:root {
  --bg: #191919;
  --bg-grad-a: rgba(25, 25, 25, 0.97);
  --bg-grad-b: rgba(25, 25, 25, 0.99);
  --bg-glow: transparent;
  --ink: #e3e2e0;
  --muted: #aaa9a5;
  --muted-soft: #969591;
  --line: #373737;
  --line-soft: #2f2f2f;
  --panel: #202020;
  --panel-soft: #252525;
  --nested-panel: #2c2c2c;
  --accent: #e3e2e0;
  --accent-hover: #ffffff;
  --accent-soft: rgba(255, 255, 255, 0.08);
  --accent-ring: rgba(255, 255, 255, 0.2);
  --accent-glow: rgba(255, 255, 255, 0.12);
  --accent-glow-hover: rgba(255, 255, 255, 0.16);
  --on-accent: #191919;
  --amber: #ffb760;
  --rose: #ff7369;
  --blue: #8db5ff;
  --green: #6fcf97;
  --mode-material: #62a1dd;
  --mode-knowledge: #f1c978;
  --mode-research: #7fc79e;
  --mode-review: #ff9d9d;
  --selected-bg: #2c2c2c;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 12px 30px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.45);
  --radius-sm: 7px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-pill: 999px;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --header-bg: rgba(25, 25, 25, 0.9);
  --header-pill-bg: rgba(32, 32, 32, 0.82);
  --sidebar-bg: rgba(32, 32, 32, 0.88);
  --overlay-bg: rgba(0, 0, 0, 0.72);
  --border-hover: #555555;
  --dashed-border: #4a4a4a;
  --hover-tint: rgba(255, 255, 255, 0.05);
  --hover-tint-strong: rgba(255, 255, 255, 0.07);
  --blue-soft: rgba(141, 181, 255, 0.12);
  --blue-line: rgba(141, 181, 255, 0.25);
  --rose-soft: rgba(255, 115, 105, 0.12);
  color-scheme: dark;
}

:root[data-theme="light"] {
  --bg: #ffffff;
  --bg-grad-a: #ffffff;
  --bg-grad-b: #ffffff;
  --bg-glow: rgba(78, 158, 245, 0);
  --ink: #37352f;
  --muted: #6b6b68;
  --muted-soft: #70706c;
  --line: #e9e9e7;
  --line-soft: #f1f1ef;
  --panel: #ffffff;
  --panel-soft: #f7f7f5;
  --nested-panel: #f7f7f5;
  --accent: #37352f;
  --accent-hover: #2f2d28;
  --accent-soft: rgba(55, 53, 47, 0.06);
  --accent-ring: rgba(55, 53, 47, 0.16);
  --accent-glow: rgba(55, 53, 47, 0.14);
  --accent-glow-hover: rgba(55, 53, 47, 0.18);
  --on-accent: #ffffff;
  --amber: #d9730d;
  --rose: #c73535;
  --blue: #1d6fbd;
  --green: #0f7b6c;
  --mode-material: #1f6fa8;
  --mode-knowledge: #8a5d00;
  --mode-research: #24734f;
  --mode-review: #a83f46;
  --selected-bg: #efefed;
  --shadow-sm: 0 1px 2px rgba(15, 15, 15, 0.05);
  --shadow-md: 0 4px 14px rgba(15, 15, 15, 0.07);
  --shadow-lg: 0 12px 28px rgba(15, 15, 15, 0.1);
  --header-bg: rgba(255, 255, 255, 0.88);
  --header-pill-bg: #ffffff;
  --sidebar-bg: #f7f7f5;
  --overlay-bg: rgba(55, 53, 47, 0.35);
  --border-hover: #d3d1cb;
  --dashed-border: #dededb;
  --hover-tint: rgba(55, 53, 47, 0.04);
  --hover-tint-strong: rgba(55, 53, 47, 0.06);
  --blue-soft: rgba(35, 131, 226, 0.1);
  --blue-line: rgba(35, 131, 226, 0.25);
  --rose-soft: rgba(224, 62, 62, 0.1);
  color-scheme: light;
}

