.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    border: none;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
    color: #fff;
}

    .btn-primary:hover {
        filter: brightness(1.08);
        transform: translateY(-1px);
        box-shadow: 0 4px 14px rgba(0,0,0,0.15);
    }

.btn-secondary {
    background: var(--bg4);
    color: var(--text);
    border: 1px solid var(--border2);
}

    .btn-secondary:hover {
        background: var(--border);
    }

.btn-ghost {
    background: transparent;
    color: var(--text2);
}

    .btn-ghost:hover {
        background: var(--bg3);
        color: var(--text);
    }

.btn-danger {
    background: rgba(239,68,68,0.15);
    color: var(--danger);
    border: 1px solid rgba(239,68,68,0.3);
}

    .btn-danger:hover {
        background: var(--danger);
        color: #fff;
    }

.btn-full {
    width: 100%;
    justify-content: center;
    padding: 11px;
}

.btn-sm {
    padding: 5px 10px;
    font-size: 12px;
}

.icon-btn {
    background: transparent;
    border: none;
    color: var(--text2);
    width: 30px;
    height: 30px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    font-size: 13px;
}

    .icon-btn:hover {
        background: var(--bg4);
        color: var(--text);
    }

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

    .form-group label {
        display: block;
        margin-bottom: 6px;
        font-size: 12px;
        font-weight: 500;
        color: var(--text2);
        text-transform: uppercase;
        letter-spacing: 0.5px;
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
        width: 100%;
        padding: 10px 12px;
        background: var(--bg3);
        border: 1px solid var(--border);
        border-radius: var(--radius-sm);
        color: var(--text);
        font-size: 13px;
        font-family: inherit;
        transition: var(--transition);
        outline: none;
    }

        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            border-color: var(--primary);
            background: var(--bg4);
        }

    .form-group textarea {
        resize: vertical;
    }

    .form-group select {
        cursor: pointer;
    }

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.form-error {
    background: rgba(239,68,68,0.1);
    border: 1px solid rgba(239,68,68,0.3);
    color: var(--danger);
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    margin-bottom: 12px;
}

.form-success {
    background: rgba(34,197,94,0.1);
    border: 1px solid rgba(34,197,94,0.3);
    color: var(--success);
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    margin-bottom: 12px;
}

.required {
    color: var(--danger);
}

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 20px;
    backdrop-filter: blur(4px);
}

.modal {
    background: var(--bg2);
    border: 1px solid var(--border2);
    border-radius: 14px;
    width: 100%;
    max-width: 460px;
    box-shadow: 0 24px 72px rgba(0,0,0,0.16), 0 4px 16px rgba(0,0,0,0.08);
    animation: modalIn 0.2s ease;
}

.modal-lg {
    max-width: 580px;
}

.modal-xl {
    max-width: 860px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
}

.modal-xl .modal-body {
    overflow-y: auto;
    flex: 1;
    min-height: 0;
}

@keyframes modalIn {
    from {
        opacity: 0;
        transform: scale(0.96) translateY(8px);
    }

    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 20px;
    border-bottom: 1px solid var(--border);
}

    .modal-header h3 {
        font-size: 15px;
        font-weight: 600;
    }

.modal-body {
    padding: 20px;
}

.modal-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
    padding: 14px 20px;
    border-top: 1px solid var(--border);
}

.modal-header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.fn-toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(16px);
    background: var(--bg3);
    border: 1px solid var(--border2);
    border-radius: var(--radius-sm);
    padding: 10px 18px;
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: 8px;
    z-index: 99999;
    box-shadow: var(--shadow);
    opacity: 0;
    transition: opacity 0.25s ease, transform 0.25s ease;
    white-space: nowrap;
    max-width: calc(100vw - 40px);
}

    .fn-toast.fn-toast-show {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }

.fn-toast-success {
    border-color: rgba(34,197,94,0.4);
    color: var(--success);
}

.fn-toast-error {
    border-color: rgba(239,68,68,0.4);
    color: var(--danger);
}

.fn-toast-info {
    color: var(--text2);
}

.empty-state {
    text-align: center;
    padding: 48px 24px;
    color: var(--text3);
}

    .empty-state i {
        font-size: 36px;
        margin-bottom: 12px;
        opacity: 0.5;
        display: block;
    }

    .empty-state p {
        font-size: 14px;
    }

    #loading-screen {
        position: fixed;
        inset: 0;
        background: var(--bg);
        display: flex;
        align-items: center;
        justify-content: center;
        z-index: 10000;
    }

    .loading-spinner {
        font-size: 32px;
        color: var(--primary);
        animation: spin 1s linear infinite;
    }

    @keyframes spin {
        from { transform: rotate(0deg); }
        to { transform: rotate(360deg); }
    }

.icon-upload-area {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 24px 16px;
    border: 1.5px dashed var(--border2);
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    min-height: 120px;
}

.icon-upload-area:hover {
    border-color: var(--primary);
    background: color-mix(in srgb, var(--primary) 5%, transparent);
}

.icon-upload-idle {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    color: var(--text3);
    font-size: 13px;
}

.icon-upload-idle i {
    font-size: 28px;
    color: var(--text3);
    margin-bottom: 2px;
}

.icon-upload-hint {
    font-size: 11px;
    color: var(--text3);
    opacity: 0.7;
}

.icon-upload-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text2);
    font-size: 13px;
}

.icon-upload-preview {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.icon-upload-preview-img {
    width: 64px;
    height: 64px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    box-shadow: 0 2px 8px rgba(0,0,0,0.12);
}

.icon-upload-change {
    font-size: 11px;
    color: var(--primary);
    cursor: pointer;
}

@media (max-width: 768px) {
    .form-group input,
    .form-group select,
    .form-group textarea,
    .filter-select {
        font-size: 16px;
    }
}