:root {
  --app-ink: #1e293b;
  --app-muted: #64748b;
  --app-border: #e2e8f0;
  --app-surface: #ffffff;
  --app-canvas: #f6f8fb;
  --app-primary: #46637f;
  --app-primary-dark: #344e68;
  --app-success: #3f7d68;
  --app-danger: #ae5b5b;
  --app-warning: #b98037;
  --app-radius: 14px;
}

html { min-height: 100%; font-size: 16px; }

body.app-shell {
  min-height: 100vh; margin: 0; background: var(--app-canvas); color: var(--app-ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  display: flex; flex-direction: column;
}

.app-navbar { min-height: 76px; background: rgba(255,255,255,.94); border-bottom: 1px solid var(--app-border); box-shadow: 0 2px 14px rgba(30,41,59,.04); }
.brand-link { color: var(--app-ink) !important; display: inline-flex; align-items: center; gap: .65rem; font-size: 1.05rem; font-weight: 750; letter-spacing: -.02em; }
.brand-mark { width: 30px; height: 30px; display: inline-grid; place-items: center; border-radius: 9px; background: var(--app-primary); color: white; font-size: .95rem; }
.app-navbar .nav-link { color: var(--app-muted) !important; font-size: .9rem; font-weight: 600; padding: .5rem .8rem !important; border-radius: 8px; }
.app-navbar .nav-link:hover, .app-navbar .nav-link:focus { background: #edf2f7; color: var(--app-primary-dark) !important; }
.theme-toggle { min-height: 36px; margin-left: .5rem; padding: .35rem .7rem; border: 1px solid var(--app-border); border-radius: 9px; color: var(--app-muted); background: transparent; font-size: .82rem; font-weight: 700; white-space: nowrap; transition: background-color 160ms ease, border-color 160ms ease, color 160ms ease, transform 160ms ease; }
.theme-toggle:hover, .theme-toggle:focus { background: #edf2f7; border-color: #cbd5e1; color: var(--app-primary-dark); transform: translateY(-1px); }
.theme-toggle:focus-visible { outline: 3px solid rgba(70,99,127,.18); outline-offset: 2px; }
.app-main { flex: 1; padding: 2.5rem 0 3rem; }
.app-footer { padding: 1.25rem 0; border-top: 1px solid var(--app-border); color: var(--app-muted); font-size: .84rem; }
a { color: var(--app-primary-dark); }

.btn { border-radius: 9px; font-size: .9rem; font-weight: 650; padding: .55rem .95rem; transition: transform 160ms ease, box-shadow 160ms ease, background-color 160ms ease; }
.btn:hover { transform: translateY(-1px); }
.btn-primary, .btn-primary:hover, .btn-primary:focus { background: var(--app-primary); border-color: var(--app-primary); }
.btn-primary:hover, .btn-primary:focus { background: var(--app-primary-dark); border-color: var(--app-primary-dark); box-shadow: 0 6px 14px rgba(70,99,127,.2); }
.btn-success { background: var(--app-success); border-color: var(--app-success); }
.btn-success, .btn-success:hover, .btn-success:focus { color: #fff; }
.btn-danger { background: var(--app-danger); border-color: var(--app-danger); }
.btn-warning, .btn-warning:hover, .btn-warning:focus { background: var(--app-warning); border-color: var(--app-warning); color: #1e293b; }
.btn-outline-secondary { border-color: #cbd5e1; color: #475569; }

.form-control, .form-select { border-color: #d7e0ea; border-radius: 9px; color: var(--app-ink); min-height: 42px; }
.form-control:focus, .form-select:focus { border-color: #8da4ba; box-shadow: 0 0 0 .2rem rgba(70,99,127,.13); }
.form-label, label { color: #475569; font-size: .86rem; font-weight: 650; }

