:root {
  color-scheme: light;
  --bg-0: #f5f7fa;
  --bg-1: #eef2f7;
  --bg-orb-0: #e8eeff;
  --bg-orb-1: #f7eee7;
  --surface: rgba(255, 255, 255, 0.78);
  --surface-strong: rgba(255, 255, 255, 0.94);
  --surface-border: rgba(15, 23, 42, 0.12);
  --text-main: #0f172a;
  --text-strong: #101828;
  --text-muted: #667085;
  --link-color: #0b57c4;
  --link-hover-color: #0746a0;
  --accent: #0f6cf1;
  --accent-strong: #0b57c4;
  --line-soft: rgba(15, 23, 42, 0.08);
  --danger-ink: #7a271a;
  --danger-bg: #fef1ee;
  --danger-border: #f9cdc6;
  --badge-light-bg: #edf1f7;
  --badge-light-ink: #344054;
  --badge-light-border: #d7dfec;
  --input-bg: rgba(255, 255, 255, 0.92);
  --input-focus-bg: #ffffff;
  --input-ink: #101828;
  --input-border: rgba(15, 23, 42, 0.2);
  --switch-bg: #d7deea;
  --switch-knob: #ffffff;
  --switch-border: rgba(15, 23, 42, 0.2);
  --menu-bg: rgba(255, 255, 255, 0.95);
  --menu-border: rgba(15, 23, 42, 0.14);
  --menu-shadow: 0 14px 32px rgba(15, 23, 42, 0.14);
  --menu-item-ink: #1d2939;
  --menu-item-hover-bg: rgba(15, 108, 241, 0.08);
  --menu-item-hover-ink: #101828;
  --spinner-track: rgba(15, 23, 42, 0.2);
  --divider-line: rgba(15, 23, 42, 0.15);
  --blockquote-ink: rgba(15, 23, 42, 0.84);
  --session-bg: rgba(255, 255, 255, 0.7);
  --header-border: rgba(15, 23, 42, 0.08);
  --card-shadow: 0 12px 34px rgba(15, 23, 42, 0.08);
  --btn-secondary-ink: #1d2939;
  --btn-secondary-bg: rgba(255, 255, 255, 0.95);
  --btn-secondary-border: rgba(15, 23, 42, 0.16);
  --btn-secondary-hover-ink: #0f172a;
  --btn-secondary-hover-bg: #ffffff;
  --btn-secondary-hover-border: rgba(15, 23, 42, 0.25);
  --btn-light-ink: #1d2939;
  --btn-light-bg: rgba(255, 255, 255, 0.85);
  --btn-light-border: rgba(15, 23, 42, 0.12);
  --btn-light-hover-ink: #101828;
  --btn-light-hover-bg: rgba(255, 255, 255, 0.98);
  --danger: #b42318;
  --ring: 0 0 0 3px rgba(15, 108, 241, 0.14);
  --tooltip-bg: #0f172a;
  --tooltip-ink: #f8fafc;
  --tooltip-border: rgba(148, 163, 184, 0.22);
  --tooltip-shadow: 0 10px 24px rgba(15, 23, 42, 0.28);
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg-0: #0b1220;
  --bg-1: #0f1a2b;
  --bg-orb-0: #1d2b47;
  --bg-orb-1: #2d2336;
  --surface: rgba(20, 30, 46, 0.86);
  --surface-strong: rgba(20, 30, 46, 0.95);
  --surface-border: rgba(148, 163, 184, 0.28);
  --text-main: #e5edf9;
  --text-strong: #f6f9ff;
  --text-muted: #a4b1c8;
  --link-color: #87b6ff;
  --link-hover-color: #b2d1ff;
  --line-soft: rgba(148, 163, 184, 0.24);
  --danger-ink: #ffd8d5;
  --danger-bg: rgba(124, 45, 50, 0.55);
  --danger-border: rgba(248, 113, 113, 0.42);
  --badge-light-bg: #273245;
  --badge-light-ink: #d9e2f2;
  --badge-light-border: #37465f;
  --input-bg: rgba(18, 27, 42, 0.9);
  --input-focus-bg: rgba(21, 33, 52, 0.96);
  --input-ink: #e9f0fb;
  --input-border: rgba(148, 163, 184, 0.35);
  --switch-bg: #4a5b78;
  --switch-knob: #f7fbff;
  --switch-border: rgba(148, 163, 184, 0.36);
  --menu-bg: rgba(20, 31, 48, 0.97);
  --menu-border: rgba(148, 163, 184, 0.32);
  --menu-shadow: 0 20px 42px rgba(0, 0, 0, 0.45);
  --menu-item-ink: #dbe6f6;
  --menu-item-hover-bg: rgba(135, 182, 255, 0.18);
  --menu-item-hover-ink: #f5f9ff;
  --spinner-track: rgba(148, 163, 184, 0.42);
  --divider-line: rgba(148, 163, 184, 0.25);
  --blockquote-ink: rgba(231, 238, 249, 0.9);
  --session-bg: rgba(20, 31, 48, 0.85);
  --header-border: rgba(148, 163, 184, 0.2);
  --card-shadow: 0 18px 38px rgba(0, 0, 0, 0.38);
  --btn-secondary-ink: #dbe7f8;
  --btn-secondary-bg: rgba(26, 39, 60, 0.94);
  --btn-secondary-border: rgba(148, 163, 184, 0.34);
  --btn-secondary-hover-ink: #f6f9ff;
  --btn-secondary-hover-bg: rgba(39, 55, 79, 0.98);
  --btn-secondary-hover-border: rgba(180, 196, 219, 0.45);
  --btn-light-ink: #dbe7f8;
  --btn-light-bg: rgba(23, 35, 54, 0.9);
  --btn-light-border: rgba(148, 163, 184, 0.3);
  --btn-light-hover-ink: #f8fbff;
  --btn-light-hover-bg: rgba(38, 53, 76, 0.95);
  --tooltip-bg: #111a2d;
  --tooltip-ink: #f8fbff;
  --tooltip-border: rgba(148, 163, 184, 0.32);
  --tooltip-shadow: 0 12px 26px rgba(0, 0, 0, 0.46);
}

