:root {
  color-scheme: light;
  --ink: #0c1a2b;
  --muted: #5d6b7c;
  --surface: #ffffff;
  --surface-2: #f3f5f8;
  --surface-border: rgba(12, 26, 43, 0.08);
  --surface-border-strong: rgba(12, 26, 43, 0.15);
  --accent: #1f7aff;
  --accent-strong: #1b63cf;
  --accent-2: #ff7a59;
  --purple: #9b6dff;
  --success: #2fbf71;
  --danger: #e35b5b;
  --warn: #f2b233;
  --ring: rgba(31, 122, 255, 0.35);
  --shadow-1: 0 10px 30px rgba(15, 23, 42, 0.12);
  --shadow-2: 0 18px 50px rgba(15, 23, 42, 0.2);
  --shadow-glow: 0 12px 40px rgba(31, 122, 255, 0.25);
  --radius: 18px;
  --radius-sm: 12px;
  --font-body: "Plus Jakarta Sans", "Segoe UI", sans-serif;
  --font-display: "Fraunces", "Times New Roman", serif;
  --tint: rgba(31, 122, 255, 0.08);
  --tint-strong: rgba(31, 122, 255, 0.1);
  --page-bg:
    radial-gradient(circle at 10% 20%, rgba(31, 122, 255, 0.08), transparent 45%),
    radial-gradient(circle at 90% 0%, rgba(255, 122, 89, 0.12), transparent 35%),
    linear-gradient(160deg, #f7f8fb 0%, #eef2f7 50%, #f9f6f2 100%);
  --nav-bg: rgba(255, 255, 255, 0.85);
  --footer-bg: rgba(255, 255, 255, 0.7);
  --overlay-card: #ffffff;
}

[data-theme="dark"] {
  color-scheme: dark;
  --ink: #e7eefb;
  --muted: #9aa7bd;
  --surface: #151d2c;
  --surface-2: #1c2637;
  --surface-border: rgba(255, 255, 255, 0.08);
  --surface-border-strong: rgba(255, 255, 255, 0.16);
  --accent: #4d95ff;
  --accent-strong: #2f7bef;
  --accent-2: #ff8f70;
  --purple: #b18cff;
  --success: #3ad07f;
  --danger: #ff6b6b;
  --warn: #ffca4a;
  --ring: rgba(77, 149, 255, 0.4);
  --shadow-1: 0 10px 30px rgba(0, 0, 0, 0.45);
  --shadow-2: 0 22px 55px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 12px 45px rgba(77, 149, 255, 0.35);
  --tint: rgba(77, 149, 255, 0.14);
  --tint-strong: rgba(77, 149, 255, 0.18);
  --page-bg:
    radial-gradient(circle at 12% 18%, rgba(77, 149, 255, 0.16), transparent 45%),
    radial-gradient(circle at 88% 4%, rgba(255, 122, 89, 0.14), transparent 40%),
    linear-gradient(160deg, #0a0f1a 0%, #0d1524 55%, #10192b 100%);
  --nav-bg: rgba(13, 20, 34, 0.72);
  --footer-bg: rgba(13, 20, 34, 0.6);
  --overlay-card: #1a2334;
}

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

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

body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--page-bg);
  background-attachment: fixed;
  min-height: 100vh;
  transition: background 0.4s ease, color 0.3s ease;
}

main {
  padding: 32px 0 64px;
}

.calendar-fullscreen main {
  min-height: calc(100vh - 140px);
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding: 20px 0 32px;
}

a {
  color: inherit;
  text-decoration: none;
}

a:hover {
  color: var(--accent);
}

.container,
.container-fluid {
  max-width: 1200px;
}

.calendar-fullscreen .container,
.calendar-fullscreen .container-fluid {
  max-width: 100%;
}

.calendar-fullscreen .calendar-fluid {
  padding-left: 24px;
  padding-right: 24px;
}

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

.text-gradient {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

/* ---------- Navigation ---------- */
.app-nav {
  background: var(--nav-bg);
  border-bottom: 1px solid var(--surface-border);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.app-nav-inner {
  padding: 16px 0;
}

.brand {
  font-family: var(--font-display);
  font-size: 1.4rem;
  letter-spacing: 0.5px;
  display: inline-flex;
  gap: 10px;
  align-items: center;
}

.brand-badge {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  box-shadow: var(--shadow-glow);
}

.app-nav-links .nav-link {
  color: var(--muted);
  font-weight: 600;
  border-radius: 999px;
  padding: 8px 16px;
  transition: all 0.2s ease;
}

