:root {
  --font-family: -apple-system, BlinkMacSystemFont, Aptos, Roboto, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
  --hover-color: var(--color-border-darker);
  --hover-size: 0.15em;
  --hover-filter: brightness(1);
}

html, body {
  -webkit-text-size-adjust: none;
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-family);
  line-height: 1.4;
  overflow: initial;
  text-size-adjust: none;
}

/* Links */
:where(a:not([class]):not(:has(img))) {
  color: var(--link-color, var(--color-link));

  @media (any-hover: hover) {
    &:where(:not(:active):hover) {
      --hover-filter: brightness(1.3);

      filter: var(--hover-filter);
    }
  }
}

:where(button, input, textarea, summary, .input, .btn) {
  --outline-size: min(0.2em, 2px);

  appearance: none;
  border: none;
  background-color: transparent;
  font: inherit;
  line-height: inherit;
  text-decoration: none;
  touch-action: manipulation;
  transition: box-shadow 150ms ease, outline-offset 150ms ease, background-color 150ms ease, opacity 150ms ease, filter 150ms ease;

  /* Hover */
  @media (any-hover: hover) {
    &:where(:not(:active):hover) {
      filter: var(--hover-filter);
      box-shadow: 0 0 0 var(--hover-size) var(--hover-color);
    }
  }

  /* Keyboard navigation */
  &:where(:not(:active)):focus-visible {
    outline-width: var(--outline-size);
    outline-color: var(--outline-color, var(--color-link));
    outline-offset: var(--outline-offset, calc(var(--outline-size) * 2));
  }

  /* Pressing */
  &:focus:not(:focus-visible) {
    --outline-offset: 0;
  }

  /* Disabled */
  &:where([disabled]):not(:hover):not(:active) {
    cursor: not-allowed;
    filter: brightness(0.75);
  }
}

/* Turbo */
turbo-frame,
turbo-cable-stream-source {
  display: contents;
}

/* For settings */
fieldset {
  border: 2px solid var(--fieldset-border-color, var(--color-border));
  border-block-end: 0;
  border-inline: 0;
  display: flex;
  flex-direction: column;
  max-inline-size: 50ch;
  padding: var(--block-space) 0;

  &.border {
    border-color: var(--color-border-darker);
    border-style: solid;
    border-width: 1px;
  }
}

legend {
  align-items: center;
  display: flex;
  justify-content: center;
  margin-inline: auto;
  text-align: center;
}

/* Dialogs */
.dialog {
  --width: 50ch;

  background-color: var(--color-bg);
  color: var(--color-text);
  margin-inline: var(--inline-space);
  inline-size: var(--width);
  max-inline-size: calc(100dvw - var(--inline-space) * 2);
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  &::backdrop {
    background-image: linear-gradient(
      45deg,
      #fff500,
      #ff9f00,
      #f00,
      #ec0061
    );
    opacity: 0.75;
  }
}

.dialog__close {
  position: absolute;
  inset: calc(var(--block-space) * 1.5) var(--inline-space) auto auto;
}

.btn--plain {
  --btn-background: transparent;
  --btn-border-color: transparent;
  --btn-border-size: 0;
  --btn-padding: 0.25em 0.75em;
  color: var(--color-text);
  text-decoration: underline;

  @media (any-hover: hover) {
    &:hover {
      text-decoration: none;
    }
  }
}

/* Misc */
menu {
  outline: 0;
}

code {
  background: var(--color-bg);
  border: 1px solid var(--color-border-dark);
  padding: 0.2em 0.4em;
  border-radius: 0.3em;
  font-weight: 500;
}

pre {
  background-color: var(--color-bg);
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monaco, monospace;
  font-size: 0.8rem;
  white-space: pre-wrap;
  word-wrap: break-word;
}

.version-badge {
  border: 1px solid var(--color-border-darker);
  border-radius: 0.3em;
  color: var(--color-border-darker);
  padding: 0.1em var(--inline-space-half);
}

/* PWA install */
.pwa__instructions {
  @media (display-mode: standalone) {
    display: none;
  }
}

.pwa__installer {
  display: none;

  .pwa--can-install & {
    display: block;
  }
}

/* Notification settings */
.notifications-help {
  padding: var(--block-space) var(--inline-space);
  background-color: var(--color-border-dark);
  border-radius: 0.5em;
  border: 1px solid var(--color-border-darker);
  color: var(--color-text);
  margin-block-end: var(--block-space-half);

  summary {
    --column-gap: var(--inline-space-half);
    --btn-background: transparent;
    --btn-border-radius: 0.5em;
    --btn-border-color: transparent;

    display: flex;
    justify-content: start;
    padding: var(--block-space) var(--inline-space);
    margin: calc(var(--block-space) * -1) calc(var(--inline-space) * -1);
  }

  .disclosure {
    margin-inline-start: auto;
    transition: transform 150ms ease;

