/* ═════════════ Prompt Improver Modal (v2) ═════════════ */

.improve-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.78);
    z-index: 4000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    transition: opacity 0.18s ease-out;
    backdrop-filter: blur(3px);
    -webkit-backdrop-filter: blur(3px);
}

.improve-modal-overlay.open {
    opacity: 1;
}

.improve-modal {
    background: var(--panel);
    border: 1px solid var(--green-dim);
    border-radius: 16px;
    box-shadow: 0 0 80px rgba(var(--green-rgb), 0.18), 0 20px 60px rgba(0, 0, 0, 0.7);
    width: 100%;
    max-width: 640px;
    max-height: 90dvh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transform: scale(0.96);
    transition: transform 0.2s ease-out;
}

.improve-modal-overlay.open .improve-modal {
    transform: scale(1);
}

.improve-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 18px;
    border-bottom: 1px dashed var(--line);
    background: rgba(var(--green-rgb), 0.03);
    flex-shrink: 0;
}

.improve-modal-title {
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--green);
    font-weight: 600;
}

.improve-modal-close {
    background: transparent;
    border: none;
    color: var(--muted);
    font-size: 24px;
    line-height: 1;
    cursor: pointer;
    padding: 4px 10px;
    border-radius: 6px;
    transition: all 0.12s;
}

.improve-modal-close:hover {
    background: rgba(var(--red-rgb), 0.1);
    color: var(--red);
}

.improve-modal-styles {
    display: flex;
    gap: 6px;
    padding: 12px 14px;
    border-bottom: 1px dashed var(--line);
    overflow-x: auto;
    scrollbar-width: thin;
    flex-shrink: 0;
}

.improve-style-btn {
    background: transparent;
    border: 1px solid var(--line);
    color: var(--text);
    padding: 8px 12px;
    border-radius: 10px;
    font-family: inherit;
    font-size: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
    transition: all 0.15s;
    flex-shrink: 0;
}

.improve-style-btn:hover {
    border-color: var(--green-dim);
    background: rgba(var(--green-rgb), 0.05);
}

.improve-style-btn.active {
    border-color: var(--green);
    background: rgba(var(--green-rgb), 0.12);
    color: var(--green);
    box-shadow: 0 0 8px rgba(var(--green-rgb), 0.15);
}

.improve-style-icon {
    font-size: 14px;
}

.improve-style-label {
    font-weight: 600;
}

/* Options row: model picker + context toggle */
.improve-modal-options {
    display: flex;
    gap: 10px;
    padding: 10px 14px;
    border-bottom: 1px dashed var(--line);
    flex-wrap: wrap;
    align-items: center;
    background: rgba(var(--green-rgb), 0.03);
    flex-shrink: 0;
}

.improve-model-btn {
    background: transparent;
    border: 1px solid var(--line);
    color: var(--text);
    padding: 7px 12px;
    border-radius: 8px;
    font-family: inherit;
    font-size: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.15s;
    flex: 1;
    min-width: 0;
    max-width: 320px;
    min-height: 36px;
}

.improve-model-btn:hover {
    border-color: var(--green-dim);
    background: rgba(var(--green-rgb), 0.05);
}

.improve-opt-icon {
    font-size: 14px;
    flex-shrink: 0;
}

.improve-opt-label {
    color: var(--muted);
    flex-shrink: 0;
}

.improve-model-value {
    color: var(--green);
    font-weight: 600;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    min-width: 0;
}

.improve-ctx-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 7px 12px;
    border: 1px solid var(--line);
    border-radius: 8px;
    cursor: pointer;
    font-size: 12px;
    user-select: none;
    transition: all 0.15s;
    min-height: 36px;
    flex-shrink: 0;
}

.improve-ctx-toggle:hover {
    border-color: var(--green-dim);
    background: rgba(var(--green-rgb), 0.05);
}