.app-nav-links .nav-link:hover,
.app-nav-links .nav-link.active {
  color: var(--ink);
  background: var(--tint-strong);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.theme-toggle {
  width: 42px;
  height: 42px;
  border-radius: 999px;
  border: 1px solid var(--surface-border-strong);
  background: var(--surface);
  color: var(--ink);
  font-size: 1.1rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}

.theme-toggle:hover {
  transform: translateY(-2px) rotate(-8deg);
  box-shadow: var(--shadow-1);
}

.theme-toggle .icon-sun {
  display: none;
}

.theme-toggle .icon-moon {
  display: inline;
}

[data-theme="dark"] .theme-toggle .icon-sun {
  display: inline;
}

[data-theme="dark"] .theme-toggle .icon-moon {
  display: none;
}

/* ---------- Buttons ---------- */
.btn-brand {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #fff;
  border: none;
  border-radius: 999px;
  padding: 10px 20px;
  font-weight: 600;
  box-shadow: var(--shadow-1);
  transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-brand:hover {
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
  filter: brightness(1.05);
}

.btn-ghost {
  border: 1px solid var(--surface-border-strong);
  border-radius: 999px;
  padding: 10px 18px;
  color: var(--ink);
  background: var(--surface);
  font-weight: 600;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-1);
}

.btn-danger-soft {
  background: rgba(227, 91, 91, 0.14);
  color: var(--danger);
  border: none;
  border-radius: 999px;
  padding: 8px 16px;
  font-weight: 600;
  transition: all 0.2s ease;
}

.btn-danger-soft:hover {
  background: var(--danger);
  color: #fff;
  transform: translateY(-2px);
}

/* ---------- Page header ---------- */
.page-header {
  text-align: center;
  margin-bottom: 32px;
  animation: fade-slide 0.7s ease both;
}

.page-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 8px;
  line-height: 1.1;
}

.page-subtitle {
  color: var(--muted);
  font-size: 1.05rem;
}

/* ---------- Cards ---------- */
.card-surface {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-1);
  padding: 24px;
  animation: rise 0.7s ease both;
}

.calendar-fullscreen .calendar-shell {
  flex: 1 1 auto;
  min-height: 60vh;
}

.calendar-fullscreen .calendar-card {
  height: 100%;
  display: flex;
  flex-direction: column;
}

.calendar-fullscreen .calendar-card #calendar {
  flex: 1 1 auto;
  min-height: 60vh;
}

/* ---------- Stat cards ---------- */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 18px;
}

.stat-card {
  position: relative;
  background: var(--surface);
  border-radius: 20px;
  padding: 22px;
  border: 1px solid var(--surface-border);
  box-shadow: var(--shadow-1);
  display: grid;
  gap: 8px;
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  animation: rise 0.6s ease both;
}

.stat-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 100% 0%, var(--tint), transparent 60%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-2);
}

.stat-card:hover::after {
  opacity: 1;
}

.stat-card .stat-value {
  font-size: 1.9rem;
  font-weight: 700;
  font-family: var(--font-display);
}

.stat-card .stat-label {
  color: var(--muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  font-size: 0.72rem;
}

.stat-card .stat-icon {
  position: absolute;
  top: 18px;
  right: 18px;
  font-size: 1.3rem;
  opacity: 0.5;
}

.stat-card.accent {
  border-left: 6px solid var(--accent);
}

.stat-card.danger {
  border-left: 6px solid var(--danger);
}

.stat-card.warn {
  border-left: 6px solid var(--warn);
}

.stat-card.success {
  border-left: 6px solid var(--success);
}

.stat-card.purple {
  border-left: 6px solid var(--purple);
}

/* ---------- Tables ---------- */
.table-modern {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-1);
}

.table-modern table {
  color: var(--ink);
  margin-bottom: 0;
}

.table-modern thead {
  background: var(--tint-strong);
}

.table-modern th {
  font-weight: 700;
  color: var(--ink);
  border-bottom: 1px solid var(--surface-border);
  padding: 14px 16px;
}

.table-modern td {
  color: var(--ink);
  border-color: var(--surface-border);
  padding: 14px 16px;
  vertical-align: middle;
}

.table-modern tbody tr {
  transition: background 0.15s ease;
}

.table-modern tbody tr:hover {
  background: var(--tint);
}

.table-modern tbody tr:last-child td {
  border-bottom: none;
}

/* ---------- Status badges ---------- */
.badge-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  white-space: nowrap;
}

