/* ============================================================================
   twin.css — Phase R4 — Twin Memory pane (red color identity).

   The Twin is the user's persistent memory across the AI surface. Red is the
   warm ember at the start of the rainbow — the seed of identity, the thing
   the AI carries forward across sessions. Liquid glass + warm-red accent +
   spherical-harmonic ripples already in avatar.css. Container queries adapt
   the layout from 320px phones to 1280px+ desktops.

   All selectors use the .t- prefix on a .page-twin.twin-stage scope so this
   file does not collide with the legacy .twin-* rules in app.css.
   ========================================================================= */

.page-twin.twin-stage {
    --t-red:        #ff6b58;
    --t-red-soft:   rgba(255, 107, 88, 0.18);
    --t-red-edge:   rgba(255, 107, 88, 0.42);
    --t-glass:      rgba(28, 18, 22, 0.62);
    --t-glass-strong: rgba(36, 22, 26, 0.82);
    --t-text:       #fff0ec;
    --t-text-soft:  rgba(255, 240, 236, 0.65);
    --t-text-faint: rgba(255, 240, 236, 0.40);

    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 0;
    min-height: calc(100dvh - 132px);
    color: var(--t-text);
    container-type: inline-size;
    background:
        radial-gradient(ellipse at 50% 12%,
            rgba(255, 107, 88, 0.18) 0%,
            rgba(255, 107, 88, 0.08) 24%,
            rgba(0, 0, 0, 0)         60%);
}

/* ── Topbar ────────────────────────────────────────────────────────────── */

.page-twin .t-topbar {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 14px 14px 12px;
    background: var(--t-glass);
    backdrop-filter: blur(18px) saturate(120%);
    -webkit-backdrop-filter: blur(18px) saturate(120%);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 14px;
}

.page-twin .t-title-block { flex: 1; min-width: 0; }
.page-twin .t-title {
    margin: 0;
    font-size: 17px;
    font-weight: 700;
    color: var(--t-text);
    letter-spacing: 0.01em;
}
.page-twin .t-sub {
    margin: 4px 0 0;
    font-size: 13px;
    color: var(--t-text-soft);
    line-height: 1.45;
}

.page-twin .t-topbar-right {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 8px;
    flex-shrink: 0;
}

.page-twin .t-avatar-host {
    display: inline-block;
    line-height: 0;
}

.page-twin .t-stats {
    font-size: 11px;
    font-weight: 600;
    color: var(--t-text-faint);
    letter-spacing: 0.04em;
    text-transform: lowercase;
    padding: 4px 10px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    white-space: nowrap;
    transition: color 200ms ease, border-color 200ms ease, background 200ms ease;
}
.page-twin .t-stats[data-tone="ok"] {
    color: var(--t-red);
    border-color: var(--t-red-edge);
    background: var(--t-red-soft);
}

/* ── Compose card ──────────────────────────────────────────────────────── */

.page-twin .t-compose {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 14px;
    background: var(--t-glass-strong);
    backdrop-filter: blur(20px) saturate(125%);
    -webkit-backdrop-filter: blur(20px) saturate(125%);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 18px;
}

.page-twin .t-input,
.page-twin .t-textarea {
    width: 100%;
    background: rgba(8, 6, 8, 0.60);
    border: 1px solid rgba(255, 255, 255, 0.10);
    color: var(--t-text);
    border-radius: 12px;
    padding: 12px 14px;
    font: inherit;
    font-size: 14px;
    line-height: 1.45;
    outline: none;
    transition: border-color 160ms ease, background 160ms ease;
    box-sizing: border-box;
}
.page-twin .t-input:focus,
.page-twin .t-textarea:focus {
    border-color: var(--t-red-edge);
    background: rgba(8, 6, 8, 0.78);
}
.page-twin .t-input::placeholder,
.page-twin .t-textarea::placeholder { color: var(--t-text-faint); }
.page-twin .t-input  { font-size: 13px; }
.page-twin .t-textarea {
    resize: vertical;
    min-height: 64px;
    max-height: 220px;
}

.page-twin .t-compose-row {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.page-twin .t-save {
    font: inherit;
    font-size: 14px;
    font-weight: 700;
    padding: 10px 18px;
    background: var(--t-red);
    border: 1px solid var(--t-red);
    border-radius: 12px;
    color: #1d0904;
    cursor: pointer;
    transition: transform 100ms ease, opacity 160ms ease, box-shadow 160ms ease;
    box-shadow: 0 4px 14px rgba(255, 107, 88, 0.32);
}
.page-twin .t-save:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 8px 22px rgba(255, 107, 88, 0.44);
}
.page-twin .t-save:active:not(:disabled) { transform: translateY(0); }
.page-twin .t-save:disabled { opacity: 0.42; cursor: not-allowed; box-shadow: none; }

