/* ============================================================
   CESIVI Modern UI — Ribbon + CommandBar
   All selectors scoped under body[data-modern-ui="true"]
   State machine driven by body[data-ribbon="ribbon|collapsed|commandbar"]
   ============================================================ */

/* ---------- Ribbon area container ---------- */
body[data-modern-ui="true"] .ribbon-area {
    background: var(--bg-panel);
    border-bottom: 1px solid var(--border);
    min-width: 0;
    overflow: hidden;
}

/* ---------- Ribbon tabs row ---------- */
body[data-modern-ui="true"] .ribbon-tabs {
    display: flex;
    align-items: center;
    gap: 2px;
    padding: 0 12px;
    border-bottom: 1px solid var(--border-subtle);
    height: 34px;
}

body[data-modern-ui="true"] .ribbon-tab {
    padding: 0 12px;
    height: 100%;
    color: var(--fg-muted);
    font-weight: 500;
    display: flex;
    align-items: center;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    font-size: var(--font-size-sm);
    background: none;
    border-top: none;
    border-left: none;
    border-right: none;
    cursor: pointer;
    transition: color 0.1s;
}

body[data-modern-ui="true"] .ribbon-tab:hover {
    color: var(--fg);
}

body[data-modern-ui="true"] .ribbon-tab.active {
    color: var(--fg);
    border-bottom-color: var(--accent);
}

body[data-modern-ui="true"] .ribbon-tab.contextual {
    color: oklch(0.45 0.14 330);
    padding-left: 16px;
    margin-left: 8px;
    border-left: 1px solid var(--border);
    border-top: none;
    border-right: none;
}

body[data-modern-ui="true"] .ribbon-tab.contextual.active {
    border-bottom-color: oklch(0.55 0.15 330);
}

body[data-modern-ui="true"] .ribbon-tabs .spacer {
    flex: 1;
}

body[data-modern-ui="true"] .ribbon-tabs .ribbon-toggle {
    font-size: 11px;
    color: var(--fg-muted);
    padding: 0 8px;
    height: 22px;
    border-radius: 4px;
    background: none;
    border: none;
    cursor: pointer;
    transition: background 0.1s, color 0.1s;
}

body[data-modern-ui="true"] .ribbon-tabs .ribbon-toggle:hover {
    background: var(--bg-hover);
    color: var(--fg);
}

/* ---------- Ribbon body ---------- */
body[data-modern-ui="true"] .ribbon-body {
    display: flex;
    padding: 6px 8px 8px;
    gap: 0;
    overflow-x: auto;
    overflow-y: hidden;
    min-height: var(--ribbon-h);
    justify-content: flex-start;
    scrollbar-width: thin;
    scrollbar-color: var(--border) transparent;
}

/* ---------- Ribbon groups ---------- */
body[data-modern-ui="true"] .ribbon-group {
    display: inline-flex;
    flex-direction: column;
    padding: 0 6px;
    border-right: 1px solid var(--border-subtle);
    min-width: 0;
    flex-shrink: 0;
    width: max-content;
}

body[data-modern-ui="true"] .ribbon-group:last-child {
    border-right: none;
}

body[data-modern-ui="true"] .ribbon-group-body {
    display: flex;
    gap: 0;
    align-items: flex-start;
    padding-bottom: 2px;
    width: max-content;
}

body[data-modern-ui="true"] .ribbon-group-label {
    font-size: 10.5px;
    color: var(--fg-muted);
    text-align: center;
    letter-spacing: 0.02em;
    padding-top: 2px;
}

/* ---------- Large ribbon buttons ---------- */
body[data-modern-ui="true"] .rb-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding: 3px 6px;
    border-radius: var(--radius-sm);
    color: var(--fg);
    gap: 3px;
    min-width: 48px;
    max-width: 86px;
    flex: 0 0 auto;
    width: auto;
    font-size: 11.5px;
    background: none;
    border: none;
    cursor: pointer;
    transition: background 0.1s;
    text-align: center;
}

body[data-modern-ui="true"] .rb-btn:hover {
    background: var(--bg-hover);
}

body[data-modern-ui="true"] .rb-btn:active,
body[data-modern-ui="true"] .rb-btn.active {
    background: var(--bg-active);
}

body[data-modern-ui="true"] .rb-btn .ic {
    width: 24px;
    height: 24px;
    display: grid;
    place-items: center;
    color: var(--fg-muted);
    flex-shrink: 0;
    font-size: 18px;
}

