

.list-group {
  border: 1px solid var(--line);
  border-radius: 14px;
}

.list-group-item {
  background: #ffffff;
  border-color: #f0f0f0;
}

.list-group-item.active {
  background: var(--ink);
  border-color: var(--ink);
  color: #ffffff;
}

/* ---- Overlays ---- */
.dropdown-menu,
.modal-content,
.popover {
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.06);
}

.dropdown-menu {
  padding: 0.35rem;
  font-size: 0.865rem;
}

.dropdown-item {
  padding: 0.45rem 0.85rem;
  border-radius: 8px;
  color: var(--ink);
}

.dropdown-item:hover,
.dropdown-item:focus {
  background: #f3f3f3;
  color: var(--ink);
}

.dropdown-item.active,
.dropdown-item:active {
  background: var(--ink);
  color: #ffffff;
}

.modal-header,
.modal-footer {
  border-color: #f0f0f0;
}

.tooltip-inner {
  padding: 0.45rem 0.7rem;
  border-radius: 8px;
  background: var(--ink);
  font-size: 0.78rem;
  font-weight: 500;
}

.page-link {
  margin: 0 0.15rem;
  padding: 0.45rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  font-size: 0.82rem;
  font-weight: 500;
}

.page-item.active .page-link {
  background: var(--ink);
  border-color: var(--ink);
  color: #ffffff;
}

.page-item.disabled .page-link {
  background: #f8f8f8;
  border-color: #eeeeee;
  color: #cccccc;
}

.spinner-border,
.spinner-grow {
  color: var(--ink);
}

/* ---- Helpers ---- */
.page-title {
  margin: 0;
  font-size: 1.55rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.flash-stack {
  margin-bottom: 0.25rem;
}

.table-wrapper {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 14px;
}

.table-wrapper > .table {
  margin-bottom: 0;
}

.preview-box {
  overflow: hidden;
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: 12px;
}

.app-main .card,
.app-main .alert {
  margin-bottom: 1rem;
}

.app-main .card:last-child,
.app-main .alert:last-child {
  margin-bottom: 0;
}

.app-main .card-body p:last-child {
  margin-bottom: 0;
}

.app-main .card-body.py-2 {
  padding-top: 0.65rem !important;
  padding-bottom: 0.65rem !important;
}

.app-main .table .btn {
  white-space: nowrap;
}

/* ---- Responsive ---- */
@media (max-width: 991.98px) {
  .app-shell {
    flex-direction: column;
  }

  .sidebar {
    position: relative;
    width: 100%;
    height: auto;
    border-right: none;
    border-bottom: 1px solid #222222;
  }

  .brand {
    padding: 1rem 1rem 0.35rem;
  }

  .side-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 0.15rem;
    padding: 0.35rem 1rem 0.5rem;
    overflow-y: visible;
  }

  .side-section {
    display: none;
  }

  .side-link {
    padding: 0.5rem 0.7rem;
    border-radius: 8px;
    font-size: 0.82rem;
    white-space: nowrap;
  }

  .side-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    margin-top: 0;
    padding: 0.5rem 1rem 0.85rem;
    border-top: none;
  }

  .side-user {
    min-width: 0;
    margin-bottom: 0;
  }

  .side-user-meta {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    min-width: 0;
  }

  .side-logout {
    flex-shrink: 0;
    padding: 0.4rem 0.75rem;
    font-size: 0.78rem;
  }

  .app-main {
    padding: 1.75rem 1.25rem 3rem;
  }

  .auth-body {
    padding: 1.5rem 1rem;
  }

  .auth-card {
    padding: 2rem 1.5rem 1.75rem;
  }
}

@media (max-width: 575.98px) {
  .app-main {
    padding: 1.25rem 1rem 2.5rem;
  }

  .auth-card {
    padding: 1.75rem 1.25rem 1.5rem;
  }

  .brand-name {
    font-size: 0.95rem;
  }

  .side-link {
    padding: 0.45rem 0.6rem;
    font-size: 0.78rem;
  }

  h2 {
    font-size: 1.3rem;
  }

  .card-header {
    padding: 0.85rem 1rem;
    font-size: 0.85rem;
  }
}

@media print {
  .sidebar,
  .btn {
    display: none !important;
  }

  .app-main {
    padding: 0;
    background: #ffffff;
  }

  .card {
    break-inside: avoid;
    box-shadow: none;
  }
}