.badge-status::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
}

.badge-status.success {
  color: var(--success);
  background: rgba(47, 191, 113, 0.14);
}

.badge-status.danger {
  color: var(--danger);
  background: rgba(227, 91, 91, 0.14);
}

.badge-status.warn {
  color: var(--warn);
  background: rgba(242, 178, 51, 0.16);
}

.badge-status.purple {
  color: var(--purple);
  background: rgba(155, 109, 255, 0.16);
}

/* ---------- Progress bars ---------- */
.progress-row {
  display: grid;
  grid-template-columns: minmax(120px, 1fr) 2fr auto;
  align-items: center;
  gap: 16px;
  padding: 12px 4px;
  border-bottom: 1px solid var(--surface-border);
}

.progress-row:last-child {
  border-bottom: none;
}

.progress-row .progress-name {
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.progress-track {
  height: 12px;
  border-radius: 999px;
  background: var(--surface-2);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  width: 0;
  transition: width 1s cubic-bezier(0.22, 1, 0.36, 1);
}

.progress-row .progress-value {
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--muted);
  min-width: 56px;
  text-align: right;
}

/* ---------- Legend ---------- */
.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--muted);
}

.legend-dot {
  width: 12px;
  height: 12px;
  border-radius: 4px;
}

/* ---------- Empty state ---------- */
.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--muted);
}

.empty-state .empty-emoji {
  font-size: 3rem;
  display: block;
  margin-bottom: 12px;
  opacity: 0.85;
}

.empty-state .empty-title {
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: var(--ink);
  margin-bottom: 6px;
}

/* ---------- Forms ---------- */
.form-card {
  max-width: 560px;
  margin: 0 auto;
}

.form-label {
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 6px;
}

.form-control,
textarea,
input[type="text"],
input[type="datetime-local"],
input[type="email"] {
  border-radius: var(--radius-sm);
  border: 1px solid var(--surface-border-strong);
  padding: 10px 14px;
  background: var(--surface);
  color: var(--ink);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-control::placeholder,
textarea::placeholder {
  color: var(--muted);
}

.form-control:focus,
textarea:focus,
input[type="text"]:focus,
input[type="datetime-local"]:focus,
input[type="email"]:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--ring);
  background: var(--surface);
  color: var(--ink);
  outline: none;
}

[data-theme="dark"] input[type="datetime-local"] {
  color-scheme: dark;
}

/* ---------- Alerts ---------- */
.alert-info {
  background: var(--tint-strong);
  border: 1px solid var(--surface-border);
  color: var(--ink);
  border-radius: var(--radius-sm);
}

/* ---------- FullCalendar (Google Calendar look) ---------- */
.fc {
  --fc-border-color: var(--surface-border);
  --fc-page-bg-color: transparent;
  --fc-neutral-bg-color: var(--surface-2);
  --fc-today-bg-color: var(--tint);
  --fc-list-event-hover-bg-color: var(--tint);
  --fc-now-indicator-color: #ea4335;
  color: var(--ink);
  font-size: 0.85rem;
}

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

.fc .fc-col-header-cell-cushion {
  color: var(--muted);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.7rem;
  letter-spacing: 0.4px;
  padding: 8px 4px;
}

.fc .fc-daygrid-day-number {
  color: var(--ink);
  font-weight: 500;
  font-size: 0.8rem;
  padding: 6px;
}

.fc .fc-day-today .fc-daygrid-day-number {
  color: var(--accent);
  font-weight: 700;
}

.fc .fc-toolbar-title {
  font-family: var(--font-display);
  color: var(--ink);
  font-weight: 600;
  font-size: 1.3rem;
}

.fc .fc-toolbar.fc-header-toolbar {
  gap: 10px;
}

.fc .fc-button {
  border: 1px solid var(--surface-border-strong);
  border-radius: 999px;
  background: var(--surface);
  color: var(--ink);
  padding: 6px 16px;
  box-shadow: none;
  text-transform: capitalize;
  font-weight: 600;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.fc .fc-button:hover {
  background: var(--tint-strong);
  color: var(--accent);
  border-color: var(--accent);
}

.fc .fc-button:focus,
.fc .fc-button:focus-visible {
  box-shadow: 0 0 0 4px var(--ring);
}

.fc .fc-today-button {
  text-transform: none;
}

.fc .fc-prev-button,
.fc .fc-next-button {
  padding: 6px 10px;
}

.fc .fc-button-primary:not(:disabled).fc-button-active,
.fc .fc-button-primary:not(:disabled):active {
  background: var(--tint-strong);
  color: var(--accent-strong);
  border-color: var(--accent);
}

