/* === CSS/THEME-TOKENS.CSS === */
/* BrokeArtist Studio Core Tokens, Theme Variables, Dropdown & Accessible Dialog Shell.
 * Clean-boot default theme: xerox-alto (Xerox Alto - PARC 1973).
 * Strictly colors, fonts, UI scaling, panel docking, and WCAG 2.2 AA rules (Zero CRT, Zero Waveform).
 */

:root {
    --main-color: #0c0d0e;
    --bg-color: #e5e8eb;
    --text-color: #0c0d0e;
    --sub-color: #4b525c;
    --panel-bg: #d5d9de;
    --panel-text: #0c0d0e;
    --header-bg: #e5e8eb;
    --header-text: #0c0d0e;
    --header-border: rgba(12, 13, 14, 0.22);
    --main-contrast-text: #ffffff;
    --success-color: #2e7d32;
    --warning-color: color-mix(in srgb, var(--main-color) 85%, var(--panel-text));
    --danger-color: #c93b2b;
    --button-bg: color-mix(in srgb, var(--main-color) 10%, var(--panel-bg));
    --button-fg: #0c0d0e;
    --button-border: rgba(12, 13, 14, 0.28);
    --button-active-bg: #0c0d0e;
    --button-active-fg: #ffffff;
    --cjk-stack: "Noto Sans JP", "Noto Sans SC", "Noto Sans KR", "Microsoft YaHei", "Meiryo", "Malgun Gothic", sans-serif;
    --font-family: 'Courier Prime', monospace;
    --ui-font-size: 13px;
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    min-height: 100vh;
    overflow: hidden;
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-family), var(--cjk-stack);
    font-size: var(--ui-font-size);
}

body {
    display: flex;
    flex-direction: column;
}

.sr-only {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

.skip-links-nav {
    position: relative;
    z-index: 9999;
}

.skip-link {
    position: absolute;
    left: -9999px;
    top: 4px;
    z-index: 10000;
    padding: 8px 14px;
    background: var(--button-active-bg);
    color: var(--button-active-fg);
    border: 2px solid var(--main-color);
    border-radius: 4px;
    font-weight: 700;
    text-decoration: none;
}

.skip-link:focus {
    left: 8px;
}

:focus-visible {
    outline: 2px solid var(--main-color);
    outline-offset: 2px;
}

.fs-icon {
    display: inline-block;
    vertical-align: middle;
    flex-shrink: 0;
}

.fs-icon-inline-gap {
    display: inline-flex;
    align-items: center;
}

/* === SCROLLBARS === */
*::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

*::-webkit-scrollbar-track {
    background: var(--panel-bg);
}

*::-webkit-scrollbar-thumb {
    background: color-mix(in srgb, var(--main-color) 45%, transparent);
    border-radius: 4px;
}

*::-webkit-scrollbar-thumb:hover {
    background: var(--main-color);
}

/* === STUDIO HEADER & WORKSPACE DROPDOWN === */
.studio-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 8px 12px;
    padding: 6px 12px;
    min-height: 46px;
    background-color: var(--header-bg, var(--panel-bg));
    color: var(--header-text, var(--panel-text));
    border-bottom: 1px solid var(--header-border, color-mix(in srgb, var(--main-color) 24%, transparent));
    flex-shrink: 0;
    z-index: 60;
}

.studio-topbar-group {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px;
}

.studio-brand-mark {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-weight: 800;
    font-size: 13px;
    letter-spacing: 0.04em;
    color: var(--header-text, var(--main-color));
    padding-right: 6px;
    border-right: 1px solid var(--header-border);
}

.workspace-dropdown-container {
    position: relative;
    z-index: 2500;
}

.ws-dropdown-btn {
    box-sizing: border-box;
    min-height: 30px;
    padding: 4px 10px;
    background: var(--button-bg);
    border: 1px solid var(--button-border, var(--main-color));
    border-radius: 4px;
    color: var(--button-fg);
    cursor: pointer;
    font-family: var(--font-family), inherit;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
}

.ws-dropdown-btn:hover,
.ws-dropdown-btn[aria-expanded="true"] {
    background: color-mix(in srgb, var(--main-color) 16%, var(--panel-bg));
    border-color: var(--main-color);
}