body[data-modern-ui="true"] .rb-btn.primary .ic {
    color: var(--accent);
}

body[data-modern-ui="true"] .rb-btn .lbl {
    line-height: 1.15;
    text-align: center;
    max-width: 70px;
    white-space: normal;
    font-size: 11.5px;
}

body[data-modern-ui="true"] .rb-btn.split {
    padding-right: 4px;
}

body[data-modern-ui="true"] .rb-btn.chev {
    opacity: 0.5;
    margin-top: -2px;
}

body[data-modern-ui="true"] .rb-btn:disabled,
body[data-modern-ui="true"] .rb-btn[disabled] {
    opacity: 0.45;
    cursor: default;
}

body[data-modern-ui="true"] .rb-btn:disabled:hover,
body[data-modern-ui="true"] .rb-btn[disabled]:hover {
    background: none;
}

/* ---------- Small ribbon buttons (stacked) ---------- */
body[data-modern-ui="true"] .rb-small-stack {
    display: flex;
    flex-direction: column;
    gap: 1px;
    flex: 0 0 auto;
}

body[data-modern-ui="true"] .rb-btn-sm {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 3px 8px 3px 6px;
    border-radius: var(--radius-sm);
    color: var(--fg);
    font-size: var(--font-size-sm);
    min-width: 96px;
    flex: 0 0 auto;
    background: none;
    border: none;
    cursor: pointer;
    transition: background 0.1s;
}

body[data-modern-ui="true"] .rb-btn-sm:hover {
    background: var(--bg-hover);
}

body[data-modern-ui="true"] .rb-btn-sm .ic {
    width: 14px;
    height: 14px;
    color: var(--fg-muted);
    font-size: 13px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

body[data-modern-ui="true"] .rb-btn-sm .chev {
    margin-left: auto;
    opacity: 0.4;
    font-size: 10px;
}

body[data-modern-ui="true"] .rb-btn-sm:disabled,
body[data-modern-ui="true"] .rb-btn-sm[disabled] {
    opacity: 0.45;
    cursor: default;
}

body[data-modern-ui="true"] .rb-btn-sm:disabled:hover,
body[data-modern-ui="true"] .rb-btn-sm[disabled]:hover {
    background: none;
}

/* ---------- EditRibbon font controls ---------- */
body[data-modern-ui="true"] .rb-font-row {
    display: flex;
    gap: 4px;
    margin-bottom: 4px;
}

body[data-modern-ui="true"] .rb-font-row select.ctl {
    height: 22px;
    font-size: 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-panel);
    color: var(--fg);
    padding: 0 4px;
}

body[data-modern-ui="true"] .rb-font-btns {
    display: flex;
    gap: 1px;
}

body[data-modern-ui="true"] .rb-font-btns .rb-btn-sm {
    min-width: 0;
    padding: 2px 6px;
}

/* ---------- Command bar ---------- */
body[data-modern-ui="true"] .commandbar {
    display: flex;
    align-items: center;
    padding: 0 12px;
    height: var(--commandbar-h);
    gap: 8px; /* ik 2ade C: more space so adjacent buttons (Share / Follow) don't read as one */
    border-bottom: 1px solid var(--border);
    background: var(--bg-panel);
}

body[data-modern-ui="true"] .cb-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 5px 10px;
    border-radius: var(--radius-sm);
    color: var(--fg);
    font-size: var(--font-size-sm);
    height: 28px;
    background: var(--bg-panel);
    border: 1px solid var(--border); /* ik 2ade C: resting border so each button is clearly delineated */
    cursor: pointer;
    transition: background 0.1s, border-color 0.1s;
    white-space: nowrap;
}

body[data-modern-ui="true"] .cb-btn:hover {
    background: var(--bg-hover);
    border-color: var(--border-strong);
}

body[data-modern-ui="true"] .cb-btn.primary {
    background: var(--accent);
    border-color: var(--accent);
    color: white;
}

body[data-modern-ui="true"] .cb-btn.primary:hover {
    background: var(--accent-hover);
}

body[data-modern-ui="true"] .cb-btn .ic {
    width: 14px;
    height: 14px;
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

body[data-modern-ui="true"] .cb-btn.has-chev {
    padding-right: 6px;
}

body[data-modern-ui="true"] .cb-btn .chev {
    opacity: 0.5;
    font-size: 10px;
}

body[data-modern-ui="true"] .cb-btn:disabled,
body[data-modern-ui="true"] .cb-btn[disabled] {
    opacity: 0.45;
    cursor: default;
}