.dashboard-hero { display: flex; align-items: end; justify-content: space-between; gap: 1rem; margin-bottom: 1.75rem; }
.page-eyebrow { margin: 0 0 .35rem; color: var(--app-primary); font-size: .74rem; font-weight: 750; letter-spacing: .12em; text-transform: uppercase; }
.page-title { margin: 0; color: var(--app-ink); font-size: clamp(1.8rem,4vw,2.45rem); font-weight: 750; letter-spacing: -.045em; }
.page-subtitle { margin: .5rem 0 0; color: var(--app-muted); }
.task-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: 1.25rem; }
.sort-control { display: flex; align-items: center; gap: .55rem; color: var(--app-muted); font-size: .87rem; }
.sort-control .form-select { min-height: 38px; width: auto; }

.todo-card { border: 1px solid var(--app-border); border-radius: var(--app-radius); background: var(--app-surface); box-shadow: 0 4px 16px rgba(30,41,59,.04); overflow: hidden; margin-bottom: .85rem; transition: box-shadow 180ms ease, transform 180ms ease; }
.todo-card:hover { box-shadow: 0 10px 24px rgba(30,41,59,.08); transform: translateY(-1px); }
.todo-card-header, .todo-card-footer { padding: .85rem 1.1rem; background: transparent; border: 0; }
.todo-card-header { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.todo-title { font-size: 1rem; font-weight: 700; color: var(--app-ink); }
.todo-created, .todo-meta { color: var(--app-muted); font-size: .82rem; }
.todo-card-body { padding: 0 1.1rem 1rem; }
.todo-description { margin: .75rem 0 0; color: #475569; line-height: 1.55; }
.todo-details { display: flex; flex-wrap: wrap; gap: .5rem 1rem; align-items: center; }
.priority-badge { display: inline-flex; align-items: center; border-radius: 99px; padding: .28rem .62rem; font-size: .75rem; font-weight: 700; }
.priority-bottom, .priority-low { background: #eef2f7; color: #64748b; }
.priority-normal { background: #e8f0f6; color: #46637f; }
.priority-high { background: #fbf0df; color: #9a6627; }
.priority-top { background: #f9e8e8; color: #a64f4f; }
.todo-card-footer { display: flex; justify-content: flex-end; gap: .55rem; border-top: 1px solid #edf2f7; }
.todo-card-footer .btn { padding: .4rem .7rem; font-size: .82rem; }
.empty-state { padding: 3rem 1.5rem; text-align: center; border: 1px dashed #cbd5e1; border-radius: var(--app-radius); color: var(--app-muted); background: rgba(255,255,255,.6); }
.welcome-hero { display: grid; grid-template-columns: minmax(0, .88fr) minmax(360px, 1.12fr); overflow: hidden; border: 1px solid var(--app-border); border-radius: 20px; background: var(--app-surface); box-shadow: 0 12px 34px rgba(30,41,59,.06); }
.welcome-copy { display: flex; flex-direction: column; align-items: flex-start; justify-content: center; padding: clamp(2.5rem, 6vw, 5.5rem); }
.welcome-copy .page-subtitle { max-width: 29rem; margin-bottom: 1.65rem; font-size: 1rem; line-height: 1.65; }
.welcome-visual { min-height: 390px; background: #eef3f6; }
.welcome-visual img { display: block; width: 100%; height: 100%; object-fit: cover; }
.pagination { gap: .35rem; margin-top: 1.5rem; }
.page-link { border: 0; border-radius: 8px; color: var(--app-primary-dark); background: transparent; }
.page-item.active .page-link { background: var(--app-primary); }
.app-modal .modal-content, .edit-card { border: 0; border-radius: var(--app-radius); box-shadow: 0 20px 48px rgba(30,41,59,.16); }
.app-modal .modal-header, .app-modal .modal-footer, .edit-card .card-header { border-color: var(--app-border); padding: 1rem 1.25rem; }
.app-modal .modal-body, .edit-card .card-body { padding: 1.25rem; }