    .notifications-help[open] & {
      transform: rotate(90deg);
    }
  }

  img {
    display: inline;
    vertical-align: text-top;

    @media (prefers-color-scheme: light) {
      filter: brightness(0);
    }

    @media (prefers-color-scheme: dark) {
      filter: invert(1);
    }
  }

  li {
    margin-block: var(--block-space-half);
  }

  em {
    background: var(--color-bg);
    border: 1px solid var(--color-border-darker);
    color: var(--color-text);
    padding: 0.15em 0.4em;
    border-radius: 0.3em;
    font-weight: 600;
    font-style: normal;
    font-size: 0.85em;
    box-shadow: 0 1px 0 var(--color-border-darker);
    display: inline-flex;
    align-items: center;
    gap: 0.2em;
    vertical-align: baseline;
  }
}

/* Language translations */
.lanuage-list-menu {
  --max-width: 40ch;

  background-color: var(--color-border);
  border: 1px solid var(--color-border-dark);
  border-radius: 0.5em;
  inset: auto;
  inline-size: max-content;
  margin-inline: var(--inline-space);
  max-inline-size: 40ch;
  overflow: clip;
  position: absolute;
  z-index: 3;

  @media (max-width: 120ch) {
    max-inline-size: calc(var(--max-width) - var(--inline-space));
  }
}

.language-list {
  display: grid;
  gap: var(--block-space-half) var(--inline-space);
  grid-template-rows: min-content;
  grid-template-columns: min-content 1fr;
  justify-content: start;
  margin: 0;
  padding: var(--block-space) var(--inline-space-double);
  text-align: start;
}

/* Nicer scrollbars on Chrome 29+. This is intended for Windows machines, but */
/* there's not a way to target Windows using CSS, so Chrome on Mac will have */
/* slightly thinner scrollbars than normal. #C1C1C1 is the default color on Macs. */
@media screen and (-webkit-min-device-pixel-ratio:0) and (min-resolution:.001dpcm) {
  * {
    scrollbar-color: #C1C1C1 transparent;
    scrollbar-width: thin;
  }
}

/* Design System */

/* === Runtime variables (referenced by Tailwind @theme) === */
:root {
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI Variable", "Segoe UI", "Noto Sans", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
  --font-mono: ui-monospace, "SF Mono", "Cascadia Code", Menlo, monospace;

  /* Layout tokens */
  --tools-width: 72px;
  --sidebar-width: calc(280px + var(--tools-width));
  --nav-height: 56px;
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --safe-top: env(safe-area-inset-top, 0px);

  /* Colors (light defaults) */
  --bg-pure: oklch(100% 0 0);
  --bg-subtle: oklch(96.5% 0.008 145);
  --bg-raised: oklch(98% 0.005 145);
  --surface: oklch(95% 0.012 145);
  --txt: oklch(20% 0.02 145);
  --txt-secondary: oklch(40% 0.02 145);
  --txt-muted: oklch(58% 0.015 145);
  --border-strong: oklch(82% 0.018 145);
  --accent-soft: oklch(93% 0.04 155);
  --accent-hover: oklch(55% 0.13 155);
  --accent-strong: oklch(48% 0.14 155);
  --msg-me: oklch(60% 0.11 155);
  --msg-me-text: oklch(100% 0 0);
  --sidebar-bg: oklch(97.5% 0.006 145);
  --sidebar-active: oklch(93% 0.03 155);
  --hover: oklch(95% 0.01 145);
  --tools: oklch(95.5% 0.008 150);
}

/* === Green pastel accent and design overrides === */
:root {
  --accent: oklch(62% 0.12 155);
  --accent-foreground: oklch(100% 0 0);
  --color-lch-white: oklch(99% 0.003 145);
  --color-lch-gray: oklch(91% 0.012 145);
  --color-lch-gray-dark: oklch(82% 0.018 145);
  --color-lch-red: oklch(55% 0.18 25);
  --color-lch-primary: oklch(65% 0.18 142);
  --color-lch-orange: oklch(72% 0.16 55);
}

/* Desktop font size (Fizzy-inspired) */
@media (min-width: 100ch) {
  :root { font-size: 1.1875rem; }
}

/* === Dark mode: placeholder visibility === */
@media (prefers-color-scheme: dark) {
  ::placeholder { opacity: 0.65; }
}
[data-theme="dark"] ::placeholder { opacity: 0.65; }

/* === Dark mode: system preference === */
@media (prefers-color-scheme: dark) {
  [data-theme="system"] {
    --color-bg: oklch(7% 0 0);
    --accent: oklch(72% 0.1 155);
    --color-lch-white: oklch(7% 0 0);
    --color-lch-gray: oklch(18% 0 0);
    --color-lch-gray-dark: oklch(25% 0 0);
    --color-lch-red: oklch(65% 0.18 25);
    --color-lch-primary: oklch(72% 0.15 142);
    --color-lch-orange: oklch(75% 0.14 55);

