:root {
  /* Borders */
  --border-color-base: var(--sidebar-border-color);
  --border-radius-sm: 4px;
  --border-radius-base: 5px;
  --border-radius-md: 8px;
  --border-radius-lg: 10px;
  --border-radius-xl: 1rem;
  --border-width-thin: 1px;
  --border-width-base: 2px;
  --border-width-thick: 5px;
  --border-solid: solid;
  --border-style-base: solid;
  --border-style-input: 1px solid var(--sidebar-border-color);

  /* Breakpoints */
  --breakpoint-xs: 360px;
  --breakpoint-sm: 480px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 1024px;
  --breakpoint-xl: 1280px;

  /* Colors — Galaxy palette (cosmic purple · teal · rose · amber) */
  --accent-bg: #8b6cc5;
  --accent-hover-bg: #7558b0;
  --card-bg: #121224;
  --color-black: #000000;
  --color-confirm: #8b6cc5;
  --color-confirm-hover: #7558b0;
  --color-gray-100: #f0f0f8;
  --color-gray-200: #d8d8e4;
  --color-gray-300: #b8b8cc;
  --color-gray-400: #9898b0;
  --color-gray-500: #7e7e98;
  --color-gray-600: #636380;
  --color-gray-700: #4a4a64;
  --color-gray-800: #2e2e44;
  --color-gray-900: #1a1a30;
  --color-white: #ffffff;
  --danger-bg: #e05577;
  --danger-fg: #e05577;
  --danger-hover-bg: #c04466;
  --glow-primary: 0 0 0 2px var(--main-fg), 0 0 10px rgba(139, 108, 197, 0.35);
  --input-bg: #161630;
  --main-bg: #06060f;
  --main-fg: #8b6cc5;
  --secondary-bg: #0e0e1a;
  --selected-camera-bg: #0b0b18;
  --sidebar-active-bg: rgba(139, 108, 197, 0.15);
  --sidebar-bg: #0a0a16;
  --sidebar-border-color: #1e1e3e;
  --sidebar-fg: #ffffff;
  --sidebar-title-fg: #8b6cc5;
  --success-bg: #5ec8c8;
  --success-fg: #5ec8c8;
  --success-hover-bg: #4ab3b3;
  --switch-inactive-bg: #1e1e3e;
  --text-color: #e8e8f0;
  --text-muted: #8080a8;
  --text-on-primary: var(--sidebar-fg);
  --text-on-surface: var(--text-color);
  --thumb-color: #8b6cc5;
  --track-color: #14142e;
  --warning-bg: #d4a060;
  --warning-hover-bg: #b8884a;

  /* Effects */
  --disabled-opacity: 0.5;
  --focus-ring-color: var(--main-fg);
  --hover-opacity: 0.85;
  --hover-scale-sm: scale(1.01);
  --hover-scale-base: scale(1.05);
  --hover-scale-lg: scale(1.1);

  /* Fonts */
  --font-body: "Inter", "Open Sans", sans-serif;
  --font-mono: "Courier New", Courier, monospace;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.85rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.2rem;
  --font-size-xl: 1.5rem;
  --font-weight-normal: 400;
  --font-weight-demi-bold: 550;
  --font-weight-bold: 700;
  --heading-font: var(--font-body);

  /* Layout */
  --max-width-content: 700px;
  --sidebar-width: 250px;
  --width-xs: 100px;
  --width-sm: 150px;
  --width-md: 300px;
  --width-lg: 500px;
  --width-xl: 750px;
  --width-xxl: 900px;
  --width-xxxl: 1050px;
  --width-xxxxl: 1200px;

  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.2);

  /* Spacing */
  --gap-xxs: 0.125rem;
  --gap-xs: 0.25rem;
  --gap-sm: 0.5rem;
  --gap-md: 1rem;
  --gap-lg: 1.5rem;
  --gap-xl: 2rem;
  --gap-xxl: 3rem;

  --margin-xxs: 0.125rem;
  --margin-xs: 0.3rem;
  --margin-sm: 0.5rem;
  --margin-base: 1rem;
  --margin-lg: 1.5rem;
  --margin-xl: 2rem;
  --margin-xxl: 3rem;

  --padding-xxs: 0.125rem;
  --padding-xs: 0.3rem;
  --padding-sm: 0.5rem;
  --padding-base: 1rem;
  --padding-lg: 1.5rem;
  --padding-xl: 2rem;
  --padding-xxl: 3rem;

  --space-xxs: 0.125rem;
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-xxl: 3rem;

  /* Transitions */
  --transition-fast: 0.15s ease-in-out;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* Typography */
  --letter-spacing-base: 0;
  --line-height-base: 1.5;

  /* Z-Index */
  --z-overlay: 800;
  --z-sidebar: 900;
  --z-modal: 1000;
  --z-tooltip: 1100;
}

/* ――― Base elements ――― */
a.button {
  background-color: var(--sidebar-active-bg);
  border: none;
  border-radius: var(--border-radius-base);
  color: var(--main-fg);
  display: inline-block;
  margin: var(--margin-base) 0;
  padding: var(--padding-sm) var(--padding-base);
  text-align: center;
  text-decoration: none;
}