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

body.app-body {
  margin: 0;
  min-height: 100vh;
  color: var(--text-main);
  font-family: "Manrope", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(1200px circle at 0% -15%, var(--bg-orb-0) 0%, transparent 45%),
    radial-gradient(900px circle at 100% -20%, var(--bg-orb-1) 0%, transparent 42%),
    linear-gradient(180deg, var(--bg-0) 0%, var(--bg-1) 100%);
}

.app-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.app-main {
  flex: 1;
}

.container {
  width: min(1180px, calc(100% - 2rem));
}

a {
  color: var(--link-color);
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

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

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

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

.app-header {
  margin-top: 0.8rem;
  padding-inline: 0.5rem;
  border-bottom: 1px solid var(--header-border) !important;
}

.app-brand {
  font-family: "Fraunces", "Times New Roman", serif;
  font-weight: 600;
  color: var(--text-strong) !important;
  letter-spacing: 0.02em;
}

.app-session {
  background: var(--session-bg);
  border: 1px solid var(--surface-border);
  border-radius: 999px;
  padding: 0.35rem 0.4rem 0.35rem 0.8rem;
  backdrop-filter: blur(6px);
}

.app-welcome {
  margin-bottom: 0;
  font-size: 0.88rem;
}

.app-footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.blockquote p {
  margin-bottom: 0.35rem;
  font-size: 1.05rem;
  font-family: "Fraunces", "Times New Roman", serif;
  color: var(--blockquote-ink);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  border: 1px solid transparent;
  border-radius: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  padding: 0.44rem 0.82rem;
  text-decoration: none;
  transition: all 180ms ease;
}