.improve-ctx-toggle input[type="checkbox"] {
    appearance: none;
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    border: 1px solid var(--line);
    border-radius: 4px;
    background: transparent;
    cursor: pointer;
    position: relative;
    flex-shrink: 0;
    transition: all 0.15s;
}

.improve-ctx-toggle input[type="checkbox"]:checked {
    background: var(--green);
    border-color: var(--green);
}

.improve-ctx-toggle input[type="checkbox"]:checked::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--bg);
    font-size: 12px;
    font-weight: 700;
    line-height: 1;
}

.improve-ctx-toggle:has(input:checked) {
    border-color: var(--green-dim);
    background: rgba(var(--green-rgb), 0.05);
}

.improve-ctx-toggle:has(input:checked) .improve-opt-label {
    color: var(--green);
    font-weight: 600;
}

.improve-modal-body {
    padding: 16px 18px;
    overflow-y: auto;
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.improve-section {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.improve-section-label {
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    color: var(--muted);
    display: flex;
    align-items: center;
    gap: 8px;
}

.improve-style-pill {
    display: inline-block;
    background: rgba(var(--green-rgb), 0.1);
    color: var(--green);
    border: 1px solid var(--green-dim);
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 10px;
    text-transform: none;
    letter-spacing: 0.3px;
}

.improve-text {
    padding: 12px 14px;
    border-radius: 10px;
    background: var(--panel-2);
    border: 1px solid var(--line);
    font-size: 14px;
    line-height: 1.55;
    color: var(--text);
    white-space: pre-wrap;
    word-break: break-word;
    min-height: 60px;
}

.improve-original {
    opacity: 0.8;
    border-style: dashed;
}

.improve-result {
    border-color: var(--green-dim);
    background: rgba(var(--green-rgb), 0.04);
}

.improve-diff mark {
    background: rgba(var(--green-rgb), 0.22);
    color: var(--green);
    padding: 0 2px;
    border-radius: 3px;
    font-weight: 600;
}

.improve-loading {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--muted);
    font-size: 13px;
    padding: 8px 0;
}

.improve-loading .auth-spinner {
    width: 18px;
    height: 18px;
}

.improve-error {
    color: var(--red);
    font-size: 13px;
}

.improve-unchanged {
    color: var(--green-dim);
    font-size: 13px;
    font-style: italic;
}

/* "Why this is better" explanation card — amber-tinted aside shown
 * below the diff in explain mode. */
.improve-explain {
    margin-top: 14px;
    padding: 12px 14px;
    background: linear-gradient(180deg, rgba(var(--amber-rgb), 0.08), rgba(var(--amber-rgb), 0.02));
    border: 1px solid rgba(var(--amber-rgb), 0.3);
    border-radius: 10px;
}

.improve-explain-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 6px;
}

.improve-explain-icon {
    font-size: 14px;
}

.improve-explain-title {
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--amber);
    font-weight: 700;
}

.improve-explain-text {
    font-size: 12.5px;
    line-height: 1.55;
    color: var(--text);
    opacity: 0.88;
    font-style: italic;
}

/* "Suggested persona" card — clickable pill with switch button */
.improve-persona-suggest {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 10px;
    padding: 12px 14px;
    background: linear-gradient(180deg, rgba(var(--green-rgb), 0.08), rgba(var(--green-rgb), 0.02));
    border: 1px solid rgba(var(--green-rgb), 0.3);
    border-radius: 10px;
}

.improve-persona-suggest-icon {
    font-size: 22px;
    line-height: 1;
    flex-shrink: 0;
}

.improve-persona-suggest-body {
    flex: 1;
    min-width: 0;
}

.improve-persona-suggest-title {
    font-size: 12px;
    font-weight: 700;
    color: var(--text);
}

.improve-persona-suggest-desc {
    font-size: 11px;
    color: var(--muted);
    margin-top: 2px;
    line-height: 1.3;
}

