/* ============================================================
   Review Board — Components
   Modal, toast, buttons, inputs, context menu
   ============================================================ */

/* ---- Modal Overlay ---- */
.rb-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--rb-z-modal);
    opacity: 0;
    animation: rb-fade-in 0.15s ease forwards;
}

.rb-modal-overlay.closing {
    animation: rb-fade-out 0.12s ease forwards;
}

@keyframes rb-fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes rb-fade-out {
    from { opacity: 1; }
    to { opacity: 0; }
}

/* ---- Modal Box ---- */
.rb-modal {
    background: var(--rb-bg-elevated);
    border: 1px solid var(--rb-border);
    border-radius: var(--rb-radius-lg);
    box-shadow: var(--rb-shadow-lg);
    min-width: 360px;
    max-width: 520px;
    width: 100%;
    transform: scale(0.95);
    animation: rb-modal-in 0.15s ease forwards;
    overflow: hidden;
}

.rb-modal-overlay.closing .rb-modal {
    animation: rb-modal-out 0.12s ease forwards;
}

@keyframes rb-modal-in {
    from { transform: scale(0.95); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

@keyframes rb-modal-out {
    from { transform: scale(1); opacity: 1; }
    to { transform: scale(0.95); opacity: 0; }
}

.rb-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px 0;
}

.rb-modal-header h2 {
    font-size: var(--rb-font-size-lg);
    font-weight: 600;
    color: var(--rb-text-primary);
}

.rb-modal-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border: none;
    background: transparent;
    color: var(--rb-text-muted);
    cursor: pointer;
    border-radius: var(--rb-radius-sm);
    font-size: 18px;
    transition: background var(--rb-transition), color var(--rb-transition);
}

.rb-modal-close:hover {
    background: var(--rb-bg-hover);
    color: var(--rb-text-primary);
}

.rb-modal-body {
    padding: 20px 24px;
}

.rb-modal-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
    padding: 0 24px 20px;
}

/* ---- Buttons ---- */
.rb-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 16px;
    border: 1px solid var(--rb-border);
    background: var(--rb-bg-elevated);
    color: var(--rb-text-primary);
    font-family: var(--rb-font);
    font-size: var(--rb-font-size-sm);
    font-weight: 500;
    border-radius: var(--rb-radius-sm);
    cursor: pointer;
    transition: background var(--rb-transition), border-color var(--rb-transition), color var(--rb-transition);
    white-space: nowrap;
    user-select: none;
}

.rb-btn:hover {
    background: var(--rb-bg-hover);
    border-color: var(--rb-text-muted);
}

.rb-btn:active {
    transform: scale(0.97);
}

.rb-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

.rb-btn-primary {
    background: var(--rb-accent);
    border-color: var(--rb-accent);
    color: #fff;
}

.rb-btn-primary:hover {
    background: var(--rb-accent-hover);
    border-color: var(--rb-accent-hover);
}

.rb-btn-danger {
    background: transparent;
    border-color: var(--rb-error);
    color: var(--rb-error);
}

.rb-btn-danger:hover {
    background: rgba(231, 76, 60, 0.15);
}

.rb-btn-ghost {
    background: transparent;
    border-color: transparent;
    color: var(--rb-text-secondary);
}

.rb-btn-ghost:hover {
    background: var(--rb-bg-hover);
    color: var(--rb-text-primary);
}

.rb-btn-sm {
    padding: 4px 10px;
    font-size: var(--rb-font-size-xs);
}

.rb-btn-lg {
    padding: 12px 24px;
    font-size: var(--rb-font-size-md);
}

/* ---- Inputs ---- */
.rb-input {
    width: 100%;
    padding: 10px 14px;
    background: var(--rb-bg-surface);
    border: 1px solid var(--rb-border);
    border-radius: var(--rb-radius-sm);
    color: var(--rb-text-primary);
    font-family: var(--rb-font);
    font-size: var(--rb-font-size-md);
    outline: none;
    transition: border-color var(--rb-transition);
}