.btn:focus-visible,
.btn:focus {
  outline: none;
  box-shadow: var(--ring);
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-sm {
  padding: 0.36rem 0.66rem;
  font-size: 0.84rem;
}

.btn-primary {
  color: #ffffff;
  background: linear-gradient(135deg, #0f6cf1, #0e63dd);
  border-color: rgba(11, 87, 196, 0.5);
}

.btn-primary:hover {
  color: #ffffff;
  background: linear-gradient(135deg, #0e63dd, #0b57c4);
}

.btn-secondary {
  color: var(--btn-secondary-ink);
  background: var(--btn-secondary-bg);
  border-color: var(--btn-secondary-border);
}

.btn-secondary:hover {
  color: var(--btn-secondary-hover-ink);
  background: var(--btn-secondary-hover-bg);
  border-color: var(--btn-secondary-hover-border);
}

.btn-light {
  color: var(--btn-light-ink);
  background: var(--btn-light-bg);
  border-color: var(--btn-light-border);
}

.btn-light:hover {
  color: var(--btn-light-hover-ink);
  background: var(--btn-light-hover-bg);
}

.btn-group {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.34rem;
  border-radius: 999px;
  border: 1px solid var(--surface-border);
  background: var(--surface-strong);
  box-shadow: var(--card-shadow);
}

.btn-group .btn {
  border-radius: 999px;
}

.tooltip,
.airlog-tooltip {
  position: absolute;
  z-index: 2000;
  display: block;
  margin: 0;
  opacity: 0;
  pointer-events: none;
}

.tooltip.show,
.airlog-tooltip.show {
  opacity: 1;
}

.tooltip .tooltip-inner,
.airlog-tooltip .tooltip-inner {
  max-width: 260px;
  padding: 0.42rem 0.68rem;
  color: var(--tooltip-ink);
  text-align: center;
  background: var(--tooltip-bg);
  background-color: var(--tooltip-bg);
  background-clip: padding-box;
  opacity: 1;
  border: 1px solid var(--tooltip-border);
  border-radius: 0.75rem;
  box-shadow: var(--tooltip-shadow);
  font-size: 0.78rem;
  line-height: 1.35;
}

.tooltip .tooltip-arrow,
.airlog-tooltip .tooltip-arrow {
  position: absolute;
  display: block;
  width: 0.8rem;
  height: 0.4rem;
}

.tooltip .tooltip-arrow::before,
.airlog-tooltip .tooltip-arrow::before {
  position: absolute;
  content: "";
  border-color: transparent;
  border-style: solid;
}

.bs-tooltip-top .tooltip-arrow,
.bs-tooltip-auto[data-popper-placement^="top"] .tooltip-arrow {
  bottom: calc(-1 * 0.4rem);
}

.bs-tooltip-top .tooltip-arrow::before,
.bs-tooltip-auto[data-popper-placement^="top"] .tooltip-arrow::before {
  top: -1px;
  border-width: 0.4rem 0.4rem 0;
  border-top-color: var(--tooltip-bg);
}

.bs-tooltip-end .tooltip-arrow,
.bs-tooltip-auto[data-popper-placement^="right"] .tooltip-arrow {
  left: calc(-1 * 0.4rem);
  width: 0.4rem;
  height: 0.8rem;
}

.bs-tooltip-end .tooltip-arrow::before,
.bs-tooltip-auto[data-popper-placement^="right"] .tooltip-arrow::before {
  right: -1px;
  border-width: 0.4rem 0.4rem 0.4rem 0;
  border-right-color: var(--tooltip-bg);
}

.bs-tooltip-bottom .tooltip-arrow,
.bs-tooltip-auto[data-popper-placement^="bottom"] .tooltip-arrow {
  top: calc(-1 * 0.4rem);
}

.bs-tooltip-bottom .tooltip-arrow::before,
.bs-tooltip-auto[data-popper-placement^="bottom"] .tooltip-arrow::before {
  bottom: -1px;
  border-width: 0 0.4rem 0.4rem;
  border-bottom-color: var(--tooltip-bg);
}