.ws-dropdown-arrow {
    font-size: 9px;
    transition: transform 0.15s ease;
}

.ws-dropdown-btn[aria-expanded="true"] .ws-dropdown-arrow {
    transform: rotate(180deg);
}

.ws-dropdown-menu {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    min-width: 220px;
    background: var(--panel-bg);
    color: var(--panel-text);
    border: 1px solid var(--main-color);
    border-radius: 4px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.22);
    z-index: 99999;
    padding: 4px;
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.ws-menu-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    width: 100%;
    min-height: 34px;
    padding: 6px 10px;
    background: transparent;
    border: 1px solid transparent;
    border-radius: 3px;
    color: var(--panel-text);
    font-family: var(--font-family), inherit;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    text-align: left;
}

.ws-menu-item:hover,
.ws-menu-item:focus-visible {
    background: color-mix(in srgb, var(--main-color) 12%, transparent);
    border-color: color-mix(in srgb, var(--main-color) 35%, transparent);
}

.ws-menu-item.active,
.ws-menu-item[aria-checked="true"] {
    background: var(--button-active-bg, var(--main-color));
    color: var(--button-active-fg, var(--main-contrast-text));
    border-color: var(--main-color);
    font-weight: 700;
}

.ws-menu-name {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.ws-menu-hint {
    font-size: 10px;
    opacity: 0.78;
}

.studio-btn,
.studio-select {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    min-height: 30px;
    padding: 4px 9px;
    border: 1px solid var(--button-border);
    border-radius: 4px;
    background: var(--button-bg);
    color: var(--button-fg);
    font-family: var(--font-family), inherit;
    font-size: 11px;
    font-weight: 700;
    cursor: pointer;
    white-space: nowrap;
}

.studio-btn:hover {
    border-color: var(--main-color);
    background: color-mix(in srgb, var(--main-color) 16%, var(--panel-bg));
}

.studio-btn.is-primary,
.studio-btn[aria-pressed="true"] {
    background: var(--button-active-bg);
    color: var(--button-active-fg);
    border-color: var(--main-color);
}

.studio-project-bar {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 6px;
    border: 1px solid var(--header-border);
    border-radius: 4px;
    background: color-mix(in srgb, var(--panel-bg) 82%, var(--bg-color));
}

.studio-project-select {
    min-width: 150px;
    max-width: 220px;
}

/* === STUDIO HOST LAYOUT & PANEL DOCK === */
.studio-main {
    flex: 1 1 auto;
    min-height: 0;
    display: flex;
    flex-direction: column;
    position: relative;
}

.studio-host {
    flex: 1 1 auto;
    min-height: 0;
    display: flex;
    flex-direction: column;
}

.studio-host .atlas-workspace-shell,
.studio-host .paint-studio-shell {
    height: 100%;
    min-height: 0;
}

body.panel-dock-left .paint-body,
body.panel-dock-left .atlas-workspace-body,
body.panel-dock-left .atlas-body {
    flex-direction: row-reverse;
}

/* === ACCESSIBLE NATIVE MODAL DIALOGS === */
.studio-dialog {
    width: min(740px, calc(100vw - 24px));
    max-height: calc(100vh - 32px);
    padding: 16px;
    border: 2px solid var(--main-color);
    border-radius: 6px;
    background: var(--panel-bg);
    color: var(--panel-text);
    font-family: var(--font-family), sans-serif;
    box-shadow: 0 18px 48px rgba(0, 0, 0, 0.35);
    overflow: auto;
}

.studio-dialog::backdrop {
    background: rgba(12, 13, 14, 0.55);
}

.studio-dialog-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding-bottom: 10px;
    margin-bottom: 12px;
    border-bottom: 1px solid var(--header-border);
}

.studio-dialog-header h2 {
    margin: 0;
    font-size: 16px;
    color: var(--main-color);
}

.studio-dialog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
    gap: 10px;
    margin-bottom: 12px;
}

.studio-field {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 8px;
    border: 1px solid var(--header-border);
    border-radius: 4px;
    background: color-mix(in srgb, var(--bg-color) 60%, var(--panel-bg));
}