body[data-modern-ui="true"] .cb-btn:disabled:hover,
body[data-modern-ui="true"] .cb-btn[disabled]:hover {
    background: none;
}

body[data-modern-ui="true"] .cb-btn.primary:disabled,
body[data-modern-ui="true"] .cb-btn.primary[disabled] {
    opacity: 0.55;
}

body[data-modern-ui="true"] .cb-divider {
    width: 1px;
    height: 18px;
    background: var(--border);
    margin: 0 4px;
    flex-shrink: 0;
}

body[data-modern-ui="true"] .cb-spacer {
    flex: 1;
}

body[data-modern-ui="true"] .cb-selection {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: var(--font-size-sm);
    color: var(--fg-muted);
    margin-right: 4px;
    padding-right: 10px;
    border-right: 1px solid var(--border);
}

body[data-modern-ui="true"] .cb-selection .count {
    background: var(--accent-soft);
    color: var(--accent-fg);
    font-weight: 600;
    padding: 1px 6px;
    border-radius: 10px;
    font-family: var(--font-mono);
    font-size: 11px;
}

/* Selection-aware commandbar */
body[data-modern-ui="true"] .commandbar .cb-when-selected { display: none; }
body[data-modern-ui="true"] .commandbar.cb-selecting .cb-default { display: none; }
body[data-modern-ui="true"] .commandbar.cb-selecting .cb-when-selected { display: contents; }

/* ============================================================
   RIBBON STATE MACHINE — body[data-ribbon] controls visibility
   ============================================================ */

/* "ribbon" mode: show tabs+body, hide commandbar + MLV inline commandbar (BUG-0817) */
body[data-modern-ui="true"][data-ribbon="ribbon"] .commandbar,
body[data-modern-ui="true"][data-ribbon="collapsed"] .commandbar,
body[data-modern-ui="true"][data-ribbon="ribbon"] .mlv-commandbar,
body[data-modern-ui="true"][data-ribbon="collapsed"] .mlv-commandbar {
    display: none;
}

/* "commandbar" mode: hide tabs+body, show commandbar */
body[data-modern-ui="true"][data-ribbon="commandbar"] .ribbon-tabs,
body[data-modern-ui="true"][data-ribbon="commandbar"] .ribbon-body {
    display: none;
}

/* "collapsed" mode: show tabs only (body hidden) */
body[data-modern-ui="true"][data-ribbon="collapsed"] .ribbon-body {
    display: none;
}

/* Peek mode: temporarily reveal the active ribbon body when user clicks a tab */
body[data-modern-ui="true"][data-ribbon="collapsed"][data-ribbon-peek] .ribbon-body:not([hidden]) {
    display: block;
}

/* Expand handle: visible affordance shown only in collapsed mode */
.ribbon-collapsed-handle {
    display: none;
}
body[data-modern-ui="true"][data-ribbon="collapsed"] .ribbon-collapsed-handle {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 2px 10px;
    font-size: 11px;
    color: var(--fg-subtle);
    cursor: pointer;
    border-top: 1px solid var(--border, #e0e0e0);
    user-select: none;
    min-height: 20px;
}
body[data-modern-ui="true"][data-ribbon="collapsed"] .ribbon-collapsed-handle:hover,
body[data-modern-ui="true"][data-ribbon="collapsed"] .ribbon-collapsed-handle:focus {
    color: var(--accent-fg, var(--accent, #0066cc));
    outline: none;
}

/* Default if data-ribbon is missing — show commandbar (safe fallback) */
body[data-modern-ui="true"]:not([data-ribbon]) .ribbon-tabs,
body[data-modern-ui="true"]:not([data-ribbon]) .ribbon-body {
    display: none;
}

/* ============================================================
   MOBILE OVERRIDE — below 640px force commandbar
   ============================================================ */
@media (max-width: 640px) {
    body[data-modern-ui="true"] .ribbon-tabs,
    body[data-modern-ui="true"] .ribbon-body {
        display: none !important;
    }

    body[data-modern-ui="true"] .commandbar {
        display: flex !important;
    }
}

/* ============================================================
   TOPBAR RIBBON TOGGLE BUTTON + POPOVER
   ============================================================ */

body[data-modern-ui="true"] .topbar .ribbon-mode-btn {
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 3px 8px;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    color: var(--fg-muted);
    background: none;
    border: 1px solid var(--border);
    cursor: pointer;
    transition: background 0.1s, color 0.1s;
    height: 26px;
    white-space: nowrap;
    position: relative;
}

body[data-modern-ui="true"] .topbar .ribbon-mode-btn:hover {
    background: var(--bg-hover);
    color: var(--fg);
}

body[data-modern-ui="true"] .topbar .ribbon-mode-btn .chev {
    font-size: 10px;
    opacity: 0.5;
}