.bs-tooltip-start .tooltip-arrow,
.bs-tooltip-auto[data-popper-placement^="left"] .tooltip-arrow {
  right: calc(-1 * 0.4rem);
  width: 0.4rem;
  height: 0.8rem;
}

.bs-tooltip-start .tooltip-arrow::before,
.bs-tooltip-auto[data-popper-placement^="left"] .tooltip-arrow::before {
  left: -1px;
  border-width: 0.4rem 0 0.4rem 0.4rem;
  border-left-color: var(--tooltip-bg);
}

.card {
  border: 1px solid var(--surface-border);
  border-radius: 1rem;
  background: var(--surface);
  backdrop-filter: blur(8px);
  box-shadow: var(--card-shadow);
  overflow: hidden;
}

.card-header {
  border-bottom: 1px solid var(--line-soft);
  background: transparent;
  padding: 0.82rem 1rem;
  font-weight: 600;
}

.card-body {
  padding: 0.95rem 1rem;
}

.card-footer {
  border-top: 1px solid var(--line-soft);
  background: transparent;
  padding: 0.55rem 0.75rem;
}

.list-group {
  margin: 0;
  padding-left: 0;
  list-style: none;
}

.list-group-flush > .list-group-item {
  border: 0;
}

.list-group-item {
  display: block;
  list-style: none;
  background: transparent;
  padding: 0.8rem;
}

.list-group-item::marker {
  content: "";
}

.alert {
  border-radius: 0.9rem;
  border: 1px solid transparent;
  padding: 0.7rem 0.85rem;
}

.alert-danger {
  color: var(--danger-ink);
  background: var(--danger-bg);
  border-color: var(--danger-border);
}

.badge {
  font-weight: 600;
  border: 1px solid transparent;
  padding: 0.3rem 0.55rem;
}

.rounded-pill {
  border-radius: 999px !important;
}

.text-bg-light {
  background: var(--badge-light-bg) !important;
  color: var(--badge-light-ink) !important;
  border-color: var(--badge-light-border) !important;
}

.text-bg-secondary {
  background: linear-gradient(135deg, #f0f2f5, #e6e9ef) !important;
  color: #4b5565 !important;
  border-color: #d4dae3 !important;
}

.text-bg-success {
  background: linear-gradient(135deg, #e7f8ef, #d8f2e4) !important;
  color: #0f5132 !important;
  border-color: #bbe6d0 !important;
}

.text-bg-warning {
  background: linear-gradient(135deg, #fff6e8, #fdebcf) !important;
  color: #8b5e10 !important;
  border-color: #f9dca8 !important;
}

.text-bg-danger {
  background: linear-gradient(135deg, #fcebe8, #f8d7d2) !important;
  color: #7a271a !important;
  border-color: #efb7ae !important;
}

.text-bg-success .card-header,
.text-bg-warning .card-header,
.text-bg-danger .card-header,
.text-bg-secondary .card-header,
.text-bg-success .card-footer,
.text-bg-warning .card-footer,
.text-bg-danger .card-footer,
.text-bg-secondary .card-footer {
  border-color: var(--line-soft);
}

.text-bg-success .card_value,
.text-bg-warning .card_value,
.text-bg-danger .card_value,
.text-bg-secondary .card_value {
  color: inherit;
}

.form-label {
  display: block;
  margin-bottom: 0.4rem;
  font-size: 0.9rem;
  font-weight: 600;
}

.form-control {
  width: 100%;
  border: 1px solid var(--input-border);
  border-radius: 0.75rem;
  background: var(--input-bg);
  color: var(--input-ink);
  padding: 0.55rem 0.75rem;
  transition: border-color 180ms ease, box-shadow 180ms ease, background-color 180ms ease;
}

.form-control:focus {
  outline: none;
  border-color: rgba(15, 108, 241, 0.55);
  box-shadow: var(--ring);
  background: var(--input-focus-bg);
}