.cookie-consent {
  position: fixed;
  right: clamp(1rem, 3vw, 2rem);
  bottom: clamp(1rem, 3vw, 2rem);
  left: clamp(1rem, 3vw, 2rem);
  z-index: 1080;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 1rem;
  max-width: 980px;
  margin: 0 auto;
  padding: 1rem;
  color: var(--app-ink);
  background: rgba(255, 255, 255, .98);
  border: 1px solid var(--app-border);
  border-radius: var(--app-radius);
  box-shadow: 0 18px 46px rgba(30,41,59,.18);
}

.cookie-consent__mark {
  width: 38px;
  height: 38px;
  display: inline-grid;
  place-items: center;
  border-radius: 10px;
  background: var(--app-primary);
  color: #fff;
  font-weight: 800;
  line-height: 1;
}

.cookie-consent__title {
  margin: 0 0 .2rem;
  color: var(--app-ink);
  font-size: .96rem;
  font-weight: 750;
}

.cookie-consent__text {
  margin: 0;
  color: #475569;
  font-size: .9rem;
  line-height: 1.45;
}

.cookie-consent__text a {
  color: var(--app-primary-dark);
  font-weight: 700;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.cookie-consent__button {
  min-height: 42px;
  padding: .55rem 1rem;
  border: 1px solid var(--app-primary);
  border-radius: 9px;
  color: #fff;
  background: var(--app-primary);
  font-size: .9rem;
  font-weight: 750;
  box-shadow: 0 8px 18px rgba(70,99,127,.22);
  transition: background-color 160ms ease, border-color 160ms ease, transform 160ms ease, box-shadow 160ms ease;
}

.cookie-consent__button:hover,
.cookie-consent__button:focus {
  background: var(--app-primary-dark);
  border-color: var(--app-primary-dark);
  box-shadow: 0 10px 22px rgba(70,99,127,.26);
  transform: translateY(-1px);
}

.cookie-consent__button:focus-visible {
  outline: 3px solid rgba(70,99,127,.24);
  outline-offset: 2px;
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --app-ink: #e5edf5;
    --app-muted: #9fb0c3;
    --app-border: #253345;
    --app-surface: #121b27;
    --app-canvas: #0c121a;
    --app-primary: #7fa0bf;
    --app-primary-dark: #a8c2db;
    --app-success: #6aa58f;
    --app-danger: #d17b7b;
    --app-warning: #d4a45d;
  }