.page-twin .t-iconbtn {
    font: inherit;
    font-size: 13px;
    font-weight: 600;
    padding: 8px 14px;
    border-radius: 999px;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.14);
    color: var(--t-text-soft);
    cursor: pointer;
    transition: background 160ms ease, border-color 160ms ease, color 160ms ease;
}
.page-twin .t-iconbtn:hover { background: var(--t-red-soft); border-color: var(--t-red-edge); color: var(--t-text); }
.page-twin .t-iconbtn:focus-visible { outline: 2px solid var(--t-red-edge); outline-offset: 2px; }
.page-twin .t-iconbtn:disabled { opacity: 0.42; cursor: not-allowed; }

.page-twin .t-toggle {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-left: auto;
    cursor: pointer;
    font-size: 12px;
    color: var(--t-text-soft);
}
.page-twin .t-toggle input[type="checkbox"] {
    width: 14px; height: 14px;
    accent-color: var(--t-red);
    cursor: pointer;
}

.page-twin .t-hint {
    font-size: 12px;
    color: var(--t-text-soft);
    padding: 8px 12px;
    border-radius: 10px;
    background: var(--t-red-soft);
    border: 1px solid var(--t-red-edge);
}

/* ── Memory list ───────────────────────────────────────────────────────── */

.page-twin .t-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 4px 0 16px;
}

.page-twin .t-entry {
    background: var(--t-glass);
    backdrop-filter: blur(14px) saturate(115%);
    -webkit-backdrop-filter: blur(14px) saturate(115%);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 16px;
    padding: 12px 14px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    transition: border-color 160ms ease, transform 160ms ease;
}
.page-twin .t-entry:hover {
    border-color: var(--t-red-edge);
    transform: translateY(-1px);
}
.page-twin .t-entry.corrupt {
    background: rgba(255, 180, 90, 0.06);
    border-color: rgba(255, 180, 90, 0.32);
}
.page-twin .t-entry-head {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 11px;
}
.page-twin .t-entry-type {
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-weight: 700;
    color: var(--t-red);
    background: var(--t-red-soft);
    padding: 2px 8px;
    border-radius: 999px;
}
.page-twin .t-entry-label {
    color: var(--t-text);
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-weight: 600;
}
.page-twin .t-entry-ts {
    color: var(--t-text-faint);
    font-size: 10.5px;
    white-space: nowrap;
}
.page-twin .t-entry-del {
    font: inherit;
    font-size: 14px;
    line-height: 1;
    width: 28px; height: 28px;
    border-radius: 50%;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.14);
    color: var(--t-text-soft);
    cursor: pointer;
    transition: background 160ms ease, border-color 160ms ease, color 160ms ease;
}
.page-twin .t-entry-del:hover {
    background: rgba(255, 90, 120, 0.10);
    border-color: rgba(255, 90, 120, 0.42);
    color: #ff5a78;
}
.page-twin .t-entry-body {
    font-size: 13.5px;
    color: var(--t-text);
    line-height: 1.5;
    white-space: pre-wrap;
    word-wrap: break-word;
    overflow-wrap: anywhere;
}

/* ── Empty state ───────────────────────────────────────────────────────── */

.page-twin .t-empty {
    padding: 32px 24px;
    text-align: center;
    color: var(--t-text-soft);
    font-size: 13.5px;
    line-height: 1.55;
    border: 1px dashed rgba(255, 107, 88, 0.32);
    border-radius: 18px;
    background: rgba(255, 107, 88, 0.04);
    margin: 4px 0 16px;
}
.page-twin .t-empty-glyph {
    font-size: 36px;
    color: var(--t-red);
    margin-bottom: 8px;
    line-height: 1;
}

/* ── Container queries ─────────────────────────────────────────────────── */

@container (min-width: 720px) {
    .page-twin .t-topbar { padding: 18px 20px; gap: 16px; }
    .page-twin .t-title { font-size: 19px; }
    .page-twin .t-sub { font-size: 14px; max-width: 60ch; }
    .page-twin .t-compose { padding: 18px; }
    .page-twin .t-textarea { font-size: 15px; }
}

@container (min-width: 1024px) {
    .page-twin.twin-stage {
        gap: 16px;
    }
    .page-twin .t-entry { padding: 14px 18px; }
    .page-twin .t-entry-body { font-size: 14.5px; }
}

/* ── Reduced motion ────────────────────────────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
    .page-twin .t-entry,
    .page-twin .t-iconbtn,
    .page-twin .t-save,
    .page-twin .t-stats {
        transition: none !important;
    }
    .page-twin .t-entry:hover,
    .page-twin .t-save:hover { transform: none !important; }
}