.rb-input:focus {
    border-color: var(--rb-accent);
}

.rb-input::placeholder {
    color: var(--rb-text-muted);
}

.rb-textarea {
    width: 100%;
    padding: 10px 14px;
    background: var(--rb-bg-surface);
    border: 1px solid var(--rb-border);
    border-radius: var(--rb-radius-sm);
    color: var(--rb-text-primary);
    font-family: var(--rb-font);
    font-size: var(--rb-font-size-md);
    outline: none;
    resize: vertical;
    min-height: 80px;
    transition: border-color var(--rb-transition);
}

.rb-textarea:focus {
    border-color: var(--rb-accent);
}

.rb-textarea::placeholder {
    color: var(--rb-text-muted);
}

.rb-form-group {
    margin-bottom: 16px;
}

.rb-form-group:last-child {
    margin-bottom: 0;
}

.rb-label {
    display: block;
    font-size: var(--rb-font-size-sm);
    color: var(--rb-text-secondary);
    margin-bottom: 6px;
    font-weight: 500;
}

/* ---- Toast Notifications ---- */
#toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    display: flex;
    flex-direction: column-reverse;
    gap: 8px;
    z-index: var(--rb-z-toast);
    pointer-events: none;
}

.rb-toast {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 18px;
    background: var(--rb-bg-elevated);
    border: 1px solid var(--rb-border);
    border-radius: var(--rb-radius-sm);
    box-shadow: var(--rb-shadow-md);
    font-size: var(--rb-font-size-sm);
    color: var(--rb-text-primary);
    pointer-events: auto;
    animation: rb-toast-in 0.2s ease forwards;
    max-width: 400px;
}

.rb-toast.removing {
    animation: rb-toast-out 0.15s ease forwards;
}

@keyframes rb-toast-in {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes rb-toast-out {
    from { opacity: 1; transform: translateY(0); }
    to { opacity: 0; transform: translateY(10px); }
}

.rb-toast-icon {
    font-size: 16px;
    flex-shrink: 0;
}

.rb-toast.success {
    border-left: 3px solid var(--rb-success);
}

.rb-toast.success .rb-toast-icon {
    color: var(--rb-success);
}

.rb-toast.error {
    border-left: 3px solid var(--rb-error);
}

.rb-toast.error .rb-toast-icon {
    color: var(--rb-error);
}

.rb-toast.info {
    border-left: 3px solid var(--rb-accent);
}

.rb-toast.info .rb-toast-icon {
    color: var(--rb-accent);
}

.rb-toast.warning {
    border-left: 3px solid var(--rb-warning);
}

.rb-toast.warning .rb-toast-icon {
    color: var(--rb-warning);
}

/* ---- Context Menu ---- */
.rb-context-menu {
    position: fixed;
    min-width: 180px;
    background: var(--rb-bg-elevated);
    border: 1px solid var(--rb-border);
    border-radius: var(--rb-radius-sm);
    box-shadow: var(--rb-shadow-lg);
    padding: 4px;
    z-index: var(--rb-z-modal);
    animation: rb-fade-in 0.08s ease;
}

.rb-context-menu-item {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 8px 12px;
    border: none;
    background: transparent;
    color: var(--rb-text-primary);
    font-family: var(--rb-font);
    font-size: var(--rb-font-size-sm);
    cursor: pointer;
    border-radius: 4px;
    text-align: left;
    transition: background var(--rb-transition);
}

.rb-context-menu-item:hover {
    background: var(--rb-bg-hover);
}

.rb-context-menu-item.danger {
    color: var(--rb-error);
}

.rb-context-menu-item.danger:hover {
    background: rgba(231, 76, 60, 0.1);
}

.rb-context-menu-item .shortcut {
    margin-left: auto;
    font-size: var(--rb-font-size-xs);
    font-family: var(--rb-font-mono);
    color: var(--rb-text-muted);
}

.rb-context-divider {
    height: 1px;
    background: var(--rb-border);
    margin: 4px 0;
}

/* ---- Loading Spinner ---- */
.rb-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--rb-border);
    border-top-color: var(--rb-accent);
    border-radius: 50%;
    animation: rb-spin 0.6s linear infinite;
}

@keyframes rb-spin {
    to { transform: rotate(360deg); }
}

.rb-spinner-lg {
    width: 32px;
    height: 32px;
    border-width: 3px;
}

/* ---- Loading Overlay ---- */
.rb-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 12px;
    padding: 40px;
    color: var(--rb-text-secondary);
    font-size: var(--rb-font-size-sm);
}