  body.app-shell { background: var(--app-canvas); color: var(--app-ink); }
  .app-navbar { background: rgba(18,27,39,.94); box-shadow: 0 2px 18px rgba(0,0,0,.25); }
  .app-navbar .nav-link:hover,
  .app-navbar .nav-link:focus { background: #1a2635; color: var(--app-primary-dark) !important; }
  .brand-mark, .btn-primary, .btn-primary:hover, .btn-primary:focus,
  .btn-success, .btn-success:hover, .btn-success:focus,
  .btn-warning, .btn-warning:hover, .btn-warning:focus,
  .page-item.active .page-link, .cookie-consent__mark, .cookie-consent__button {
    color: #07111d;
  }
  a, .page-link, .cookie-consent__text a { color: var(--app-primary-dark); }
  .bg-white, .card, .modal-content, .dropdown-menu { background-color: var(--app-surface) !important; color: var(--app-ink); }
  .text-dark { color: var(--app-ink) !important; }
  .text-muted { color: var(--app-muted) !important; }
  .border, .border-top, .border-bottom, .border-left, .border-right { border-color: var(--app-border) !important; }
  .btn-outline-secondary { border-color: #3a4a5d; color: var(--app-muted); }
  .btn-outline-secondary:hover, .btn-outline-secondary:focus { background: #1a2635; color: var(--app-ink); }
  .form-control, .form-select {
    background-color: #0f1722;
    border-color: #2d3c50;
    color: var(--app-ink);
  }
  .form-control:focus, .form-select:focus {
    background-color: #111c29;
    color: var(--app-ink);
    border-color: #6987a5;
    box-shadow: 0 0 0 .2rem rgba(127,160,191,.18);
  }
  .form-control::placeholder { color: #718197; }
  .form-label, label, .todo-description, .cookie-consent__text { color: var(--app-muted); }
  .todo-card { box-shadow: 0 6px 20px rgba(0,0,0,.24); }
  .todo-card:hover { box-shadow: 0 12px 28px rgba(0,0,0,.32); }
  .todo-card-footer { border-top-color: var(--app-border); }
  .empty-state { background: rgba(18,27,39,.72); border-color: #35465b; }
  .welcome-visual { background: #101a25; }
  .welcome-visual img { opacity: .86; }
  .table { color: var(--app-ink); border-color: var(--app-border); }
  .table-striped > tbody > tr:nth-of-type(odd) > * { color: var(--app-ink); background-color: rgba(255,255,255,.035); }
  .table-bordered > :not(caption) > * { border-color: var(--app-border); }
  .modal-header, .modal-footer, .card-header { border-color: var(--app-border); }
  .priority-bottom, .priority-low { background: #1d2938; color: #aeb9c7; }
  .priority-normal { background: #1c3145; color: #a8c2db; }
  .priority-high { background: #3a2c18; color: #e3b873; }
  .priority-top { background: #3a2025; color: #e89999; }
  .cookie-consent {
    background: rgba(18,27,39,.98);
    box-shadow: 0 18px 46px rgba(0,0,0,.42);
  }
  .cookie-consent__button:focus-visible { outline-color: rgba(168,194,219,.28); }
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --app-ink: #e5edf5;
  --app-muted: #9fb0c3;
  --app-border: #253345;
  --app-surface: #121b27;
  --app-canvas: #0c121a;
  --app-primary: #7fa0bf;
  --app-primary-dark: #a8c2db;
  --app-success: #6aa58f;
  --app-danger: #d17b7b;
  --app-warning: #d4a45d;
}