/* clickables share the pointer */
a[href],
button,
[role="button"],
input[type="button"],
input[type="submit"],
input[type="checkbox"],
input[type="radio"],
.manage-keys-link,
.route_card,
.sidebar .menu_section>li>ul>li,
.clickable {
  cursor: pointer;
}

body {
  padding-bottom: 0 !important;
}

/* ――― Layout containers ――― */
.content {
  color: var(--main-fg);
  flex-grow: 1;
  margin-left: var(--sidebar-width, 250px);
  overflow-y: auto;
  padding-bottom: var(--padding-xl);
  padding-left: var(--padding-lg);
}

/* ――― Headings ――― */
h1,
h2,
h3 {
  color: var(--text-color);
  margin: 0;
  padding: var(--padding-base) 0 var(--heading-bottom, 10px);
}

/* ――― Helpers & states ――― */
.hidden {
  display: none;
}

html {
  cursor: default;
}

.no_scroll {
  overflow: hidden;
}

.not_implemented {
  cursor: not-allowed;
  text-decoration: line-through;
}

/* ――― Base typography & page reset ――― */
html,
body {
  background-color: var(--main-bg);
  font-family: var(--font-body);
  margin: 0;
  min-height: 100dvh;
  overflow-x: hidden;
  padding: 0;
}

/* weight-override set once for all matching selectors */
html,
body,
h1,
h2,
h3,
.open-sans-regular {
  font-family: var(--font-body);
  font-optical-sizing: auto;
  font-style: normal;
  font-weight: var(--font-weight-demi-bold);
}

/* ――― HR line ――― */
hr {
  background-color: var(--sidebar-border-color);
  border: none;
  height: var(--border-width-thin);
}

/* text-inputs keep the I-beam */
input[type="email"],
input[type="number"],
input[type="password"],
input[type="search"],
input[type="text"],
.navkeys-input,
.settings .textinput,
textarea {
  cursor: text;
}

label[for] {
  cursor: default;
}

/* ――― Snackbar component ――― */
.snackbar {
  background-color: var(--color-confirm);
  border-radius: var(--border-radius-base);
  color: var(--text-color);
  margin-bottom: var(--margin-base);
  padding: var(--padding-base);
  text-align: center;
  transition: var(--snackbar-transition, 1s);
  visibility: hidden;
}

.snackbar.show {
  animation: fadein var(--snackbar-fade-time, 0.5s);
  visibility: visible;
}

/* zero-ed default list / link styles */
ul,
li,
a {
  display: block;
  list-style: none;
  margin: 0;
  padding: 0;
}

/* ――― Snackbar wrapper ――― */
#snackbar_wrapper {
  bottom: var(--snackbar-offset, 30px);
  left: var(--sidebar-width);
  margin: 0 auto;
  position: fixed;
  right: 0;
  width: min(var(--snackbar-width, 300px), 70%);
  z-index: var(--z-overlay);
}

/* ――― Animations ――― */
@keyframes fadein {
  from {
    bottom: 0;
    opacity: 0;
  }

  to {
    bottom: var(--snackbar-offset, 30px);
    opacity: 1;
  }
}

@keyframes fadeout {
  from {
    opacity: 1;
  }

  to {
    opacity: 0;
  }
}

/* ――― Breakpoint overrides ――― */
@media only screen and (max-width: var(--breakpoint-md)) {
  .content {
    margin-left: 0;
  }
}

@media only screen and (max-width: 768px) and (orientation: portrait) {
  .content {
    box-sizing: border-box;
    margin-left: 0;
    padding-left: 1rem;
    padding-right: 1rem;
  }

  #snackbar_wrapper {
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
  }
}

/* legacy WebKit keyframes */
@-webkit-keyframes fadein {
  from {
    bottom: 0;
    opacity: 0;
  }

  to {
    bottom: var(--snackbar-offset, 30px);
    opacity: 1;
  }
}

@-webkit-keyframes fadeout {
  from {
    opacity: 1;
  }

  to {
    opacity: 0;
  }
}

/* ——— Tunnel notice banner ——— */
.tunnel-notice {
  align-items: center;
  background: linear-gradient(135deg, var(--card-bg), var(--secondary-bg));
  border: var(--border-width-thin) var(--border-style-base) var(--sidebar-border-color);
  border-left: 3px solid var(--main-fg);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  color: var(--text-color);
  display: flex;
  flex-direction: column;
  gap: var(--gap-md);
  margin: var(--margin-xl) auto;
  max-width: var(--width-xl);
  padding: var(--padding-xl) var(--padding-xxl);
  text-align: center;
}

.tunnel-notice-icon {
  font-size: 2.5rem;
  opacity: 0.8;
}

.tunnel-notice-title {
  color: var(--text-color);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  margin: 0;
}

.tunnel-notice-body {
  color: var(--text-muted);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  margin: 0;
}

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

::-webkit-scrollbar-track {
  background: var(--track-color);
}

::-webkit-scrollbar-thumb {
  background-color: var(--thumb-color);
  border-radius: var(--border-radius-sm);
}