:root {
  --font-sans: "Avenir Next", "Segoe UI", "Gill Sans", Calibri, sans-serif;
  --font-display: "Palatino Linotype", "Book Antiqua", Palatino, Georgia, serif;

  --bg: #f3f6f4;
  --bg-accent: #e7efea;
  --surface: #ffffff;
  --surface-elevated: #fbfcfb;
  --border: #d5ded8;
  --border-strong: #b7c4bc;
  --text: #1c2a24;
  --text-secondary: #3d4f46;
  --text-muted: #6b7c73;
  --primary: #0f6b57;
  --primary-hover: #0b5646;
  --primary-soft: #d8efe8;
  --success: #1f7a45;
  --success-soft: #ddf3e6;
  --warning: #9a6b12;
  --warning-soft: #f7ecd3;
  --danger: #a33b32;
  --danger-soft: #f8e2df;
  --info: #1f5f8b;
  --info-soft: #dceef8;
  --focus: #0f6b57;
  --shadow: 0 10px 30px rgba(28, 42, 36, 0.08);
  --radius: 14px;
  --radius-sm: 10px;
  --nav-width: 260px;
  --bottom-nav-height: 68px;
  --transition: 160ms ease;
}

html.dark {
  --bg: #121816;
  --bg-accent: #1a221e;
  --surface: #1b2420;
  --surface-elevated: #222c27;
  --border: #2f3c36;
  --border-strong: #44544c;
  --text: #eef4f0;
  --text-secondary: #c6d2cb;
  --text-muted: #93a39a;
  --primary: #3ecfad;
  --primary-hover: #62dbbc;
  --primary-soft: #18352e;
  --success: #57c788;
  --success-soft: #1c3226;
  --warning: #e0b45a;
  --warning-soft: #3a3018;
  --danger: #ef8579;
  --danger-soft: #3a221f;
  --info: #74b7e3;
  --info-soft: #1d303b;
  --focus: #3ecfad;
  --shadow: 0 12px 34px rgba(0, 0, 0, 0.35);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-sans);
  color: var(--text);
  background:
    radial-gradient(circle at top left, var(--bg-accent), transparent 40%),
    linear-gradient(180deg, var(--bg), var(--bg-accent));
  line-height: 1.5;
}

a {
  color: var(--primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

img {
  max-width: 100%;
  display: block;
}

button,
input,
select,
textarea {
  font: inherit;
}

:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--focus) 55%, white);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--primary);
  color: white;
  padding: 0.75rem 1rem;
  z-index: 1000;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

.container {
  width: min(1120px, calc(100% - 2rem));
  margin-inline: auto;
}

.app-shell {
  display: grid;
  grid-template-columns: var(--nav-width) 1fr;
  min-height: 100vh;
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 1.5rem 1.1rem;
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  border-right: 1px solid var(--border);
  backdrop-filter: blur(10px);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text);
  text-decoration: none;
}

.brand:hover {
  text-decoration: none;
}

.brand-mark {
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: linear-gradient(145deg, var(--primary), color-mix(in srgb, var(--primary) 50%, #0a3d33));
  color: white;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.brand-name {
  font-family: var(--font-display);
  font-size: 1.55rem;
  line-height: 1;
}

.nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.35rem;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.75rem 0.85rem;
  border-radius: 12px;
  color: var(--text-secondary);
  text-decoration: none;
  transition: background var(--transition), color var(--transition);
}

.nav-link:hover,
.nav-link.is-active {
  background: var(--primary-soft);
  color: var(--primary);
  text-decoration: none;
}

.sidebar-footer {
  margin-top: auto;
  display: grid;
  gap: 0.75rem;
}

.user-chip {
  padding: 0.85rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-elevated);
}

.user-chip strong {
  display: block;
}

.user-chip span {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.main {
  min-width: 0;
  padding: 1.5rem 1.5rem 6rem;
}

.page-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.5rem;
  align-items: flex-end;
}

.page-header h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 2.5vw, 2.2rem);
}

.page-header p {
  margin: 0.35rem 0 0;
  color: var(--text-muted);
}

.header-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.15rem;
}

.card + .card {
  margin-top: 1rem;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 0.9rem;
  margin-bottom: 1.25rem;
}

.metric {
  padding: 1rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
}

.metric span {
  display: block;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.metric strong {
  display: block;
  margin-top: 0.35rem;
  font-size: 1.6rem;
}

.btn {
  appearance: none;
  border: 1px solid transparent;
  border-radius: 12px;
  padding: 0.7rem 1rem;
  background: var(--primary);
  color: white;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  min-height: 44px;
  text-decoration: none;
  transition: background var(--transition), transform var(--transition), opacity var(--transition);
}

.btn:hover {
  background: var(--primary-hover);
  text-decoration: none;
}

.btn:disabled,
.btn.is-loading {
  opacity: 0.7;
  pointer-events: none;
}

.btn-secondary {
  background: var(--surface);
  color: var(--text);
  border-color: var(--border-strong);
}

