/* ============================================
   Feedback FAB — Floating Action Button + Popup + Form
   ============================================
   
   FAB в правом нижнем углу экрана карты.
   По клику открывает попап с выбором действия,
   затем форму обратной связи.
   
   States:
   - .feedback-fab (default) — видимая кнопка
   - .feedback-fab.dimmed — приглушена (правая панель открыта)
   - .feedback-fab.hidden — скрыта
   - .feedback-popup.open — попап выбора действия
   - .feedback-form.open — форма обратной связи
   ============================================ */

/* ==========================================
   1. FAB BUTTON
   ========================================== */

.feedback-fab {
    position: fixed;
    bottom: 12px;
    right: 20px;
    width: 64px;
    height: 64px;
    border-radius: var(--radius-full);
    background: var(--surface-3);
    border: 1px solid var(--border-default);
    box-shadow: var(--shadow-lg);
    color: var(--text-secondary);
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: var(--z-fab);
    transition:
        opacity var(--transition-normal),
        transform var(--transition-normal),
        background var(--transition-fast),
        box-shadow var(--transition-fast);
    -webkit-tap-highlight-color: transparent;
    user-select: none;
}

.feedback-fab:hover {
    background: var(--surface-elevated);
    color: var(--text-primary);
    box-shadow: var(--shadow-xl);
    transform: scale(1.05);
}

.feedback-fab:active {
    transform: scale(0.95);
}

/* SVG icon inside FAB */
.feedback-fab svg {
    width: 25px;
    height: 25px;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
}

/* Dimmed state — when right panel is open */
.feedback-fab.dimmed {
    opacity: 0.25;
    pointer-events: none;
    transform: scale(0.9);
}

/* Hidden state */
.feedback-fab.hidden {
    opacity: 0;
    pointer-events: none;
    transform: scale(0.8);
}

/* Active state — popup is open */
.feedback-fab.active {
    background: var(--accent);
    color: var(--accent-contrast);
    border-color: var(--accent);
    box-shadow: var(--shadow-accent);
}

.feedback-fab.active:hover {
    background: var(--accent-hover);
}

/* ==========================================
   2. OVERLAY (click-away)
   ========================================== */

.feedback-overlay {
    position: fixed;
    inset: 0;
    z-index: calc(var(--z-fab) + 1);
    background: transparent;
    display: none;
}

.feedback-overlay.open {
    display: block;
}

/* ==========================================
   3. POPUP — Choice Menu
   ========================================== */

.feedback-popup {
    position: fixed;
    bottom: 84px;
    right: 20px;
    width: 240px;
    background: var(--surface-elevated);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    z-index: calc(var(--z-fab) + 2);
    padding: var(--space-2);
    opacity: 0;
    transform: translateY(8px) scale(0.95);
    transform-origin: bottom right;
    pointer-events: none;
    transition:
        opacity var(--transition-normal),
        transform var(--transition-normal);
}

.feedback-popup.open {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: auto;
}

.feedback-popup-title {
    font-size: var(--text-sm);
    color: var(--text-muted);
    padding: var(--space-2) var(--space-3) var(--space-1);
    font-weight: var(--font-medium);
    letter-spacing: var(--tracking-wide);
    text-transform: uppercase;
}

.feedback-popup-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    width: 100%;
    padding: var(--space-3);
    border: none;
    background: transparent;
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: var(--text-base);
    font-family: var(--font-family);
    cursor: pointer;
    transition: background var(--transition-fast);
    text-align: left;
}

.feedback-popup-item:hover {
    background: var(--surface-hover);
}

.feedback-popup-item:active {
    background: var(--surface-active);
}

.feedback-popup-item-icon {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    flex-shrink: 0;
}

.feedback-popup-item-icon.bug {
    background: var(--color-danger-muted);
    color: var(--color-danger);
}

.feedback-popup-item-icon.review {
    background: var(--accent-muted);
    color: var(--accent);
}

.feedback-popup-item-icon.question {
    background: var(--color-info-muted);
    color: var(--color-info);
}

.feedback-popup-item-text {
    font-size: var(--text-base);
    line-height: var(--leading-tight);
}

/* ==========================================
   4. FORM — Feedback Form
   ========================================== */

.feedback-form {
    position: fixed;
    bottom: 84px;
    right: 20px;
    width: 320px;
    max-width: calc(100vw - 32px);
    background: var(--surface-elevated);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    z-index: calc(var(--z-fab) + 2);
    padding: var(--space-5);
    opacity: 0;
    transform: translateY(8px) scale(0.95);
    transform-origin: bottom right;
    pointer-events: none;
    transition:
        opacity var(--transition-normal),
        transform var(--transition-normal);
}

.feedback-form.open {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: auto;
}

.feedback-form-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-4);
}

.feedback-form-title {
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
}

.feedback-form-close {
    width: 28px;
    height: 28px;
    border-radius: var(--radius-full);
    border: none;
    background: var(--surface-hover);
    color: var(--text-secondary);
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast);
}

.feedback-form-close:hover {
    background: var(--surface-active);
    color: var(--text-primary);
}