.form-control.is-invalid {
  border-color: rgba(180, 35, 24, 0.6);
}

.datepicker-dropdown {
  z-index: 3000;
}

:root[data-theme="dark"] .datepicker-picker {
  background: var(--menu-bg);
  border: 1px solid var(--menu-border);
  box-shadow: var(--menu-shadow);
  color: var(--menu-item-ink);
}

:root[data-theme="dark"] .datepicker-header,
:root[data-theme="dark"] .datepicker-main,
:root[data-theme="dark"] .datepicker-footer,
:root[data-theme="dark"] .datepicker-view {
  background: transparent;
}

:root[data-theme="dark"] .datepicker-controls .button,
:root[data-theme="dark"] .datepicker-controls .btn {
  color: var(--menu-item-ink);
  background: transparent;
  border: 1px solid transparent;
}

:root[data-theme="dark"] .datepicker-controls .button:hover,
:root[data-theme="dark"] .datepicker-controls .btn:hover {
  color: var(--menu-item-hover-ink);
  background: var(--menu-item-hover-bg);
}

:root[data-theme="dark"] .datepicker-controls .button:focus,
:root[data-theme="dark"] .datepicker-controls .btn:focus {
  outline: none;
  box-shadow: var(--ring);
}

:root[data-theme="dark"] .datepicker-cell,
:root[data-theme="dark"] .dow {
  color: var(--menu-item-ink);
}

:root[data-theme="dark"] .datepicker-cell:hover,
:root[data-theme="dark"] .datepicker-cell.focused {
  color: var(--menu-item-hover-ink);
  background: var(--menu-item-hover-bg);
}

:root[data-theme="dark"] .datepicker-cell.today:not(.selected) {
  color: #dff0ff;
  background: rgba(135, 182, 255, 0.18);
}

:root[data-theme="dark"] .datepicker-cell.selected,
:root[data-theme="dark"] .datepicker-cell.selected:hover {
  color: #ffffff;
  background: linear-gradient(135deg, #0f6cf1, #0e63dd);
}

:root[data-theme="dark"] .datepicker-cell.disabled {
  color: rgba(164, 177, 200, 0.42);
  background: transparent;
}

.invalid-feedback {
  display: block;
  margin-top: 0.35rem;
  font-size: 0.82rem;
  color: var(--danger);
}

.form-check {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  min-height: 2.2rem;
}

.form-switch .form-check-input {
  width: 2.4rem;
  height: 1.3rem;
  margin-top: 0;
  border-radius: 999px;
  appearance: none;
  border: 1px solid var(--switch-border);
  background: var(--switch-bg);
  position: relative;
  cursor: pointer;
}

.form-switch .form-check-input::before {
  content: "";
  width: 1rem;
  height: 1rem;
  border-radius: 999px;
  background: var(--switch-knob);
  position: absolute;
  top: 0.12rem;
  left: 0.15rem;
  transition: transform 180ms ease;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.2);
}

.form-switch .form-check-input:checked {
  background: #0f6cf1;
  border-color: #0f6cf1;
}

.form-switch .form-check-input:checked::before {
  transform: translateX(1.05rem);
}

.form-switch .form-check-input:focus {
  outline: none;
  box-shadow: var(--ring);
}

.settings-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
}

.settings-row + .settings-row {
  margin-top: 0.65rem;
  padding-top: 0.7rem;
  border-top: 1px solid var(--line-soft);
}

.settings-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-main);
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  border: 1px solid var(--surface-border);
  background: var(--surface-strong);
  border-radius: 999px;
  padding: 0.2rem;
}

.theme-toggle-option {
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-main);
  border-radius: 999px;
  padding: 0.28rem 0.62rem;
  font-size: 0.79rem;
  font-weight: 600;
  line-height: 1.2;
  cursor: pointer;
  transition: all 180ms ease;
}