[data-theme="dark"] body.app-shell { background: var(--app-canvas); color: var(--app-ink); }
[data-theme="dark"] .app-navbar { background: rgba(18,27,39,.94); box-shadow: 0 2px 18px rgba(0,0,0,.25); }
[data-theme="dark"] .app-navbar .nav-link:hover,
[data-theme="dark"] .app-navbar .nav-link:focus,
[data-theme="dark"] .theme-toggle:hover,
[data-theme="dark"] .theme-toggle:focus { background: #1a2635; color: var(--app-primary-dark) !important; }
[data-theme="dark"] .brand-mark,
[data-theme="dark"] .btn-primary,
[data-theme="dark"] .btn-primary:hover,
[data-theme="dark"] .btn-primary:focus,
[data-theme="dark"] .btn-success,
[data-theme="dark"] .btn-success:hover,
[data-theme="dark"] .btn-success:focus,
[data-theme="dark"] .btn-warning,
[data-theme="dark"] .btn-warning:hover,
[data-theme="dark"] .btn-warning:focus,
[data-theme="dark"] .page-item.active .page-link,
[data-theme="dark"] .cookie-consent__mark,
[data-theme="dark"] .cookie-consent__button { color: #07111d; }
[data-theme="dark"] a,
[data-theme="dark"] .page-link,
[data-theme="dark"] .cookie-consent__text a { color: var(--app-primary-dark); }
[data-theme="dark"] .bg-white,
[data-theme="dark"] .card,
[data-theme="dark"] .modal-content,
[data-theme="dark"] .dropdown-menu { background-color: var(--app-surface) !important; color: var(--app-ink); }
[data-theme="dark"] .text-dark { color: var(--app-ink) !important; }
[data-theme="dark"] .text-muted { color: var(--app-muted) !important; }
[data-theme="dark"] .border,
[data-theme="dark"] .border-top,
[data-theme="dark"] .border-bottom,
[data-theme="dark"] .border-left,
[data-theme="dark"] .border-right { border-color: var(--app-border) !important; }
[data-theme="dark"] .btn-outline-secondary,
[data-theme="dark"] .theme-toggle { border-color: #3a4a5d; color: var(--app-muted); }
[data-theme="dark"] .btn-outline-secondary:hover,
[data-theme="dark"] .btn-outline-secondary:focus { background: #1a2635; color: var(--app-ink); }
[data-theme="dark"] .form-control,
[data-theme="dark"] .form-select { background-color: #0f1722; border-color: #2d3c50; color: var(--app-ink); }
[data-theme="dark"] .form-control:focus,
[data-theme="dark"] .form-select:focus { background-color: #111c29; color: var(--app-ink); border-color: #6987a5; box-shadow: 0 0 0 .2rem rgba(127,160,191,.18); }
[data-theme="dark"] .form-control::placeholder { color: #718197; }
[data-theme="dark"] .form-label,
[data-theme="dark"] label,
[data-theme="dark"] .todo-description,
[data-theme="dark"] .cookie-consent__text { color: var(--app-muted); }
[data-theme="dark"] .todo-card { box-shadow: 0 6px 20px rgba(0,0,0,.24); }
[data-theme="dark"] .todo-card:hover { box-shadow: 0 12px 28px rgba(0,0,0,.32); }
[data-theme="dark"] .todo-card-footer { border-top-color: var(--app-border); }
[data-theme="dark"] .empty-state { background: rgba(18,27,39,.72); border-color: #35465b; }
[data-theme="dark"] .welcome-visual { background: #101a25; }
[data-theme="dark"] .welcome-visual img { opacity: .86; }
[data-theme="dark"] .table { color: var(--app-ink); border-color: var(--app-border); }
[data-theme="dark"] .table-striped > tbody > tr:nth-of-type(odd) > * { color: var(--app-ink); background-color: rgba(255,255,255,.035); }
[data-theme="dark"] .table-bordered > :not(caption) > * { border-color: var(--app-border); }
[data-theme="dark"] .modal-header,
[data-theme="dark"] .modal-footer,
[data-theme="dark"] .card-header { border-color: var(--app-border); }
[data-theme="dark"] .priority-bottom,
[data-theme="dark"] .priority-low { background: #1d2938; color: #aeb9c7; }
[data-theme="dark"] .priority-normal { background: #1c3145; color: #a8c2db; }
[data-theme="dark"] .priority-high { background: #3a2c18; color: #e3b873; }
[data-theme="dark"] .priority-top { background: #3a2025; color: #e89999; }
[data-theme="dark"] .cookie-consent { background: rgba(18,27,39,.98); box-shadow: 0 18px 46px rgba(0,0,0,.42); }
[data-theme="dark"] .cookie-consent__button:focus-visible,
[data-theme="dark"] .theme-toggle:focus-visible { outline-color: rgba(168,194,219,.28); }

:root[data-theme="light"] {
  color-scheme: light;
  --app-ink: #1e293b;
  --app-muted: #64748b;
  --app-border: #e2e8f0;
  --app-surface: #ffffff;
  --app-canvas: #f6f8fb;
  --app-primary: #46637f;
  --app-primary-dark: #344e68;
  --app-success: #3f7d68;
  --app-danger: #ae5b5b;
  --app-warning: #b98037;
}