.btn-secondary:hover {
  background: var(--surface-elevated);
}

.btn-danger {
  background: var(--danger);
}

.btn-danger:hover {
  background: color-mix(in srgb, var(--danger) 85%, black);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: transparent;
}

.btn-sm {
  min-height: 36px;
  padding: 0.45rem 0.75rem;
  font-size: 0.92rem;
}

.form-grid {
  display: grid;
  gap: 1rem;
}

.form-row {
  display: grid;
  gap: 1rem;
}

@media (min-width: 720px) {
  .form-row.two {
    grid-template-columns: 1fr 1fr;
  }
}

.field {
  display: grid;
  gap: 0.4rem;
}

.field label {
  font-weight: 600;
  color: var(--text-secondary);
}

.field .hint {
  color: var(--text-muted);
  font-size: 0.88rem;
}

.input,
.select,
.textarea {
  width: 100%;
  border: 1px solid var(--border-strong);
  background: var(--surface-elevated);
  color: var(--text);
  border-radius: 12px;
  padding: 0.75rem 0.9rem;
  min-height: 44px;
}

.textarea {
  min-height: 120px;
  resize: vertical;
}

.input:focus,
.select:focus,
.textarea:focus {
  border-color: var(--primary);
}

.error-text {
  color: var(--danger);
  font-size: 0.9rem;
}

.checkbox {
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.honeypot {
  position: absolute !important;
  left: -10000px !important;
  top: auto !important;
  width: 1px !important;
  height: 1px !important;
  overflow: hidden !important;
}

.badge,
.status-badge,
.tag-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  border-radius: 999px;
  padding: 0.2rem 0.65rem;
  font-size: 0.82rem;
  border: 1px solid transparent;
  white-space: nowrap;
}

.status-not_started {
  background: var(--info-soft);
  color: var(--info);
}

.status-in_progress {
  background: var(--warning-soft);
  color: var(--warning);
}

.status-completed {
  background: var(--success-soft);
  color: var(--success);
}

.status-cancelled {
  background: color-mix(in srgb, var(--text-muted) 18%, transparent);
  color: var(--text-muted);
}

.tag-badge {
  background: var(--primary-soft);
  color: var(--primary);
}

.overdue-badge {
  background: var(--danger-soft);
  color: var(--danger);
}

.empty-state {
  text-align: center;
  padding: 2.5rem 1.25rem;
}

.empty-state h2,
.empty-state h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
}

.empty-state p {
  margin: 0 0 1.25rem;
  color: var(--text-muted);
}

.toast-stack {
  position: fixed;
  right: 1rem;
  bottom: calc(var(--bottom-nav-height) + 1rem);
  z-index: 80;
  display: grid;
  gap: 0.6rem;
  width: min(360px, calc(100% - 2rem));
}

.toast {
  background: var(--surface-elevated);
  border: 1px solid var(--border);
  border-left: 4px solid var(--primary);
  border-radius: 12px;
  padding: 0.9rem 1rem;
  box-shadow: var(--shadow);
  animation: toast-in 220ms ease;
}

.toast.success {
  border-left-color: var(--success);
}

.toast.error,
.toast.danger {
  border-left-color: var(--danger);
}

.toast.info {
  border-left-color: var(--info);
}

@keyframes toast-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(10, 16, 14, 0.55);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  z-index: 90;
}

.modal-backdrop.is-open {
  display: flex;
}

.modal {
  width: min(480px, 100%);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow);
}

.modal h2 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
}

.modal p {
  margin: 0 0 1.25rem;
  color: var(--text-muted);
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.filters-bar {
  display: grid;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.filters-row {
  display: grid;
  gap: 0.75rem;
}

@media (min-width: 900px) {
  .filters-row {
    grid-template-columns: 1.3fr repeat(5, minmax(0, 1fr)) auto;
    align-items: end;
  }
}

.view-toggle {
  display: inline-flex;
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  background: var(--surface);
}

.view-toggle a {
  padding: 0.65rem 0.9rem;
  color: var(--text-secondary);
  text-decoration: none;
}

.view-toggle a.is-active {
  background: var(--primary-soft);
  color: var(--primary);
}

.task-list {
  display: grid;
  gap: 0.75rem;
}

.task-item {
  display: grid;
  gap: 0.75rem;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}

@media (min-width: 900px) {
  .task-item {
    grid-template-columns: 1fr auto;
    align-items: start;
  }
}

.task-item.is-overdue {
  border-color: color-mix(in srgb, var(--danger) 35%, var(--border));
}

.task-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 0.55rem;
}

.task-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.kanban-board {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(260px, 1fr);
  gap: 1rem;
  overflow-x: auto;
  padding-bottom: 0.5rem;
}