.improve-persona-suggest-btn {
    background: var(--green);
    color: var(--bg);
    border: none;
    border-radius: 8px;
    padding: 8px 14px;
    font-family: inherit;
    font-size: 11px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.15s;
    flex-shrink: 0;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.improve-persona-suggest-btn:hover {
    background: var(--green-dim);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(var(--green-rgb), 0.3);
}

.improve-arrow {
    text-align: center;
    color: var(--green-dim);
    font-size: 20px;
    line-height: 1;
    opacity: 0.6;
    margin: 2px 0;
}

.improve-modal-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 18px;
    border-top: 1px dashed var(--line);
    background: rgba(var(--green-rgb), 0.03);
    flex-shrink: 0;
    flex-wrap: wrap;
}

.improve-actions-spacer {
    flex: 1;
}

.improve-btn {
    background: transparent;
    border: 1px solid var(--line);
    color: var(--text);
    padding: 10px 18px;
    border-radius: 10px;
    font-family: inherit;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.15s;
    font-weight: 600;
    min-height: 40px;
}

.improve-btn:hover:not(:disabled) {
    border-color: var(--green-dim);
    background: rgba(var(--green-rgb), 0.05);
}

.improve-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.improve-btn-regen {
    color: var(--amber);
    border-color: rgba(var(--amber-rgb), 0.3);
}

.improve-btn-regen:hover:not(:disabled) {
    background: rgba(var(--amber-rgb), 0.1);
    border-color: var(--amber);
}

.improve-btn-cancel {
    color: var(--muted);
}

.improve-btn-apply {
    background: var(--green);
    color: var(--bg);
    border-color: var(--green);
}

.improve-btn-apply:hover:not(:disabled) {
    background: var(--green-dim);
    box-shadow: 0 0 20px rgba(var(--green-rgb), 0.35);
    transform: translateY(-1px);
}

/* Danger variant — used by "Выключить режим сравнения" in compare picker */
.improve-btn-danger {
    color: var(--red);
    border-color: rgba(var(--red-rgb), 0.35);
    background: rgba(var(--red-rgb), 0.06);
    margin-right: auto; /* Push to left, away from Cancel/Apply */
}

.improve-btn-danger:hover {
    background: rgba(var(--red-rgb), 0.14);
    border-color: rgba(var(--red-rgb), 0.6);
    transform: translateY(-1px);
}

@media (max-width: 560px) {
    .improve-modal {
        max-height: 95dvh;
        border-radius: 14px;
    }
    .improve-modal-title {
        font-size: 12px;
    }
    .improve-modal-options {
        padding: 8px 10px;
        flex-direction: column;
        gap: 6px;
        align-items: stretch;
    }
    .improve-model-btn {
        max-width: 100%;
        width: 100%;
    }
    .improve-ctx-toggle {
        justify-content: flex-start;
    }
    .improve-modal-styles {
        padding: 10px;
    }
    .improve-style-btn {
        padding: 7px 10px;
        font-size: 11px;
    }
    .improve-style-label {
        display: none;
    }
    .improve-style-icon {
        font-size: 16px;
    }
    .improve-modal-body {
        padding: 12px 14px;
    }
    .improve-text {
        font-size: 13px;
        padding: 10px 12px;
    }
    .improve-modal-actions {
        padding: 12px 14px;
    }
    .improve-btn {
        padding: 9px 14px;
        font-size: 12px;
    }
    .improve-btn-regen {
        width: 100%;
        order: 3;
    }
    .improve-actions-spacer {
        display: none;
    }
}

.btn-send:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.btn-send:hover:not(:disabled) {
    box-shadow: 0 0 12px rgba(var(--green-rgb), 0.3);
}

.btn-stop {
    background: var(--red);
    color: var(--bg);
    border: none;
    border-radius: 12px;
    width: 40px;
    height: 40px;
    font-size: 16px;
    cursor: pointer;
    font-family: inherit;
    flex-shrink: 0;
    transition: all 0.2s;
    animation: pulseStop 1.5s infinite;
}