.fc .fc-daygrid-day.fc-day-today,
.fc .fc-timegrid-col.fc-day-today {
  background: var(--tint);
}

.fc-event {
  border: none;
  border-radius: 4px;
  padding: 1px 6px;
  font-size: 0.78rem;
  font-weight: 500;
  box-shadow: none;
  transition: filter 0.12s ease, box-shadow 0.12s ease;
}

.fc-daygrid-event {
  padding: 2px 6px;
}

.fc-event:hover {
  filter: brightness(0.95);
  box-shadow: 0 2px 8px rgba(12, 26, 43, 0.18);
}

.fc-timegrid-event .fc-event-main {
  padding: 2px 6px;
}

.fc-timegrid-now-indicator-line {
  border-color: var(--fc-now-indicator-color);
}

.fc-timegrid-now-indicator-arrow {
  border-color: var(--fc-now-indicator-color);
  color: var(--fc-now-indicator-color);
}

.fc-timegrid-slot-label-cushion {
  color: var(--muted);
  font-size: 0.72rem;
}

/* ---------- Event popovers (quick create / details+edit) ---------- */
.event-popover {
  position: fixed;
  z-index: 1080;
  width: min(320px, 92vw);
  background: var(--overlay-card);
  border: 1px solid var(--surface-border);
  border-radius: 14px;
  box-shadow: var(--shadow-2);
  padding: 18px;
  display: none;
}

.event-popover.show {
  display: block;
}

.popover-close {
  border: none;
  background: transparent;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1;
  padding: 4px;
  border-radius: 999px;
  cursor: pointer;
}

.popover-close:hover {
  background: var(--tint-strong);
  color: var(--ink);
}

.popover-status {
  font-size: 0.85rem;
  font-weight: 600;
}

/* ---------- Context menu / modal / toast ---------- */
.context-menu {
  position: fixed;
  z-index: 1050;
  min-width: 180px;
  background: var(--overlay-card);
  border: 1px solid var(--surface-border);
  border-radius: 14px;
  box-shadow: var(--shadow-2);
  padding: 8px;
  display: none;
}

.context-menu button {
  width: 100%;
  border: none;
  background: transparent;
  text-align: left;
  padding: 10px 12px;
  border-radius: 10px;
  font-weight: 600;
  color: var(--ink);
}

.context-menu button:hover {
  background: var(--tint-strong);
  color: var(--accent);
}

.modal-backdrop-custom {
  position: fixed;
  inset: 0;
  background: rgba(6, 12, 22, 0.55);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
  z-index: 1040;
}

.modal-backdrop-custom.show {
  opacity: 1;
  pointer-events: auto;
}

.modal-card {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.98);
  background: var(--overlay-card);
  border: 1px solid var(--surface-border);
  border-radius: 20px;
  padding: 24px;
  width: min(480px, 92vw);
  box-shadow: var(--shadow-2);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
  z-index: 1060;
}

.modal-card.show {
  opacity: 1;
  pointer-events: auto;
  transform: translate(-50%, -50%) scale(1);
}

.toast-message {
  position: fixed;
  right: 24px;
  bottom: 24px;
  background: var(--overlay-card);
  color: var(--ink);
  border: 1px solid var(--surface-border);
  border-radius: 14px;
  padding: 12px 16px;
  box-shadow: var(--shadow-2);
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.2s ease, transform 0.2s ease;
  z-index: 1070;
}

.toast-message.show {
  opacity: 1;
  transform: translateY(0);
}

.toast-message.error {
  border-left: 4px solid var(--danger);
}

/* ---------- Footer ---------- */
footer.footer {
  background: var(--footer-bg);
  border-top: 1px solid var(--surface-border);
  padding: 18px 0;
  color: var(--muted);
}

/* ---------- Reveal on scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Animations ---------- */
@keyframes fade-slide {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(16px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

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

@media (max-width: 768px) {
  .app-nav-inner {
    padding: 12px 0;
  }

  .page-header {
    text-align: left;
  }

  .nav-actions {
    margin-top: 12px;
  }

  main {
    padding: 24px 0 56px;
  }

  .progress-row {
    grid-template-columns: 1fr auto;
    grid-template-areas:
      "name value"
      "track track";
    row-gap: 8px;
  }

  .progress-row .progress-name {
    grid-area: name;
  }

  .progress-row .progress-value {
    grid-area: value;
  }

  .progress-track {
    grid-area: track;
  }
}