.kanban-column {
  background: color-mix(in srgb, var(--surface) 80%, var(--bg));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  min-height: 420px;
  display: flex;
  flex-direction: column;
}

.kanban-column-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
  padding: 0.9rem 1rem;
  border-bottom: 1px solid var(--border);
}

.kanban-column-body {
  padding: 0.75rem;
  display: grid;
  gap: 0.65rem;
  min-height: 260px;
  flex: 1;
}

.kanban-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.85rem;
  cursor: grab;
  touch-action: pan-y;
}

.kanban-card.is-dragging {
  opacity: 0.55;
}

.kanban-card h3 {
  margin: 0 0 0.35rem;
  font-size: 1rem;
}

.kanban-card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
}

.project-card {
  padding: 1.1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}

.project-card.is-active {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--primary) 20%, transparent);
}

.guest-shell {
  min-height: 100vh;
  display: grid;
}

.guest-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem 0;
}

.hero {
  display: grid;
  gap: 1.5rem;
  padding: 2.5rem 0 3rem;
}

@media (min-width: 900px) {
  .hero {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
    min-height: calc(100vh - 90px);
  }
}

.hero-copy h1 {
  margin: 0.4rem 0 0.8rem;
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 6vw, 4.4rem);
  line-height: 0.95;
  letter-spacing: -0.03em;
}

.hero-copy .lead {
  color: var(--text-secondary);
  font-size: 1.08rem;
  max-width: 34rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.4rem;
}

.hero-panel {
  min-height: 320px;
  border-radius: 28px;
  border: 1px solid var(--border);
  background:
    linear-gradient(145deg, color-mix(in srgb, var(--primary) 18%, var(--surface)), var(--surface)),
    radial-gradient(circle at 80% 20%, var(--primary-soft), transparent 45%);
  padding: 1.5rem;
  display: grid;
  align-content: end;
  gap: 0.8rem;
  box-shadow: var(--shadow);
}

.hero-panel .preview-line {
  height: 12px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--text) 10%, transparent);
}

.hero-panel .preview-line.wide {
  width: 78%;
}

.hero-panel .preview-line.mid {
  width: 58%;
}

.features {
  display: grid;
  gap: 1rem;
  padding: 0 0 3rem;
}

@media (min-width: 800px) {
  .features {
    grid-template-columns: repeat(3, 1fr);
  }
}

.feature {
  padding: 1.2rem;
  border-top: 2px solid var(--primary);
}

.feature h2 {
  margin: 0 0 0.45rem;
  font-size: 1.15rem;
}

.feature p {
  margin: 0;
  color: var(--text-muted);
}

.auth-card {
  width: min(440px, 100%);
  margin: 2rem auto 3rem;
}

.auth-card h1 {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
}

.flash {
  margin-bottom: 1rem;
  padding: 0.85rem 1rem;
  border-radius: 12px;
  border: 1px solid var(--border);
}

.flash.success {
  background: var(--success-soft);
  color: var(--success);
}

.flash.info {
  background: var(--info-soft);
  color: var(--info);
}

.flash.error {
  background: var(--danger-soft);
  color: var(--danger);
}

.mobile-nav {
  display: none;
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  height: var(--bottom-nav-height);
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  border-top: 1px solid var(--border);
  backdrop-filter: blur(12px);
  z-index: 70;
  padding: 0.35rem 0.4rem calc(0.35rem + env(safe-area-inset-bottom));
}

.mobile-nav a {
  flex: 1;
  display: grid;
  place-items: center;
  gap: 0.15rem;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.72rem;
  min-width: 0;
}

.mobile-nav a.is-active {
  color: var(--primary);
}

.mobile-nav svg {
  width: 1.25rem;
  height: 1.25rem;
}

.attachments-list {
  display: grid;
  gap: 0.65rem;
}

.attachment-item {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 12px;
}

.preview-frame {
  width: 100%;
  min-height: 320px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface-elevated);
}

.theme-switch {
  display: inline-flex;
  border: 1px solid var(--border);
  border-radius: 999px;
  overflow: hidden;
}

.theme-switch button {
  border: 0;
  background: transparent;
  color: var(--text-secondary);
  padding: 0.65rem 1rem;
  cursor: pointer;
  min-height: 44px;
}

.theme-switch button.is-active {
  background: var(--primary-soft);
  color: var(--primary);
}

.stack-gap {
  display: grid;
  gap: 1rem;
}

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

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.pagination {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 1rem;
}

.pagination a,
.pagination span {
  padding: 0.45rem 0.7rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  text-decoration: none;
}

.pagination .active span {
  background: var(--primary-soft);
  color: var(--primary);
}

@media (max-width: 900px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    display: none;
  }

  .mobile-nav {
    display: flex;
  }

  .main {
    padding: 1rem 1rem 6.5rem;
  }

  .toast-stack {
    bottom: calc(var(--bottom-nav-height) + 0.75rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}