.theme-toggle-option:hover {
  background: var(--menu-item-hover-bg);
}

.theme-toggle-option:focus-visible {
  outline: none;
  box-shadow: var(--ring);
}

.theme-toggle-option.is-active {
  color: #ffffff;
  background: linear-gradient(135deg, #0f6cf1, #0e63dd);
  border-color: rgba(11, 87, 196, 0.5);
}

.dropdown {
  position: relative;
}

.dropdown-toggle::after {
  display: inline-block;
  margin-left: 0.45rem;
  vertical-align: 0.18rem;
  content: "";
  border-top: 0.3rem solid;
  border-right: 0.3rem solid transparent;
  border-bottom: 0;
  border-left: 0.3rem solid transparent;
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + 0.45rem);
  left: 0;
  z-index: 1000;
  display: none;
  min-width: 100%;
  max-height: 260px;
  overflow-y: auto;
  padding: 0.35rem;
  margin: 0;
  border: 1px solid var(--menu-border);
  border-radius: 0.85rem;
  background: var(--menu-bg);
  box-shadow: var(--menu-shadow);
  backdrop-filter: blur(8px);
  list-style: none;
}

.dropdown-menu.show {
  display: block;
}

.dropdown-item {
  display: block;
  width: 100%;
  color: var(--menu-item-ink);
  text-decoration: none;
  border-radius: 0.6rem;
  padding: 0.5rem 0.65rem;
}

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

.collapse:not(.show) {
  display: none;
}

.collapsing {
  height: 0;
  overflow: hidden;
  transition: height 0.24s ease;
}

.spinner-border {
  display: inline-block;
  width: 1.9rem;
  height: 1.9rem;
  border: 0.2rem solid var(--spinner-track);
  border-right-color: transparent;
  border-radius: 50%;
  animation: spinner-rotate 0.75s linear infinite;
}

@keyframes spinner-rotate {
  to {
    transform: rotate(360deg);
  }
}

#spinner_main {
  color: var(--text-muted);
}

.login-container {
  min-height: 60vh;
}

.login-box {
  min-width: 300px;
  max-width: 460px;
  width: 100%;
  padding: 1.7rem;
  border-radius: 1.2rem;
  border: 1px solid var(--surface-border);
  background: var(--surface-strong);
  box-shadow: var(--card-shadow);
  backdrop-filter: blur(10px);
}

.b-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--divider-line), transparent);
  border: 0;
  margin: 2rem 0;
}

.plot-container {
  min-width: 200px;
}

@keyframes fade-rise {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.app-main .btn-group,
.app-main .alert,
.app-main .card,
.app-main .login-box {
  animation: fade-rise 0.45s ease both;
}

.app-main .row > [class*="col"]:nth-child(2) .card {
  animation-delay: 0.06s;
}

.app-main .row > [class*="col"]:nth-child(3) .card {
  animation-delay: 0.12s;
}

@media (prefers-reduced-motion: reduce) {
  .app-main .btn-group,
  .app-main .alert,
  .app-main .card,
  .app-main .login-box {
    animation: none;
  }

  .btn,
  .form-control,
  .form-switch .form-check-input::before {
    transition: none;
  }
}

@media (max-width: 991px) {
  .app-header {
    gap: 0.8rem;
    margin-bottom: 1.2rem !important;
  }

  .app-session {
    width: 100%;
    justify-content: space-between;
  }
}

@media (max-width: 576px) {
  .container {
    width: calc(100% - 1.2rem);
  }

  .btn-group {
    gap: 0.3rem;
    padding: 0.24rem;
  }

  .btn-sm {
    padding: 0.32rem 0.56rem;
  }

  .login-box {
    min-width: 0;
    padding: 1.35rem;
  }

  .settings-row {
    flex-wrap: wrap;
  }

  .theme-toggle {
    width: 100%;
    justify-content: space-between;
  }

  .theme-toggle-option {
    flex: 1;
    text-align: center;
  }
}