/* Flat dark surfaces, Excalidraw-native feel.
   Class names kept as `.glass` / `.glass-button` for backwards compat with Razor components;
   visual treatment is now flat (no backdrop-filter, no refraction). */

.glass {
    position: relative;
    border-radius: var(--radius-md);
    background: var(--quindi-surface);
    border: 1px solid var(--quindi-border);
    box-shadow: var(--glass-shadow-soft);
    overflow: hidden;
}

.glass.dark {
    background: #050505;
    border-color: var(--glass-border-dark);
    color: var(--quindi-text);
}

.glass.soft { box-shadow: none; border-color: var(--quindi-border-soft); }

/* `.refract` no longer applies a filter — kept as a no-op for callers. */
.glass.refract { /* no-op */ }

.glass-button {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 14px;
    border: 1px solid var(--quindi-border);
    background: var(--quindi-surface-2);
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 500;
    font-family: inherit;
    color: var(--quindi-text);
    cursor: pointer;
    text-decoration: none;
    transition: background 0.12s ease, border-color 0.12s ease, color 0.12s ease;
}
.glass-button:hover { border-color: var(--accent); color: var(--accent); }
.glass-button:active { transform: translateY(1px); }
.glass-button[disabled] { opacity: 0.5; cursor: not-allowed; }

.glass-button.primary {
    background: var(--accent);
    color: #050505;
    border-color: var(--accent);
}
.glass-button.primary:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
    color: #050505;
}

.glass-button.success {
    background: var(--accent);
    color: #050505;
    border-color: var(--accent);
}

.glass-button.ghost {
    background: transparent;
    border-color: transparent;
}
.glass-button.ghost:hover {
    background: var(--accent-soft);
    border-color: transparent;
    color: var(--quindi-text);
}

.glass-button.danger {
    background: transparent;
    border-color: var(--quindi-red);
    color: var(--quindi-red);
}
.glass-button.danger:hover {
    background: var(--quindi-red);
    color: #fff;
}

/* Variante 'warn' — ambra. Usata per azioni di tipo segnalazione/avviso che
   non sono distruttive (quindi 'danger' rosso sarebbe semanticamente sbagliato)
   ma devono distinguersi dai bottoni neutri 'ghost'/'default'. Pattern attuale:
   il pulsante 'Segnala bug' in topbar dashboard. */
.glass-button.warn {
    background: transparent;
    border-color: #FFB020;
    color: #FFB020;
}
.glass-button.warn:hover {
    background: #FFB020;
    color: #1a1a1a;
    border-color: #FFB020;
}

.glass-modal-backdrop {
    position: fixed; inset: 0;
    background: var(--scrim);
    display: grid; place-items: center;
    z-index: 100;
    animation: glass-fade 0.18s ease;
}
.glass-modal {
    min-width: 480px;
    max-width: 720px;
    padding: 24px;
    background: var(--quindi-surface);
    border: 1px solid var(--quindi-border);
    border-radius: var(--radius-md);
    box-shadow: var(--glass-shadow);
    animation: glass-pop 0.2s ease;
}
/* Wide variant for content that needs near-viewport real estate (e.g. an
   Excalidraw preview canvas). The modal becomes a column with header / canvas /
   footer; the canvas slot flexes to fill what remains. */
.glass-modal.wide {
    width: 92vw;
    max-width: 92vw;
    height: 88vh;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.glass-modal.wide .modal-canvas { flex: 1; min-height: 0; position: relative; }
.glass-modal.wide .modal-canvas .excalidraw-host { position: absolute; inset: 0; }
.glass-modal.wide .modal-header,
.glass-modal.wide .modal-footer {
    display: flex; align-items: center; gap: 12px;
}
.glass-modal.wide .modal-header .meta {
    display: flex; flex-direction: column; gap: 2px; flex: 1; min-width: 0;
}
.glass-modal.wide .modal-header .meta .title { font-weight: 600; }
.glass-modal.wide .modal-header .meta .sub { font-size: 12px; color: var(--quindi-text-soft); }
.glass-modal.wide .modal-footer { justify-content: flex-end; }

/* Revision navigation arrows in the preview modal header.
   Pattern matches .doc-panel-home / .doc-panel-close: 28×28 circular hit
   target, transparent border that swaps colour on hover, SVG centred via
   absolute + translate. Disabled state dims the icon and removes hover
   feedback so users see the boundary clearly. The two arrows live inside
   a `.rev-nav-group` flex wrapper so they read as a single nav widget
   (4 px gap) rather than as separate header items spaced apart by the
   modal-header's own 12 px gap. */
.rev-nav-group {
    display: flex;
    align-items: center;
    gap: 4px;
}
.rev-nav-btn {
    position: relative;
    width: 28px;
    height: 28px;
    padding: 0;
    margin: 0;
    appearance: none;
    -webkit-appearance: none;
    border: 2px solid transparent;
    border-radius: 999px;
    background: transparent;
    color: var(--quindi-text);
    cursor: pointer;
    box-sizing: border-box;
    transition: border-color 0.12s ease, color 0.12s ease, opacity 0.12s ease;
    flex-shrink: 0;
}
.rev-nav-btn svg {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
}
.rev-nav-btn:hover:not(:disabled) {
    border-color: var(--accent);
    color: var(--accent);
}
.rev-nav-btn:disabled {
    opacity: 0.35;
    cursor: default;
}
.rev-nav-counter {
    margin-left: 8px;
    font-size: 11px;
    font-weight: 400;
    color: var(--quindi-text-soft);
    font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;
}

@keyframes glass-fade { from { opacity: 0; } to { opacity: 1; } }
@keyframes glass-pop  { from { opacity: 0; transform: translateY(4px) scale(0.98); } to { opacity: 1; transform: translateY(0) scale(1); } }

.glass.topbar-glass {
    border-radius: var(--radius-md);
    padding: 6px;
}