[data-theme="light"] body.app-shell { background: var(--app-canvas); color: var(--app-ink); }
[data-theme="light"] .app-navbar { background: rgba(255,255,255,.94); box-shadow: 0 2px 14px rgba(30,41,59,.04); }
[data-theme="light"] .app-navbar .nav-link:hover,
[data-theme="light"] .app-navbar .nav-link:focus,
[data-theme="light"] .theme-toggle:hover,
[data-theme="light"] .theme-toggle:focus { background: #edf2f7; color: var(--app-primary-dark) !important; }
[data-theme="light"] .brand-mark,
[data-theme="light"] .btn-primary,
[data-theme="light"] .btn-primary:hover,
[data-theme="light"] .btn-primary:focus,
[data-theme="light"] .btn-success,
[data-theme="light"] .btn-success:hover,
[data-theme="light"] .btn-success:focus,
[data-theme="light"] .page-item.active .page-link,
[data-theme="light"] .cookie-consent__mark,
[data-theme="light"] .cookie-consent__button { color: #fff; }
[data-theme="light"] .btn-warning,
[data-theme="light"] .btn-warning:hover,
[data-theme="light"] .btn-warning:focus { color: #1e293b; }
[data-theme="light"] a,
[data-theme="light"] .page-link,
[data-theme="light"] .cookie-consent__text a { color: var(--app-primary-dark); }
[data-theme="light"] .bg-white,
[data-theme="light"] .card,
[data-theme="light"] .modal-content,
[data-theme="light"] .dropdown-menu { background-color: var(--app-surface) !important; color: var(--app-ink); }
[data-theme="light"] .text-dark { color: var(--app-ink) !important; }
[data-theme="light"] .text-muted { color: var(--app-muted) !important; }
[data-theme="light"] .btn-outline-secondary,
[data-theme="light"] .theme-toggle { border-color: #cbd5e1; color: #475569; }
[data-theme="light"] .form-control,
[data-theme="light"] .form-select { background-color: #fff; border-color: #d7e0ea; color: var(--app-ink); }
[data-theme="light"] .form-label,
[data-theme="light"] label,
[data-theme="light"] .todo-description,
[data-theme="light"] .cookie-consent__text { color: #475569; }
[data-theme="light"] .todo-card { box-shadow: 0 4px 16px rgba(30,41,59,.04); }
[data-theme="light"] .todo-card:hover { box-shadow: 0 10px 24px rgba(30,41,59,.08); }
[data-theme="light"] .todo-card-footer { border-top-color: #edf2f7; }
[data-theme="light"] .empty-state { background: rgba(255,255,255,.6); border-color: #cbd5e1; }
[data-theme="light"] .welcome-visual { background: #eef3f6; }
[data-theme="light"] .welcome-visual img { opacity: 1; }
[data-theme="light"] .table { color: var(--app-ink); border-color: var(--app-border); }
[data-theme="light"] .table-striped > tbody > tr:nth-of-type(odd) > * { color: var(--app-ink); background-color: rgba(0,0,0,.05); }
[data-theme="light"] .table-bordered > :not(caption) > * { border-color: var(--app-border); }
[data-theme="light"] .priority-bottom,
[data-theme="light"] .priority-low { background: #eef2f7; color: #64748b; }
[data-theme="light"] .priority-normal { background: #e8f0f6; color: #46637f; }
[data-theme="light"] .priority-high { background: #fbf0df; color: #9a6627; }
[data-theme="light"] .priority-top { background: #f9e8e8; color: #a64f4f; }
[data-theme="light"] .cookie-consent { background: rgba(255,255,255,.98); box-shadow: 0 18px 46px rgba(30,41,59,.18); }

@media (max-width: 767.98px) {
  .app-main { padding-top: 1.5rem; }
  .dashboard-hero, .task-toolbar { align-items: stretch; flex-direction: column; }
  .task-toolbar .btn, .sort-control, .sort-control .form-select { width: 100%; }
  .todo-card-header { align-items: flex-start; flex-direction: column; gap: .35rem; }
  .todo-card-footer { justify-content: stretch; }
  .todo-card-footer .btn { flex: 1; }
  .welcome-hero { grid-template-columns: 1fr; }
  .welcome-copy { padding: 2.5rem 1.5rem 2.75rem; }
  .welcome-visual { min-height: 250px; order: -1; }
  .cookie-consent { grid-template-columns: 1fr; gap: .8rem; align-items: start; }
  .cookie-consent__mark { display: none; }
  .cookie-consent__button { width: 100%; }
}