/* Type badge */
.feedback-form-type {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-pill);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    margin-bottom: var(--space-3);
}

.feedback-form-type.bug {
    background: var(--color-danger-muted);
    color: var(--color-danger);
}

.feedback-form-type.review {
    background: var(--accent-muted);
    color: var(--accent);
}

.feedback-form-type.question {
    background: var(--color-info-muted);
    color: var(--color-info);
}

/* Textarea */
.feedback-form-textarea {
    width: 100%;
    min-height: 100px;
    max-height: 200px;
    padding: var(--space-3);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    background: var(--input-bg);
    color: var(--input-text);
    font-size: var(--text-base);
    font-family: var(--font-family);
    line-height: var(--leading-normal);
    resize: vertical;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.feedback-form-textarea::placeholder {
    color: var(--input-placeholder);
}

.feedback-form-textarea:focus {
    outline: none;
    border-color: var(--input-border-focus);
    box-shadow: 0 0 0 2px var(--accent-muted);
}

/* Contact checkbox */
.feedback-contact-toggle {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-top: var(--space-3);
    cursor: pointer;
    user-select: none;
}

.feedback-contact-toggle input[type="checkbox"] {
    appearance: none;
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    border: 1.5px solid var(--border-strong);
    border-radius: var(--radius-xs);
    background: var(--surface-3);
    cursor: pointer;
    position: relative;
    flex-shrink: 0;
    transition: background var(--transition-fast), border-color var(--transition-fast);
}

.feedback-contact-toggle input[type="checkbox"]:checked {
    background: var(--accent);
    border-color: var(--accent);
}

.feedback-contact-toggle input[type="checkbox"]:checked::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 5px;
    width: 5px;
    height: 9px;
    border: solid var(--accent-contrast);
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.feedback-contact-label {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    line-height: var(--leading-snug);
}

/* Contact input (appears when checkbox is checked) */
.feedback-contact-field {
    margin-top: var(--space-2);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition:
        max-height 0.2s var(--ease-default),
        opacity 0.2s var(--ease-default),
        margin-top 0.2s var(--ease-default);
}

.feedback-contact-field.visible {
    max-height: 80px;
    opacity: 1;
    margin-top: var(--space-3);
}

.feedback-contact-input {
    width: 100%;
    padding: var(--space-2) var(--space-3);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    background: var(--input-bg);
    color: var(--input-text);
    font-size: var(--text-base);
    font-family: var(--font-family);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.feedback-contact-input::placeholder {
    color: var(--input-placeholder);
}

.feedback-contact-input:focus {
    outline: none;
    border-color: var(--input-border-focus);
    box-shadow: 0 0 0 2px var(--accent-muted);
}

.feedback-contact-hint {
    font-size: var(--text-xs);
    color: var(--text-muted);
    margin-top: var(--space-1);
    line-height: var(--leading-normal);
}

/* Submit button */
.feedback-form-submit {
    width: 100%;
    margin-top: var(--space-4);
    padding: var(--space-3) var(--space-4);
    border: none;
    border-radius: var(--radius-md);
    background: var(--accent);
    color: var(--accent-contrast);
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    font-family: var(--font-family);
    cursor: pointer;
    transition: background var(--transition-fast), box-shadow var(--transition-fast), opacity var(--transition-fast);
}

.feedback-form-submit:hover:not(:disabled) {
    background: var(--accent-hover);
    box-shadow: var(--shadow-accent);
}

.feedback-form-submit:active:not(:disabled) {
    background: var(--accent-active);
}

.feedback-form-submit:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ==========================================
   5. TOAST — Success Notification
   ========================================== */

.feedback-toast {
    position: fixed;
    bottom: 84px;
    right: 20px;
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-5);
    background: var(--surface-elevated);
    border: 1px solid var(--color-success-muted);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    z-index: calc(var(--z-fab) + 2);
    opacity: 0;
    transform: translateY(8px);
    pointer-events: none;
    transition:
        opacity var(--transition-slow),
        transform var(--transition-slow);
}

.feedback-toast.visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.feedback-toast-icon {
    width: 28px;
    height: 28px;
    border-radius: var(--radius-full);
    background: var(--color-success-muted);
    color: var(--color-success);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    flex-shrink: 0;
}

.feedback-toast-text {
    font-size: var(--text-base);
    font-weight: var(--font-medium);
    color: var(--text-primary);
}

/* ==========================================
   6. RESPONSIVE — Mobile
   ========================================== */

@media (max-width: 767px) {
    .feedback-fab {
        bottom: 70px;
        right: 12px;
        width: 44px;
        height: 44px;
    }

    .feedback-fab svg {
        width: 20px;
        height: 20px;
    }

    .feedback-popup {
        bottom: 122px;
        right: 12px;
        width: 220px;
    }

    .feedback-form {
        bottom: 122px;
        right: 12px;
        width: calc(100vw - 24px);
        max-width: 320px;
    }

    .feedback-toast {
        bottom: 122px;
        right: 12px;
    }
}