/* Popover */
body[data-modern-ui="true"] .ribbon-mode-popover {
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    padding: 4px;
    min-width: 160px;
    z-index: 100;
    display: none;
}

body[data-modern-ui="true"] .ribbon-mode-popover.open {
    display: block;
}

body[data-modern-ui="true"] .ribbon-mode-popover button {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    padding: 6px 10px;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    color: var(--fg);
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    transition: background 0.1s;
}

body[data-modern-ui="true"] .ribbon-mode-popover button:hover {
    background: var(--bg-hover);
}

body[data-modern-ui="true"] .ribbon-mode-popover button.active {
    color: var(--accent-fg);
    font-weight: 500;
}

body[data-modern-ui="true"] .ribbon-mode-popover button .ic {
    width: 16px;
    text-align: center;
    font-size: 14px;
    color: var(--fg-muted);
    flex-shrink: 0;
}

body[data-modern-ui="true"] .ribbon-mode-popover button.active .ic {
    color: var(--accent);
}

/* BUG-0096: ribbon-tabs.js tab switching — hide inactive tab bodies */
body[data-modern-ui="true"] .ribbon-body[hidden] {
    display: none;
}


/* BUG-1024/1025: density dropdown menu items */
body[data-modern-ui="true"] .density-ribbon-item {
    display: block;
    width: 100%;
    padding: 7px 16px;
    background: none;
    border: none;
    text-align: left;
    font-size: 13px;
    cursor: pointer;
    color: var(--fg);
    white-space: nowrap;
}
body[data-modern-ui="true"] .density-ribbon-item:hover {
    background: var(--bg-hover);
}
body[data-modern-ui="true"] .density-ribbon-item[aria-checked="true"] {
    color: var(--accent);
    font-weight: 600;
}

/* ============================================================
   PLAN-1364 Phase 3 — Mobile cmdbar: 44px touch targets + overflow "More" menu
   ============================================================ */

/* Touch target floor at ≤--bp-tablet */
@media (max-width: 768px) { /* token: --bp-tablet */
  body[data-modern-ui="true"] .cb-btn {
    min-inline-size: var(--touch-target-min);
    min-block-size:  var(--touch-target-min);
    height: auto;
    padding: 10px 12px;
  }
  body[data-modern-ui="true"] .commandbar {
    height: auto;
    min-block-size: var(--commandbar-h);
    padding: 4px 8px;
  }
}

/* "More" overflow button — hidden at desktop, shown when JS activates overflow mode */
body[data-modern-ui="true"] .cb-more-btn {
  display: none;
  align-items: center;
  gap: 4px;
  padding: 5px 10px;
  border-radius: var(--radius-sm);
  color: var(--fg);
  font-size: var(--font-size-sm);
  height: 28px;
  background: none;
  border: none;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.1s;
  position: relative;
  flex-shrink: 0;
}

body[data-modern-ui="true"] .cb-more-btn:hover {
  background: var(--bg-hover);
}

/* JS adds .cb-overflow-active to .commandbar when More button is active */
body[data-modern-ui="true"] .commandbar.cb-overflow-active .cb-more-btn {
  display: flex;
}

/* Overflow dropdown panel */
body[data-modern-ui="true"] .cb-overflow-menu {
  display: none;
  position: absolute;
  top: calc(100% + 4px);
  right: 0;
  min-width: 180px;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 4px 16px oklch(0.15 0.02 240 / 0.12);
  z-index: 300;
  padding: 4px 0;
  flex-direction: column;
}

body[data-modern-ui="true"] .cb-more-btn[aria-expanded="true"] + .cb-overflow-menu,
body[data-modern-ui="true"] .cb-overflow-menu.open {
  display: flex;
}

/* Buttons inside the overflow menu */
body[data-modern-ui="true"] .cb-overflow-menu .cb-btn {
  width: 100%;
  height: auto;
  min-block-size: var(--touch-target-min);
  border-radius: 0;
  padding: 10px 14px;
  justify-content: flex-start;
}

/* Buttons moved into the overflow (hidden from the toolbar) */
body[data-modern-ui="true"] .cb-btn[data-overflowed="true"] {
  display: none !important;
}

body[data-modern-ui="true"] .cb-divider[data-overflowed="true"] {
  display: none !important;
}