    --bg-pure: oklch(5% 0 0);
    --bg-subtle: oklch(10% 0 0);
    --bg-raised: oklch(13% 0 0);
    --surface: oklch(15% 0 0);
    --txt: oklch(98% 0 0);
    --txt-secondary: oklch(90% 0 0);
    --txt-muted: oklch(78% 0 0);
    --border-strong: oklch(30% 0 0);
    --accent-soft: oklch(20% 0.04 155);
    --accent-hover: oklch(78% 0.09 155);
    --accent-strong: oklch(65% 0.12 155);
    --msg-me: oklch(45% 0.08 155);
    --msg-me-text: oklch(96% 0 0);
    --sidebar-bg: oklch(8% 0 0);
    --sidebar-active: oklch(18% 0.03 155);
    --hover: oklch(15% 0 0);
    --tools: oklch(6% 0 0);
  }
}

/* === Dark mode: explicit === */
[data-theme="dark"] {
  --color-bg: oklch(7% 0 0);
  --accent: oklch(72% 0.1 155);
  --color-lch-white: oklch(7% 0 0);
  --color-lch-gray: oklch(18% 0 0);
  --color-lch-gray-dark: oklch(25% 0 0);
  --color-lch-red: oklch(65% 0.18 25);
  --color-lch-primary: oklch(72% 0.15 142);
  --color-lch-orange: oklch(75% 0.14 55);

  --bg-pure: oklch(5% 0 0);
  --bg-subtle: oklch(10% 0 0);
  --bg-raised: oklch(13% 0 0);
  --surface: oklch(15% 0 0);
  --txt: oklch(98% 0 0);
  --txt-secondary: oklch(90% 0 0);
  --txt-muted: oklch(78% 0 0);
  --border-strong: oklch(30% 0 0);
  --accent-soft: oklch(20% 0.04 155);
  --accent-hover: oklch(78% 0.09 155);
  --accent-strong: oklch(65% 0.12 155);
  --msg-me: oklch(45% 0.08 155);
  --msg-me-text: oklch(96% 0 0);
  --sidebar-bg: oklch(8% 0 0);
  --sidebar-active: oklch(18% 0.03 155);
  --hover: oklch(15% 0 0);
  --tools: oklch(6% 0 0);
}

/* === Component styles === */

/* Sidebar turbo-frame transparency */
#sidebar > turbo-frame { display: contents; }

/* Message area (from message_area_tag) */
.trix-content { line-height: 1.625; }
.trix-content a { color: var(--accent-strong); font-weight: 500; }
.trix-content code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--surface);
  padding: 2px 6px;
  border-radius: 5px;
  color: var(--accent-strong);
}
.trix-content blockquote {
  border-left: 3px solid var(--border-strong);
  padding-left: 12px;
  color: var(--txt-secondary);
}
.trix-content img, .trix-content video { max-width: 100%; border-radius: 12px; }
.trix-content .attachment { margin: 8px 0; }
.trix-content .attachment__caption { font-size: 0.85rem; color: var(--txt-muted); margin-top: 4px; }

/* Phosphor icon base */
.ph {
  display: inline-flex;
  width: 1em; height: 1em;
  vertical-align: -0.125em;
  fill: none; stroke: currentColor;
  stroke-width: 16; stroke-linecap: round; stroke-linejoin: round;
}

/* Scrollbar */
.scrollbar-thin { scrollbar-width: thin; scrollbar-color: var(--border-strong) transparent; }
.scrollbar-none { scrollbar-width: none; }
.scrollbar-none::-webkit-scrollbar { display: none; }

/* Sidebar search icon */
.sidebar-search-input {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 256 256'%3E%3Ccircle cx='112' cy='112' r='80' fill='none' stroke='%23999' stroke-linecap='round' stroke-linejoin='round' stroke-width='16'/%3E%3Cline x1='168.57' y1='168.57' x2='224' y2='224' fill='none' stroke='%23999' stroke-linecap='round' stroke-linejoin='round' stroke-width='16'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: 11px center;
  background-size: 16px;
}

/* Day separator */
.day-sep::before, .day-sep::after {
  content: ''; flex: 1; height: 1px; background: var(--color-lch-gray);
}

/* Stacked mini-avatars */
.mini-avatar + .mini-avatar { margin-left: -7px; }

/* Monogram color variants */
.monogram--0 { background: oklch(58% 0.14 25); }
.monogram--1 { background: oklch(58% 0.14 155); }
.monogram--2 { background: oklch(52% 0.16 280); }
.monogram--3 { background: oklch(60% 0.12 45); }
.monogram--4 { background: oklch(55% 0.13 320); }
.monogram--5 { background: oklch(56% 0.15 200); }