@keyframes pulseStop {
    0%, 100% { box-shadow: 0 0 0 rgba(var(--red-rgb), 0); }
    50% { box-shadow: 0 0 12px rgba(var(--red-rgb), 0.3); }
}

.btn-stop:hover {
    box-shadow: 0 0 12px rgba(var(--red-rgb), 0.3);
}

.btn-load-more {
    background: none;
    border: 1px dashed var(--line);
    color: var(--muted);
    font-family: inherit;
    font-size: 12px;
    padding: 8px;
    cursor: pointer;
    border-radius: 8px;
    width: 100%;
    transition: all 0.15s;
}

.btn-load-more:hover {
    border-color: var(--green-dim);
    color: var(--green);
}

/* ── Scroll to bottom button ── */
.scroll-to-bottom {
    position: absolute;
    bottom: 16px;
    right: 16px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--panel);
    border: 1px solid var(--line);
    color: var(--green);
    font-size: 16px;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 5;
    transition: all 0.2s;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.scroll-to-bottom:hover {
    background: rgba(var(--green-rgb), 0.1);
    border-color: var(--green-dim);
}

.scroll-to-bottom.visible {
    display: flex;
}

/* ── Copy code button ── */
.code-copy-btn {
    position: absolute;
    top: 6px;
    right: 6px;
    background: rgba(var(--green-rgb), 0.1);
    border: 1px solid var(--line);
    color: var(--muted);
    font-family: inherit;
    font-size: 10px;
    padding: 2px 8px;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.15s;
    opacity: 0;
}

.bubble pre:hover .code-copy-btn {
    opacity: 1;
}

.code-copy-btn:hover {
    color: var(--green);
    border-color: var(--green-dim);
}

/* ── Model picker overlay ── */
.model-picker-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.72);
    backdrop-filter: blur(4px);
    /* Must be above .improve-modal-overlay (z 4000) so the model picker
     * opened from inside the Improve-Prompt modal renders on top, not
     * underneath. Also above .vault-modal-overlay (3000). */
    z-index: 4500;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    animation: overlayFadeIn 0.15s ease-out;
}

/* ─── Improve settings panel (collapsible) ─── */
.improve-settings-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    background: rgba(var(--green-rgb), 0.04);
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 6px 12px;
    color: var(--text);
    font-size: 12px;
    cursor: pointer;
    transition: all 0.12s;
}
.improve-settings-btn:hover {
    border-color: var(--green-dim);
    background: rgba(var(--green-rgb), 0.06);
}
.improve-settings-btn.open {
    border-color: var(--green);
    background: rgba(var(--green-rgb), 0.12);
    color: var(--green);
}
.improve-modal-settings {
    padding: 12px 16px 14px;
    border-bottom: 1px dashed var(--line);
    background: rgba(var(--green-rgb), 0.025);
    animation: overlayFadeIn 0.15s ease-out;
}
.improve-modal-settings[hidden] { display: none; }
.improve-settings-title {
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--muted);
    margin-bottom: 8px;
}
.improve-setting-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 7px 8px;
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.1s;
}
.improve-setting-item:hover {
    background: rgba(var(--green-rgb), 0.05);
}
.improve-setting-item input[type="checkbox"] {
    margin-top: 2px;
    flex-shrink: 0;
}
.improve-setting-body {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}
.improve-setting-name {
    font-size: 13px;
    color: var(--text);
    font-weight: 500;
}
.improve-setting-hint {
    font-size: 11px;
    color: var(--muted);
    line-height: 1.35;
}

/* ─── Improve cost/balance footer ─── */
.improve-modal-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-top: 1px dashed var(--line);
    background: var(--panel-2);
    font-size: 11px;
    color: var(--muted);
    font-family: var(--mono, monospace);
    flex-shrink: 0;
}
.improve-meta-cost {
    color: var(--text);
}
.improve-meta-cost.improve-meta-free {
    color: var(--green-dim);
}
.improve-meta-balance {
    color: var(--text);
    margin-left: auto;
}
.improve-meta-sep {
    opacity: 0.4;
}