::selection {
  background: var(--accent-ring);
}

.project-picker { position: relative; width: 100%; min-width: 0; }
.project-picker .project-picker-trigger { display: flex; align-items: center; justify-content: space-between; gap: 9px; width: 100%; min-width: 0; min-height: 44px; padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--panel-soft); color: var(--ink); font: inherit; font-size: 13px; text-align: left; cursor: pointer; transform: none; }
.project-picker .project-picker-trigger:hover { border-color: var(--border-hover); background: var(--hover-tint); }
.project-picker .project-picker-trigger:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.project-picker .project-picker-trigger:disabled { opacity: .55; cursor: wait; }
.project-picker-value, .project-picker-option-label { display: flex; align-items: center; gap: 8px; min-width: 0; }
.project-picker-text { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.project-picker-option-label .project-picker-text { white-space: normal; }
.project-icon { display: block; flex: none; width: 20px; height: 20px; object-fit: contain; }
.project-icon--light-backdrop { padding: 2px; border-radius: 4px; background: #fff; }
.project-icon--light-surface { border-radius: 4px; background: #fff; }
.history-project-toggle .project-icon { width: 18px; height: 18px; }
.project-picker-chevron { flex: none; width: 15px; height: 15px; color: var(--muted); }
.project-picker-trigger[aria-expanded="true"] .project-picker-chevron { transform: rotate(180deg); }
.project-picker--compact { width: fit-content; max-width: 100%; }
.project-picker--compact .project-picker-trigger { justify-content: flex-start; border-color: transparent; background: transparent; padding-inline: 8px; font-weight: 600; }
.project-picker--compact .project-picker-trigger:hover { border-color: transparent; }
.project-picker-list { position: absolute; z-index: 60; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; box-sizing: border-box; overflow: visible; padding: 5px; border: 1px solid var(--line); border-radius: 10px; background: var(--panel); box-shadow: var(--shadow-md); }
.project-picker-list[hidden] { display: none !important; }
.project-picker-list > .project-picker-option { grid-column: 1 / -1; }
.project-picker-group { min-width: 0; }
.project-picker-group-title { margin-bottom: 3px; padding: 10px 11px; border-radius: 5px; background: var(--selected-bg); color: var(--ink); font-size: 14px; font-weight: 750; line-height: 1.35; }
.project-picker-option { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 38px; box-sizing: border-box; padding: 9px 11px; border-radius: 6px; color: var(--ink); font-size: 13px; line-height: 1.4; cursor: pointer; scroll-margin-block: 40px; }
.project-picker-option:hover, .project-picker-option.is-active { background: var(--hover-tint-strong); }
.project-picker-option[aria-selected="true"] { font-weight: 650; }
.project-picker-check { flex: none; width: 16px; height: 16px; visibility: hidden; }
.project-picker-option[aria-selected="true"] .project-picker-check { visibility: visible; }
@media (pointer: coarse) { .project-picker-option { min-height: 44px; } }
@media (max-width: 480px) {
  .project-picker-list { gap: 4px; padding: 4px; }
  .project-picker-group-title { padding: 8px; font-size: 12px; }
  .project-picker-option { min-height: 34px; padding: 6px 7px; gap: 5px; font-size: 11.5px; line-height: 1.25; }
  .project-picker-option-label { gap: 5px; }
  .project-picker-option-label .project-picker-text { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .project-picker-option .project-icon { width: 17px; height: 17px; }
  .project-picker-check { width: 13px; height: 13px; }
}

.brand-mark {
  background: transparent;
  box-shadow: none;
  overflow: hidden;
  position: relative;
}

.brand-mark-icon {
  display: block;
  position: absolute;
  top: 50%;
  left: 50%;
  width: 54px;
  height: 54px;
  max-width: none;
  object-fit: contain;
  pointer-events: none;
  transform: translate(-50%, -50%);
  user-select: none;
}

.brand-mark-icon--ink {
  display: none;
}

:root[data-theme="light"] .brand-mark-icon--ink {
  display: block;
}

:root[data-theme="light"] .brand-mark-icon--paper {
  display: none;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
[tabindex]:focus-visible {
  outline: none;
}

.brand,
.theme-toggle,
.header-user,
.back-link,
.telegram-link,
.modal-close,
.sidebar-history-delete,
.sidebar-history-toggle,
.profile-menu-item,
.auth-switch button,
.practice-switch-btn,
.segmented-btn,
.turn-use-base,
.hero-chip,
.doc-nav a,
button.primary,
button.secondary {
  min-block-size: 44px;
}

.theme-toggle,
.modal-close,
.sidebar-history-delete {
  min-inline-size: 44px;
}

input:not([type="hidden"]),
select {
  min-block-size: 44px;
}

@media (max-width: 760px) {
  input,
  select,
  textarea {
    font-size: 16px !important;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto !important;
  }

  .profile-menu-chevron,
  .sidebar-history-toggle .icon {
    transition: none !important;
  }

  .mode-card:hover {
    transform: none !important;
  }
}