.studio-field label,
.studio-field-title {
    font-size: 11px;
    font-weight: 700;
    color: var(--panel-text);
}

.studio-field input[type="color"] {
    width: 100%;
    height: 32px;
    border: 1px solid var(--button-border);
    border-radius: 3px;
    background: transparent;
    cursor: pointer;
}

.studio-field input[type="text"],
.studio-field input[type="range"],
.studio-field select,
.studio-field textarea {
    width: 100%;
    font-family: inherit;
    font-size: 12px;
    color: var(--panel-text);
    background: var(--bg-color);
    border: 1px solid var(--button-border);
    border-radius: 3px;
    padding: 4px 6px;
}

.studio-check-row {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 0;
}

.theme-catalog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(158px, 1fr));
    gap: 8px;
    max-height: 250px;
    overflow-y: auto;
    padding: 6px;
    border: 1px solid var(--header-border);
    border-radius: 4px;
    background: var(--bg-color);
}

.theme-preset-card {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    padding: 8px;
    border: 1px solid var(--button-border);
    border-radius: 4px;
    cursor: pointer;
    text-align: left;
    font-family: inherit;
}

.theme-preset-card[aria-pressed="true"] {
    outline: 2px solid var(--main-color);
    outline-offset: 1px;
}

.audio-section-heading {
    margin: 10px 0 6px;
    font-size: 12px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--main-color);
}

.audio-mixer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(185px, 1fr));
    gap: 8px;
}

.audio-channel-card {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 6px 8px;
    border: 1px solid var(--header-border);
    border-radius: 4px;
    background: color-mix(in srgb, var(--bg-color) 65%, var(--panel-bg));
}

.audio-channel-card label {
    display: flex;
    justify-content: space-between;
    font-size: 11px;
    font-weight: 700;
}

.share-qr-preview {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 180px;
    padding: 12px;
    background: #ffffff;
    border: 1px solid var(--button-border);
    border-radius: 4px;
}

.studio-dialog-footer {
    display: flex;
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 12px;
    padding-top: 10px;
    border-top: 1px solid var(--header-border);
}

/* === QUICK TOUCH ACTION BAR (44x44px TARGETS) === */
.atlas-quick-touch-bar {
    position: fixed;
    right: 14px;
    bottom: 14px;
    z-index: 90;
    display: flex;
    gap: 6px;
    padding: 6px;
    background: var(--panel-bg);
    border: 2px solid var(--main-color);
    border-radius: 6px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
}

.atlas-quick-touch-bar[hidden] {
    display: none !important;
}

.atlas-quick-touch-btn {
    min-width: 44px;
    min-height: 44px;
    padding: 6px 10px;
    border: 1px solid var(--button-border);
    border-radius: 4px;
    background: var(--button-bg);
    color: var(--button-fg);
    font-weight: 700;
    font-size: 11px;
    cursor: pointer;
}

.atlas-quick-touch-btn[aria-pressed="true"] {
    background: var(--button-active-bg);
    color: var(--button-active-fg);
}

/* === ACCESSIBILITY & MOTION OVERRIDES === */
body.epilepsy-safe *,
body.epilepsy-safe *::before,
body.epilepsy-safe *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
        scroll-behavior: auto !important;
    }
}

body.high-contrast-mode {
    --button-border: currentColor;
    --header-border: currentColor;
}

body.high-contrast-mode button,
body.high-contrast-mode select,
body.high-contrast-mode input {
    border-width: 2px !important;
}

@media (forced-colors: active) {
    * {
        forced-color-adjust: auto;
    }
    .ws-dropdown-btn,
    .ws-dropdown-menu,
    .studio-btn,
    .studio-dialog,
    .paint-btn,
    .atlas-btn {
        border: 1px solid ButtonText !important;
    }
    :focus-visible {
        outline: 2px solid Highlight !important;
        outline-offset: 2px;
    }
}

@media (max-width: 720px) {
    .studio-topbar {
        padding: 4px 8px;
    }
    .studio-project-select {
        min-width: 110px;
    }
}